https://youtu.be/R8I1Hku8GQk

Y/N and B/N both stood in their respective Devil Trigger forms; Y/N had a dark red aura surrounding him, while B/N was surrounded by a dark blue aura. At their side were Pyra and Malos. All four of them were staring at each other as the rain poured on them.

As they glared on; all the others watched this with great intensity.

After a few seconds, which seemed like an eternity, the fours' eyes widened as they zoomed to each other and clashed blades. The twin clash created a small shockwave that echoed throughout the chamber, it cracked a few walls and blew some people back.

Malos: (smirk) Sorry, kid. I can't let the likes of you just claim her power for yourself. This is as far as it goes.

Y/N: Sorry, but I'm gonna have to disagree with you on that!

Both Y/N and B/N flew high to the center of the chamber and towards each other clashing their swords. They clashed at such intense speeds it seemed like sharp blurs, each clash created a small shockwave that echoed within the chamber.

Y/N flew back to the far wall on the right side, landed on his feet and launched to B/N, who mirrored his brother's action on the right wall. As they continued to fly and clash, streaks of red and blue were seen bouncing back and forth throughout the chamber. Pyra and Malos attacked each other, but their sword kept blocking each attack. Everyone watched this with a mix of amazement and shock.

Gray: Whoa! They're moving so fast, I can't even see them!

Gajeel: I can't even pick up their scents at this rate of pace! 

Nia: Give it a rest, Malos! B/N! Can't you see he's just a child?!

Malos blocked a strike from Pyra's sword with his own.

Malos: A child? Don't make me laugh! This kid...

Malos pushes Pyra back, putting space between them.

Malos: Has made himself the Aegis's Driver!

Malos runs towards Pyra at full speed unleashing a barrage of multiple slashes as blocks every strike.

Nia: (shocked) The Aegis's... Driver?

Y/N flew above B/N and brought his black Rebellion down, which B/N blocked with his black Yamato. Y/N forced his brother down to the ground, creating a crater. Y/N gave a fierce roundhouse, knocking B/N to the wall on the other side of the chamber and leaving an impression.

Malos fired from his palm black fireballs at Pyra, who created a barrier to block them. Malos then rushed at her and tired to slash through the barrier, but Pyra cartwheel backwards, before slashing the ground, and sending a wave of fire at him, he leaped in the air and header towards her and once again tried to slash her, but she blocked it her Aegis Sword.

Y/N sent a dark red wave with the sweep of his sword to B/N, who responded by thrusting his own sword forward and sending multiple dark blue bolts of blade energy that sliced through Y/N's wave, creating an explosion. The force was enough to shatter the chains that kept any of the wizards bound, who were now free.

B/N: Your new stature has not changed your failed tactics, brother.

B/N flew to his younger brother. When he was about to slice at Y/N's neck, he quickly ducked and in a swift motion put B/N into a headlock.

Y/N: Let's take this outside!

Y/N flew straight upwards with his brother, and through the ceiling, literally taking the fight outside. Even though technically they were kinda outside.

Both Pyra and Malos were locked in a sword clash, both trying to get one up on the other, all while glaring at each other. While the two Aegis were fighting each other, the group then took the moment to help their fallen comrades.

Ur and Cana quickly ran to Gray and helped up to his; Levy did the same for Gajeel; and so did Aerith, Barett, and Red with Cloud and Tifa. 

Elfman, Freed, Bickslow, and Evergreen came to Lady and Trish, the four wizards removed the rubble that pinned them down and helped them up. While Loke helped Lucy up.

Loke: Lucy, are you okay?

Lucy: I'm fine, but what about Natsu?

Erza and Mirajane were with Happy and Carla, who was with Wendy as they looked down at Natsu. They could see the bleeding, diagonal gash on his chest that B/N left when he cut him. Natsu was barely breathing. 

Mirajane had her mouth covered while Erza just looked shocked; Happy had tears that were about to roll down. Wendy, however; her face was mostly covered by her hair, but look closely enough and one could see tears rolling down her face.

Wendy: (tearing) Natsu... I'm... sorry... I'm sorry...

Mirajane: It wasn't your fault Wendy.

Wendy: (continued to cry) Yes, it was.

Carla: Stop blaming yourself for every little-

Wendy: (crying) I tried to stop B/N, but I couldn't... I couldn't and... Natsu he... he tried to protect me and...

She couldn't finish as she continued to weep.

Happy: (tears were in his eyes) What happened was Natsu's choice. He did what he had to protect you. He always tries to protect the people he cares about, that's who Natsu is.

Gray: Don't worry, he's still alive. (looked down at the Fire Dragon Slayer who was breathing loudly) He ain't gonna die that easy; Natsu's as tough as nails.

Wendy whipped the tears from her face when she saw that he was still breathing. There was still hope for him. Soon, they all heard chuckling from Malos.

Malos: (mocking) Aw... is Grandeeney's little baby gonna cry? Talk about weak.

Pyra: Said the person with a hole in their chest!

Malos glares as he pushes her back.

Malos: (angry) A minor detail! Just the rest of them!

Pyra rushes Malos, but B/N's other blade tries to attack her, but Pyra avoids the attack by doing some backflips.

Sever: Aegis! Over here!

Sever threw his weapon at her, but she managed to dodge it by jumping over it, before launching herself at Sever and sending him back with an overhead slash. She then landed on the ground and as she did she held out her sword.

Pyra: Fire Aegis Flame Nova!

Pyra then rushed toward Sever all while beginning to spin her sword around with flames circling her, striking Sever hard and into a wall. Quickly, she turned around and used a barrier to block a strike from Malos.

Aerith: Incredible...

Ur: She's strong alright.

Raven: But will it be enough?

Red: And what of Natsu?

Gray: Don't worry, he's still alive. (looked down at the Fire Dragon Slayer who was breathing loudly) He ain't gonna die that easy; Natsu's as tough as nails.

Wendy whipped the tears from her face when she saw that he was still breathing. There was still hope for him.

Gajeel: Look, I hate to be the kill-joy, or whatever, here... But what are we gonna do about this "sibling rivalry" going on outside?

Levy: You think Y/N's gonna be okay?

They all looked up to the ruining ceiling.

Lucy: I sure hope so.

Nia and Dromarch who were near a corner watched them with silent faces.

Trish: I don't think he can handle it by himself though.

This earned surprised looks from everyone.

Cana: (angry) Hey, you of all people should know just how strong Y/N is!

Trish: I'm not doubting him! You don't get it; B/N shows no sign of remorse or mercy; of all the times they fought, Y/N has never once won a one-on-one battle with him.

Gray, Freed, Bickslow, and Loke: What?!

Lady: She's right. And even then, B/N's likely to have more experience with his Devil Trigger than Y/N. This battle could go either way, but I think B/N has the advantage here.

Raven: Y/N may have beaten B/N once after they defeated Silas, but ever since then; B/N has gotten a lot stronger than he was before.

All the wizards looked at each other with concern evident on their faces. As they did this Malos sent a dark energy slash at Pyra who leaped into the air to avoid as she landed on the ground.

Lucy: Well, we're not just gonna sit here and do nothing, right? I don't know about you, but I'm gonna help Y/N. He maybe a jackass sometimes, but he's still a member of Fairy Tail! And that's what we do, we help each other out! Now who's with me?!

Loke: (smile and thoughts) That's my girl. (speaking) I'm with you Lucy.

Trish: Count me in too.

Gray: I want a piece of that freak as much as the next guy.

Juvia: My darling needs help and so I shall help him.

Gajeel: (grin) You guys ain't leaving me out of this one.

Freed: If B/N wishes to take arms against this guild, then he shall face the wrath of the Thunder Legion. (his other two comrades nodded in agreement)

Elfman: Then let's go! We gotta man-up and help our friend!

Cana: What he said!

Ur: Same here. He's not getting away that easily.

Mirajane also stood up with a look of determination on her face, as did Erza who could only smile. It was just like this guild, to stand with their friends even if the whole world was against them. But Malos, who once again in another sword clash with Pyra, quickly pushes her back.

Malos: Oh no you don't!

Malos held up his sword and prepared to send a dark energy slashed their way, when a chakram knocked it out of his hand.

Nia: Dromarch!

Dromach: Understood!

Nia quickly jumps onto his back and they charge at Malos, Dromarch fires a sonic blast of his roar at Malos.

Malos: What?!

Malos stops running and he prepares to take the attack, but Sever gets in front of him and puts up a force field to block the attack. Nia and Dromarch head over to the group's side, much to their surprise.

Malos: Get out of the way, Nia! Have you gone mad?!

Nia: You're the one who's off your nut, waling on a group of people who don't deserve this!

Malos: Nia... I don't think you quite comprehend your position.

Nia: I get it, but-

Malos: YOU'RE STARTING TO PISS ME OFF!!!

Pyra: Fire Aegis Blazing End!

Pyra quickly sent her sword engulfed in flames at Malos like a boomerang in a vertical circular motion, forcing Malos to quickly grab his fallen sword and block the attack as the sword crashed against his.

Pyra: Enough! Your fight is with me, Brother!

Pyra runs towards Malos and recalls her sword. She jumps in the air to land a powerful strike, but Malos blocks the attack. While in the air, Pyra uses her momentum to push herself behind Malos.

Malos turns around to attack Pyra, but she avoids the attacks and Pyra counter attacks with multiple fire blasts. Malos counters the blast with his sword; causing fire and smoke to block his field of vision. Pyra moves through the fire to strike Malos with her sword, but Malos blocks with his sword and they get into a clash.

Malos: You're pretty sharp for someone who's only just woken up. Takes me back to 2000 years.

Pyra: (glares at him) Why do you seek the key? You and I both know the door to the Demon World should never be open.

Malos: That's none of your business. You know, there is one thing I've been wondering about. What's the deal with that appearance?

Pyra: ...

Malos: No answer? Fine. Although... I'm guessing your goal is trying to live a life that's happy?

Pyra: Yes, that's the promise me and Y/N made with each other!

Malos: Then I have no choice but to stop you!

Malos emits purple energy in his hand, and he strikes at Pyra, but she jumps out of the way. She lands a good distance away from Malos. 

Pyra: You know there one thing that still hasn't changed about you.

Malos: (raise an eyebrow) And that is?

Pyra: You pick the crappiest Drivers!

Malos growls as he charges at Pyra. But when he got close enough, she pointed her sword at him.

Pyra: Aegis Formchange: Blaster Mode - Cannon!

Quickly, her Aegis Sword glowed red and turned into a flamethrower style cannon. She quickly cocked the barrel.

Pyra: Fire Aegis Flame Salvo!

From her sword new form, an onslaught of fireballs which struck Malos head on. As he yelled in pain, she quickly turned her weapon back to its original form, and held it out in front of her.

Pyra: Fire Aegis Meteoric Slam!

Pyra then gathered fire around and with a force of meteor slammed sword first into Malos, sending them off towards their Drivers.

Tifa: That's some power.

Erza: Alright, then let's go! Wendy, you stay here and help Natsu. Kat, Lady, Happy, and Carla will watch over both of them. Everyone else, let's go help Y/N. 

Nia: Oie! Need a hand? (gestures to Dromarch) Or paws?

Lady: You want to help us?

Kat: But weren't you on their side?

Nia: Hey, I gotta reason for joining up with them. But I didn't think they were gonna kill a kid! I do have standards you know!

Dromarch: My Lady, please don't be so hard on them. 

(looks at them) Do forgive my Lady, she may be a bit rude from time to time, but she means good.

Happy: Hey, it's okay, Mr. Kitty.

Carla: Tom-Cat, that is a tiger-like Blade, not a cat.

Happy: Really? Could've fooled me.

EricHuber9: I think he did.

Erza: We appreciate the help, Nia and Dromarch, right? Could you assist in looking after Wendy as well? 

Nia: Yeah, go after Devil Boy. And mine telling B/N I quit and to shove his sword up his ass for me?

Raven: (look at Nia) Oh, I like you. (to the others) Come on!

With that said, the guild wizards, along with Trish, Rave, Cloud, Aertih, Tifa, Barrett, and Red ran out through the main door, hoping to get outside as fast as they could to help Y/N in his fight against his twisted brother. Once the chamber was empty, Lady gave a slight chuckle.

Lady: Y/N sure picked one heck of a guild to join.

Happy: Aye, that's Fairy Tail for ya.

Carla: (small smile) This guild may be rambunctious at times, but they still value all their comrades, and that is truly something to admire.

Wendy still looked down at the injured Natsu with worry; she felt a hand on her shoulder and turned to Kat who gave her a reassuring smile.

Kat: Don't worry, you're a Dragon Slayer too, right? (Wendy nodded) Then you got this, you can help him. Just have more faith in yourself.

Wendy: (smile) Thanks Kat.

Kat: (patted Wendy's head) Sure thing kid.

Wendy put her hands on Natsu's wound and began to use her healing magic.

(with Y/N and B/N) 

https://youtu.be/gDRsu1FbfIo

As the rain continued to fall, the sky was getting lighter as dawn was approaching as red and blue streaks soared over the castle and the two Devil Trigger Grandsons of Sparda continued their epic battle.

B/N came in with a slash, which Y/N blocked. But B/N vanished, only to reappear behind Y/N, who was just barely able to block his sword strike, the process repeated over and over has B/N kept disappearing and reappearing at super speeds all over Y/N, who was just fast enough to block his sword attacks.

Finally, Y/N had enough, with the next sword strike Y/N kneed B/N in the face and then gave a cartwheel kick to the jaw, sending B/N flying higher into the sky. Y/N flew upward at a faster pace and stopped just above B/N and gave a strong punch across the face to send B/N falling back down towards the castle. When he landed, an entire tower crumbled off and fell.

Y/N then flew towards the dust cloud, but B/N flew out of it before Y/N could make it; he gave an elbow to Y/N's abs as he flew towards him and a powerful round-house which sent Y/N skidding across the entire castle rooftop, but he dug his feet into the ground to stabilize himself.

He flew straight for B/N as his Rebellion glowed a bright red, and B/N's Yamato glowed a bright blue. Both swords clashed and locked. The two brothers glared as they struggled against each other, trying to push the other back, but their strength seemed even.

Y/N: I can do this all day, B/N!

B/N: No you can't. You will give way to fatigue eventually, and even then, I know most of your moves, we spared together when we were at Beacon, remember?

B/N pushed his sword closer to Y/N, but Y/N saw something out of the corner of his eye.

Y/N: Hey, B/N. You know what?

B/N: (cocks a brow) What is it this time?

Y/N: (smirk) Make a wish!

With that Y/N stomped hard on B/N's foot, and pushed him back as he regained his balance. He heard something and saw Pyra still using her attack against Malos coming straight for him. B/N blocked it with Yamato before he helped out Malos.

B/N: Malos, what are you doing letting her beat you up? I don't do lectures, but this is ridiculous.

Malos: Oh shut it! (shoves B/N away) I miscalculated okay?! (turn to Pyra who had landed near Y/N) Well, ain't you a nimble thing!

Pyra: And you're a holey guy.

Y/N failed to contain his laughs and so did Pyra. Y/N then lept towards B/N and gave head-butt and knocked him back.

Y/N: That's a little something new!

Y/N then slammed Rebellion into B/N, sending him soaring through another castle tower and falling to the ground. Y/N flew straight for B/N, but a blue energy wave soared straight for Y/N, who flew just under it but didn't react in time to see B/N's clawed hand grab Y/N's face and slam him into the ground. Y/N tried to get up, but B/N pinned him down with one foot.

B/N: You are strong, but you cannot defeat me, brother.

Y/N: That's just your opinion.

Pyra: Fire Aegis Blaze Kick!

Pyra engulfed one of her legs in flames and with it kicked B/N off Y/N, Malos went in for a slash at Pyra, but Y/N quickly got up and used Rebellion to block it. Soon, Y/N went for a slash, but Malos countered it with one of his own, then the two unleashing a barrage of multiple slashes at each other with each one countering the other.

B/N: Darkness Aegis Void Fist!

Pyra: Fire Aegis Vanishing Fist!

B/N tried to hit Y/N in the back with a darkness coated punch, but Pyra blocked it with a fire one. B/N tried to use his other fist, but Pyra once again blocked it with hers, soon the two began to push against one another, causing cracks to appear on the ground near them. Pyra gave a hard glare at B/N.

Pyra: (glares) Sparda would be so disappointed in you!

B/N: I'm aware of that, you don't remind me, girl.

Pyra: (glares) You desire power to rule the world so much, you abandon your family, a girl who loved you, and remove your humanity.

B/N: You clearly don't understand our family history.

Pyra: I saw Y/N memories, I know about Vergil, and you're right about not being him. You're worse than him!

Meanwhile, Malos launches himself towards Y/N to stab him, but Y/N side steps out of the way and he lands a cut on Malos's face.

Malos: Well... no one's landed a cut on me in a long time.

Malos touches the cut on his face and as soon as he looks at the blood on his fingers, the cut on his face heals.

Y/N: (thoughts, surprised) He can heal his injuries?

Malos: (angry) BUT STILL NOT ENOUGH!!!

Malos, angry, charged at him, striking him with a heavy blow from his fist. Sending Y/N flying before he used his sword to slow and stop him.

Y/N: Gah... How is he so strong? (sees Sever above him)

Sever: You're done!

Sever blasted an X-shaped slash at him, but then Pyra quickly came in just in time to block the blast with a forcefield.

Y/N: (smile) Thanks Pyra!

Pyra: You're welcome! (looks at B/N, Malos and Sever) Now, don't let up!

Y/N: Got it!

Y/N and Pyra run towards B/N, Malos and Sever. Then Sever sends crescent energy waves at Y/N, and Pyra gets in front of Y/N to block it with her force field. When they were close enough, Y/N leaped into the air and gathered fire around him.

Y/N: Fire Aegis Prominence Revolt!

Y/N brought out Rebellion and engulfed it in flames, before diving downwards and slamming Rebellion down to the ground before summoning a large pillar of fire that headed towards them.

Sever: Master! Here! (tossed his weapon to B/N)

B/N: (catches the weapon) I don't think so!

B/N aims the weapon and unleashes a blast of wind which collides with the fire pillar. Which created a large dust cloud. As Y/N looked around for him, B/N quickly appeared out of it and grabbed Y/N's wrist and threw him to the castle wall, which he crashed through. The Devil Trigger B/N approached the Devil Trigger Y/N who had just gotten up.

B/N: If I had to guess, this would be the first time you used this form in combat. (Y/N glared) I have more experience in this form than you do. Even with your Devil Trigger's enhanced abilities, I will always be your better Y/N, and deep down, you know it.

B/N then felt something wrap around his right wrist. He turned around to see his wrist being restrained by Lucy via her whip.

Lucy: Have I mentioned how much I hate that cocky attitude of yours?

Y/N: (shocked) Lucy?!

B/N: Foolish girl, do you think this little toy can hold me?

Lucy: (smirk) It's called a distraction, asshole!

???: Regulas Impact!

B/N was then hit by a golden lion energy beam from Loke that sent him skidding on his feet back a couple feet. Malos then appeared behind Loke, but before he could even attack, he was frozen completely solid.

???: Honestly, you and B/N make the perfect pair. Both of you are edge lords.

The culprit was Raven who had dark red flames around her eyes and had a hand thrusted out.

Y/N: Raven?!

B/N: You...

Raven: (mockling) Ahh, sad I freezed your little partner? Well, too bad. By the way, the Gormotti girl said she quits your group and to do what I said and shove your sword up your ass.

???: That is only a taste of what you are about to receive B/N.

The Blue Demon turned around to a certain armored wizard pointing her sword at him.

B/N: Titania.

Erza: Do not speak my name! It disgusts me to hear it said with your tongue, you despicable coward!

Y/N: Erza?

With Pyra's help, Y/N got up and looked outside.

???: We're not in the habit of putting up with cocky bullies like you, freak.

B/N turned to a small hill nearby where Gray and Ur stood with Juvia on Gray's right and Trish on Ur's left.

Mirajane: As we said before, Y/N is a member of our guild!

Mirajane stood far on B/N's left, in her Satan Soul form, alongside her brother Elfman in his Beast Soul form.

Levy: And when you mess with one of us, you mess with all of us!

Levy stood alongside Gajeel and Cana.

Freed: You thought Fairy Tail is a joke, big mistake.

Freed stood with Bickslow and Evergreen.

Bickslow: And somebody is in for the beating of a lifetime.

Bickslow's Dolls: Yeah! The beating of a lifetime!

Aerith: What's the matter B/N? Didn't expect this?

Aerith stood alongside Cloud, Tifa, Barret, and Red.

B/N found himself surrounded by all the Fairy Tail wizards and the others. Y/N was surprised to see them here. Even after witnessing Vergil's powers first hand, and while he's still in his Devil Trigger form, they are still willing to stand up to him. Y/N has never seen anything quite like this before.

Y/N: (thoughts) Fairy tail... (smile) ...This is some guild.

B/N: Still defiant. You are all stubborn, I will give you that much. But what do you hope to achieve? You cannot defeat me, so why even try?

Raven: (points Omen at him) You right, but Summer said something once, alone you lose, together you win.

B/N: You don't deserve to speak her name, not after what you've done to her.

Y/N: What?

B/N: Oh, he still doesn't know? Well then, if you're not gonna tell him what really happened to mother, I'll do it for you.

Raven: No!

Unknown to everyone, a tiny crack appeared on the ice holding Malos.

Y/N: What do you mean?

B/N: Have you ever wondered, Y/N, how our mother died? How did she disappear from us, the same as our father? Or what her last mission was? None of us didn't know what really happened to her, not even Ozpin, Tai, and Qrow. Unless of course, she and Raven secretly went out while our mother lied and left us, on purpose.

Y/N: (Shocked) What?!?!

B/N: It was during the night, she read to you, Ruby, and Yang a bedtime story when you and your sisters were kids.

(flashback)

Many years ago, a young Ruby and Yang were sleeping on their beds while a young Y/N was on his mother's lap. 

Y/N: Mommy, can you tell me a bedtime story?

Summer: (kiss his head) Of course, my little knight. What do you want to hear? Something new or do you want the usual?

Y/N: Well, I've already heard about the tale of Sparda many times. So, maybe something new?

Summer: Alright then, what do you want to hear about? Maybe you want to hear how I met your dad?

Y/N: (excited) I love that! 

Summer: (giggles) I knew you would say that. Alright, back when me and my team were still at Beacon, it was the start of our second year. Qrow heard about this place that had...... not so healthy drinks. And so one weekend we went there. And after a couple of minutes, (look at Y/N) guess who walked in?

Y/N: Dad? 

Summer: That's right. When I first saw him, I felt my heart skip a beat, from how handsome he looked. (kiss Y/N's forehead) Just like you, my precious baby.

Y/N: So, what do you do together?

Summer: Well, your mother was quite nervous at first, but your uncle decided to do a stupid challenge and then your father got involved.

Y/N: What is it?

Summer: Sweetheart, remember this. Never drink like your Uncle Qrow. You'll likely be able to wake up in a trash can like he did........ (whispers) I don't know how he ended up doing that over 100 times.

Y/N: Okay. 

Summer: Good, now your father managed to beat Qrow, then like a gentleman brought him back over to us. And then he did something silly to your Aunt Raven, who in turn did something funny to him.

Y/N: (tilted his head) Funny?

Summer: Yes, I won't go into all the details, but it ended up with your father being thrown head first into a pinball machine.

Y/N: And what about you? 

Summer: Well, being the caring person I was, I walked over to him to make sure he was alright. And when he looked me in the eyes. I swear that was the moment we fell in love. After Beacon, we bought a house and moved in together, then nine months later. (tickle Y/N's stomach) You came into our lives.

Y/N: (laughs for a moment) Do you think I'll be like you and dad when I grow up?

Summer: Of course, you got our traits inside you. I'm sure even one day, you'll surpassed even your grandfather legacy.

Y/N: (smile and hugs Summer) Thank you! I love you, Mommy!

Summer: (smile and hugs back) I know you do, I love you too, my precious light. Now, time for bed. So you can grow up big and stronger, and give me grandbabies!

Y/N: (tilts his head, confused) Grandbabies?

Summer: Opps, said that last part out loud. Never mind that. Time for bed.

Y/N: Okie dokie.

Summer carries Y/N to the bed and tucks him between Ruby and Yang.

Y/N: Night Mommy. (closes his and goes to sleep)

Summer: (whispers) Sleep tight...... my little ones. I love you... just the way you are. Always...

Summer carefully turned out the lights, and walked out the room. As she closed the door quietly, she gained a sad look on her face. 

After heading downstairs, she looks outside the window at the nighttime forests of Patch. 

Taiyang: (comes from downstairs) It's not like you to rush off on a mission in the middle of the night.

Summer: You know how Ozpin gets. Mystery after mystery.

Taiyang: And when it turns out to be yet another run-of-the-mill patrol, it'll be...

Summer and Taiyang: "I always prefer discretion."

The two share a laugh, before Taiyang looks down frowning. Summer rubs his cheek and comforts him.

Summer: (smile) I'll be back soon.

Taiyang smiled as he grabs her hand and pulls her close and into a hug.

Taiyang: I know.

After gearing up. In the forest of Patch, Summer walks carrying Sundered Rose. Raven jumps and lands on the ground.

Raven: Nobody suspects anything?

Summer: No. They think it's a typical mission.

Raven: (smile) Summer Rose telling lies... first time for everything. (frowns and crosses her arms) And... Uh... What about... You're just going to leave them?

Summer: (glares) You're one to talk.

Raven: It's... You're better at that life, better than I was... better that I could ever be.

Summer walks past Raven, bumping her shoulder into her.

Summer: If I do this right, there's nothing to worry about. Trust me.

Raven: (sigh) Let's get it over with, I guess.

Raven opens a portal with Omen. Summer enters and Raven follows suit, sheathing Omen. The portal disappears, but unknown to them, a young B/N was watching behind the bushes with a shocked and confused expression on his face.

B/N: W-What? What was that? (starts crying) She... she lied. She left us with Raven. (fell to his knees) Why would she do that to us...?

(flashback ended) 

The rain started to slowly died down a bit, as a drop fell on Yamato and slowly sliding down.

B/N: It was only later in my life, that I learned what her mission really was.... To free our father from the Underworld, but (points a claw at Raven) she killed her.

Y/N: (looks at Raven in disbelief) What...?

Raven: I didn't kill her! Summer secretly obtained a device that could boost a semberance and thought with mine, we could create a way out for Dante. (looks down) Losing Dante hurt her so much, she was fully and truly in love with him. (looks at B/N) She would sell her soul to the devil if it meant holding him in her arms again. But......

B/N: She and you were attacked by Salem before you could accomplish your so-called "mission". And during the battle, the device set off an overload and sent our mother to a different realm while you watched helplessly. That is how she died, and it was your fault in the end. 

Once again, unknown to everyone another crack appeared on the ice holding Malos.

Raven: (glares at B/N) It wasn't my fault! I tried everything to find Summer, but I failed.

B/N: Do you see, Y/N? The person you see before you who came to help you, is the person responsible for one of your greatest losses. Our mother was important to us, she took her life for a mission they both screwed up. Now, after hearing the truth, do you truly believe this murderer is still a member of our family?

Y/N: (looks down) .............

B/N: I will ask you this one more time, join me and we could avenge our mother and father. Or die with them.

Y/N: ..........

Raven: (sad) Y/N, you have to believe me, I would never hurt you or even Yang. (looks down) But....... If you want to kill me for it, I won't blame you. (looks at Y/N with a small smile) But before you do, know that while you may not believe or care about it, I always loved you and Yang will with all my heart. And if I could I would take back what happened in a heartbeat. 

A tear drips from Raven's eye as she holds her arm as tears well up in her eyes.

Raven: (tearing) I...I'm sorry...

B/N: It is your choice, but choose wisely, Brother.

Silence set in as the only thing that was heard was the rain itself. The others watched Y/N as he made his choice.

Y/N: You know..... You're right. (looks at B/N) You're nothing like Vergil. You're even worse than he even could be.

B/N: Hm?

Y/N: Mom left us to save our dad, sure she lied to us. And Raven may be the reason why she's gone, but it doesn't change how I feel for them at all. (points at B/N) The only one who doesn't belong in the family is YOU!

B/N: So, that is your answer?

Y/N: Yeah, and I say to you, what Raven said. Go stick your sword up your own ass!

B/N: (sigh) You disappoint me, Y/N. Truely. I thought that telling about our mother would convince us back to being family, but I was wrong. (glares) And now, you and that woman will share the same fate. Malos!

Suddenly, the ice holding shattered in a wave of darkness, sending everyone flying. As Y/N got his bearing, he saw Malos speeding towards him.

Malos: DIE!!!!

*Slash!*

But it wasn't Y/N who he slashed, oh no. It was Raven who pushed him out of the way.

Y/N: (shocked) RAVEN!!!

Malos: Damn woman!

He then with a punch sent her flying through a wall. Y/N quickly files toward Raven as he held her.

Y/N: No. No, no, no, no, no. Why? Why did you do that?! WHY?!?!?!

Raven: (weak chuckle) Why... else.... would I.... do.... it? Because... I love.... you. Listen.... you have to...... (grunt in pain)

Y/N: Don't talk, just save your energy. I'll bring you to Wendy!

Raven: No... I have to tell.... you why I left... all years ago. It was.... because I..... was afraid.

Y/N: (gasp) 

Raven: (grunt in pain) I thought...... we had..... no chance.... Ozpin was..... fighting Salem.... for years.... and wasn't.... making any real.... Progress. So fear began to.... enter in my heart. And so after Yang... was born. I left.... I knew Summer.... could be a better mother.... than I am.

Y/N: Raven...

Raven: But you (put a hand on his cheek) saw through it all...... B/N was wrong to sever his humanity..... Because that's what makes..... you so strong.

Y/N: (starts tearing) I... I'm so sorry... aunt. 

Raven: Cut with the..... waterworks. You're in your Devil.... Trigger form. It makes you look.... So stupid.

Y/N: (wipes his tears) I'm sorry... I'll make up for you, right here and now.

Raven: Good! Now.... you gotta tap deep..... Inside yourself.... unleash the.... power I know you... have.

Y/N stands up and flies back to the group.

Ur: (angry) You son of a bitch!

B/N: She got in the way, pretending to be a hero like my mother. Just like all of you.

Y/N: You have no right to call her that! Not anymore!

Barret: Y/N was right to kick you out of your own family.

B/N: That doesn't matter. I'll ask again, why do you still intent to defeat me?

Lucy: We're doing this for Y/N! 

This surprised the aforementioned half-demon.

Erza: You put him through so much pain and suffering. We will not stand idly by and watch as you attempt to kill your own flesh and blood.

Y/N: (thoughts, surprised) Me...? They're doing this for me?

B/N: (readied his black Yamato) Then I welcome you to attack, and your inevitable failure.

Erza: Enough!

Erza requipped into her Heaven's Wheel Armor.

Erza: Circle Sword!

Erza sends her swords directly at B/N and Malos.

Gray: Ice-Make: Cannon!

Gray created a massive Ice-Cannon and shot a gigantic Ice-ball straight at B/N and Malos.

Ur: Ice-Make: Rose Krone!

Ur creates giant roses and spiked branches made from ice at B/N and Malos.

Juvia: Water Nebula!

Juvia blasted a massive torrent of water towards B/N and Malos as well.

Gajeel: Iron Dragon Roar!

Gajeel unleashed his signature breath attack at the pair.

Levy: Solid Script: Fire!

The word 'Fire' was formed in blue flames before soaring towards B/N and Malos.

Cana: Card Magic: Explosive Flame!

Cana sent a series of flaming cards straight at the pair.

Mirajane: Demon Blast!

Mirajane shot a beam of dark purple energy directly towards B/N and Malos.

Freed: Dark Ecriture: Destruction!

Freed sent a dark energy wave from his sword towards the enemies.

Bickslow: Victory Formation Babies! Let them have it!

Bickslow's dolls shot multiple green energy beams at the Aegis and his Driver.

Evergreen: Fairy Machine Gun: Leprechaun!

Evergreen unleashed a multitude of gold energy projectiles that shot like a gatling gun.

Elfman: Manly Attack!

Elfman threw a massive rock at two blackheart beings; as he did Trish blasted a large streak of blue lightning towards them as well.

Lucy: Let him have it Loke!

Loke: With Pressure!

Loke blasted a large gold beam from his rings.

Aerith: Mega Flare!

Aerith creates a powerful fireball and with her staff hurls it at the duo.

Red: Stardust Ray!

Red howled to the sky and summoned falling balls of light that headed towards the sinister pair.

Cloud: Blade Burst!

Cloud places his sword behind him and then charges it up with magical energy, then he spun the air once and strikes the ground, sending three beams that travel along the ground towards the duo. Barret's gun then fired a barrage of missiles down B/N and Malos.

The attacks came from all around B/N and Malos as they were bearing down on them; while they had yet made an attempt to move and just allowed them to get closer.

B/N: Fools.

B/N's black Yamato glowed a dark blue as quickly he plunged it into the ground and a blue and black explosion erupted, disrupting all the attacks and blowing all the group back with quite a lot of force to say the least.

When the dust settled, all the wizards and Devil Hunters laid on the ground, barely conscious. Trish was among the few to barely stand.

She was grabbed by the hair by the Devil Trigger B/N and then tossed at Lucy. Both blondes rolled a bit before stopping. They looked up in fear as the demon stood above them.

B/N: Pathetic. This was the inevitable outcome of your ignorance.

He was about to bring his blade down and both girls closed their eyes, only to hear a clang sound. They slowly opened them to see something that made their eyes go wide.

Lucy and Trish: Y/N!

Everyone saw the Devil Trigger Y/N block his brother's attack with his own sword.

Y/N: Listen up bro, because I'm only gonna say this once. This is between YOU and ME!

Y/N forced B/N off of him and pointed the tip of his sword at him.

Y/N: LEAVE THEM OUT OF THIS!!!

Y/N blasted a large crimson red beam from his sword, which hit B/N and sent him flying deep into the castle, breaking through many walls in the process.

Then Malos rushed at him and tried to slash him, but Pyra blocked him with her own slash, then grabbed him and using all of her strength to send him flying after his Driver.

Y/N: (looks at Lucy and Trish) You girls okay?

Trish: We're fine. You?

Y/N: I'm not, not until I settle this.

Gray: Then let's go-

Y/N: (raised his right claw) No. This is something I have to do.

Cana: No way! We're coming with you!

Levy: You don't have to do this alone, you know.

Gajeel: We can handle that freak.

Y/N: I said NO!!!

Y/N silenced everyone present, but he calmed down soon after.

Y/N: Guys, look, I appreciate what you're doing, but he's my brother and he's my responsibility. I have to do this, and no offense, but you guys can't fight him when he's like that.

Lucy: But you never beat him one-on-one before.

Y/N: First time for everything. I am going to stop him, but I can't do it if I have to worry about you guys. So just let me handle this.

Pyra: And besides he won't be alone, Malos is with B/N too.

All of them, especially Erza, could see the determination in his yellow demonic eyes. Erza then gave a warm smile.

Erza: (smile) Then we'll have to put our faith in you.

Everyone was somewhat surprised, save for Pyra, Trish and Y/N.

Erza: (smile) If you believe you can handle him, then we will respect your wishes and allow you to handle this.

The Devil Trigger Y/N gave a smile.

Dante: Thanks guys. (spread his wings)

Trish: Hey Y/N! (gained his attention) Don't go dying on us, okay?

He gave her a wink before grabbing Pyra and flying into the castle.

Back in the chamber, Wendy continued to use her magic to heal the injured Natsu; Kat, Lady, Happy, and Carla were kneeling beside him as Nia and Dromarch watched over them. The bleeding had stopped and the large cut was sealed, but it was still visible. Natsu's eyes stirred.

Happy: Hey, I think he's waking up.

They looked to see Natsu's eyes slowly open. He gave his signature grin.

Natsu: Hey guys, what did I miss?

Kat, Lady and Carla gave amused smiles as Happy immediately clung onto him. Wendy's smile was one of relief as he tried to sit up, but he groaned and held his injured chest, Wendy's look became one of worry.

Wendy: Natsu, hold on. You're not fully healed yet.

His mind then clicked and he remembered what B/N just did to him. His face became filled with anger.

Natsu: Where is he?! Where are those two pricks B/N and Malos!? As a matter of fact, where the heck is everyone else?!

Nia: Oie, cool down fireworks!

Happy: Natsu, Y/N showed up. He had this girl who can use fire like you and then he turned into a scary demon too, he, the girl, B/N and Malos went to fight outside and everyone else followed them.

Carla: I suspect those four must be locked into fierce combat at this moment.

Dromarch: Indeed.

Natsu: WHAT?!?! They went to fight and left me here?!

Nia walked over and slapped him in the back of his head.

Nia: Again, cool down! Or else I dump you in a bucket of ice water!

Lady: You were almost killed. Wendy here, just saved your ass!

Natsu then turned to Wendy who looked down in partial shame. He took a breath before speaking.

Natsu: I'm sorry. Thanks Wendy, I owe ya.

Wendy: I'm sorry. It was my fault.

Natsu: What are you talking about?

Wendy: I tried to fight him but... you protected me and... got hurt.

Wendy looked like she was about to cry again but Natsu put a hand on her shoulder.

Natsu: I wasn't gonna let B/N hurt you Wendy. (smile) It's no one's fault, and besides we're all alive, that's a victory in my book. 

That seemed to cheer Wendy up, but something was still on her mind.

Wendy: Natsu... before you fell down, you called me, your sister...

Natsu: Well, yeah. You're like the little sister I never had. (Wendy was surprised a bit) And it's not just we're Dragon Slayers; the Fairy Tail guild is my family, and you're a part of that family too.

Small tears of joy fell from Wendy's eyes as she clung to Natsu and gave him a hug.

Wendy: And you're like the big brother I never had. 

Natsu patted her head. Happy, Carla, and even Nia, Dromarch, Lady and Kat could only smile at that.

Lady: You know, for an impulsive meat-head, you've got a big heart.

Kat: You and Y/N really have a lot in common.

Happy (slowly approached Carla) Isn't this sweet Carla?

Carla: If you are attempting to make a move on me, I will claw your eyes out.

This caused Happy to zip his mouth shut.

The touching moment ended when the entire castle began to shake and pebbles fell from the ceiling. A hole broke in the ceiling and at the far end of the chamber, B/N, still in his Devil Trigger form, fell and landed on the ground, with Malos landing next to him. Malos shook his head and looked at Nia.

​​Malos: You!

Y/N still in his own Devil Trigger form as well flew straight for B/N. The eldest brother gave a swing from his sword, which caught Y/N and flung him against the wall at the furthest end of the chamber. B/N flew straight towards him and the two locked blades while Y/N was still pinned against the wall.

Kat, Lady, Wendy, and Happy: Y/N!

Natsu: (shocked) That's Y/N?!

Carla: Yes, that is his Devil Trigger, when his demonic blood is awakened, he transforms into that, much like his elder brother.

B/N and Y/N continued to lock blades as they struggled, though it seemed B/N had the advantage, and it appeared that neither of them noticed the others in the chamber as of yet.

Natsu: I gotta help, I-

Natsu tried to get up, but his chest-wound ached as he fell to his knees and held his chest.

Happy: Natsu!

Malos: Still alive? You're more hard to kill than a cockroach! (looks at Nia) And for you, backstabbing little rat!

Pyra then came and clashed blades with Malos as Kat and Lady helped Natsu.

Wendy: You haven't recovered yet, you can't fight now!

Natsu: Y/N needs me to back him up. I gotta do something!

Kat: Well what can you do like this?

Natsu: I'm gonna need a lot of fire.

He took a few whiffs of the air and turned to the very center of the chamber where the large, green demonic fire was still blazing. A smile formed on Natsu's face.

Happy: I don't think that's a good idea, Natsu.

Carla: Happy may be right. That fire doesn't smell right.

Lady: That's because it's fire from the Demon World.

Carla: Demon fire?

Lady: Yep.

Natsu: Works for me. Fire is fire, after all.

Kat: Natsu, you have no idea what that could do to you.

Wendy: You're already badly injured, don't make it any worse!

Natsu: I gotta help Y/N! I owe B/N major payback. Not just for beating me, but for hurting all my friends. Somebody needs to knock that bastard off his high horse! If Y/N can't do it alone, then I'll give him a hand.

They all looked and saw the determination in the Salamander's eyes.

Nia: Oie! (walk in front of Natsu) You're crazy, you know that right?! Totally out of your mind!

Lady: Another thing you two have in common, you're both as stubborn as a rock. Alright.

She helped Natsu and draped his right arm over her shoulder; Wendy then scooted under Natsu's left arm and helped as well. They then began to help Natsu over to the green fire with Happy and Carla close behind him. When they got to it, Happy got a look of worry.

Happy: Natsu... are you sure you want to do this?

Natsu gave a mischievous grin as he stuck his head into the green fire. Lady and Wendy both sweat dropped.

Lady: Yeah, I'd say he's sure.

Nia: Still say he's crazy.

Dromarch: He is persistent, my Lady.

Y/N's struggle with B/N continued as he pressed his younger brother deeper into the wall, widening the impression quite a lot.

B/N: Why prolong the inevitable brother? Submit, and your death will be painless.

Y/N: Go to Hell!

B/N: In due time.

As they continued to struggle, Pyra was sent flying into him, causing the two to crash into a wall. Soon Malos walked over to B/N prepare to slash them together when they heard a gurgling sound, the distraction was just enough for Y/N and Pyra to get to a safe distance, but they both looked to the center of the chamber where they saw the green demonic fire shrinking, and with the sound growing louder.

The fire then took the shape of multiple streams, and Y/N, Pyra, Malos, even B/N, looked in surprise to see the fire entering the mouth of a certain Dragon Slayer.

Y/N: Natsu?

B/N: (thoughts) I don't believe this... He's actually eating the fire from the Demon World?

Malos: Ah, crap!

All the fire entered into Natsu's mouth as he gulped it down. His eyes then began to glow green as he let loose a loud yell, which was enough to force Nia, Dromarch, Wendy, Kat, Lady, Happy, and Carla back. 

A green aura formed around Natsu as he yelled. The aura ceased and he slammed into the ground, creating a tremor that sped to the Devil Brothers and their Aegisis, forcing them to split apart even further.

Natsu then coughed up some green liquid and fell to his knees as he held his throat as he was in internal pain.

Wendy and Happy: Oh no, Natsu!

Kat: That's what I was worried about!

Nia: SEE!!! I told you it was a crazy thing to do!

Y/N: Natsu! You moron! That's Demon Fire! It'll poison you!

Natsu continued to gargle in pain and hold his throat.

B/N: (thoughts) His stupidity has no end, did he really believe he can eat fire from the Demon World and regain his power? This will be the end of him.

Natsu's yells in pain became one of fury as his eyes turned orange and the green fire around him turned orange as well. It grew to twice his size and took the shape of a dragon.

Malos: What the?! Bastard!

His body became covered with scales and the fire raged around him, he gave B/N a glare that made a wild wolf look tame.

Pyra, Kat, Lady, Wendy, Happy, and Carla could only look in amazement, while Y/N's demonic face bore one of great surprise, B/N's was that of complete shock and disbelief.

B/N: (shocked) No... By consuming the fire... of the Demon World... he's entered the final stage of his Dragon Slayer Magic...

Pyra and Malos: Dragon Force!

Natsu then soared straight for B/N and gave a strong punch across the jaw and sent him flying through the wall and multiple walls after that. 

Malos: Alright! Time to go down for real this time! Aegis Sword Art: Buster!

Malos headed towards Natsu as he brought up his sword and charged it enough to create a large blade of dark energy and tried to slash him, but Natsu dodge and hit him with a fiery haymaker right in the wound Igneel gave him long ago. Causing him to violently spit out a dark blood-like substance.

Natsu: I don't have time for you, Malos! I've got my rage set up on B/N right now!

Natsu punched Malos which sent him flying toward the ground, making a crater below him as he continued to cough more of the dark blood-like substance, making Pyra's eyes widen in shock.

Natsu then gave a roar as he launched fire from his feet, propelling him like a rocket, after B/N. Y/N's eyes widened in shock too. 

Y/N: (shocked) Wow... that's just... wow.

Pyra: Yes.... Dragon Force is like a storm. Destroying whatever comes in its path.

Wendy: So, that's Dragon Force?

Carla and Happy both silently nodded.

Lady: Yeah... he just decked B/N and Malos. Guess that fire did help.

Y/N: (turned to them) You guys doing okay?

Kat: Yeah, we're doing just fine.

Carla however, wasn't doing so fine as she had been meaning to say something.

Carla: Y/N... about what I said before... when Wendy was kidnapped... I... said some things... I was out of line and...

Y/N: (raised a claw) Forget it, don't worry about it. (turned back to the hole) You guys might wanna get outta here. With him, my bro, and me like, well; this castle's not gonna last long.

Nia: (dodges a falling pillar) I think it already reached its limit. (looks at Y/N and points at him) Oie, listen you owe me big time, Devil Boy!

Y/N: Yeah, yeah, I know. The others are outside too, make sure they get to safe distance, just in case.

Happy: Aye sir!

Happy picked up Lady while Wendy was picked up by Carla and both cats sprouted wings.

Wendy: Hey, Y/N... Kick his butt.

Y/N: That's the plan Wendy.

(with Natsu, B/N, and Malos) 

Sambamhaw: Cue the epic final battle of the B/N Arc music! 

https://youtu.be/YLTIzW2XK3M

(first half at 0:00 to 1:26)

B/N skidded to a halt in a room, only to see the Dragon Force Natsu, surrounded by a flaming aura soar right through him. Before B/N could react, Natsu gave a powerful kick across the chest, sending him flying to the side and through the next wall. Then Malos appeared behind him.

Malos: Stay still, you little bug! Aegis Sword Art: Jail!

Malos once again unleashed dark purple chains at Natsu, but he dodge and gave him an uppercut sending him into a pillar.

Natsu: I told ya to stay out of it!

Natsu came in again, but B/N tried to sweep the blade towards him, but Natsu blocked it with his fiery fist, much to B/N's shock. Natsu's face was right up to B/N's.

Natsu: Fire Dragon Roar!

The breath attack completely engulfed B/Nand blasted him through at least five more rooms before coming to a halt in what appeared to be a large dining room.

Natsu blasted in just as B/N recovered and laid a series of fierce punches, which had quite the effect on B/N in his Devil Trigger form. He was so caught up in surprise that he couldn't react in time for all the attacks to hit him.

Natsu: You tried to kill Y/N!

Natsu jumped high and sent a massive fireball at B/N, blowing him away, and the entire room to pieces.

Natsu: You kidnapped my friends!

B/N recovered in the next room, only to have Natsu give a strong flaming kick to the jaw, sending him straight upwards into two more rooms. Natsu was already waiting for him, pouncing from the roof.

Natsu You made Wendy cry!

Natsu grabbed B/N by his throat in his right hand, and his left arm with his left hand, before lighting fire from his feet and propelling both down through multiple floors.

Natsu: I won't let you get away with any of that! 

Natsu continued to smash B/N through the castle.

Natsu: Fairy Tail's my family! HURT MY FAMILY AND I'LL KILL YOU!!!

B/N: Your idle threats don't scare me, boy!

B/N thrusted Yamato forward, forcing Natsu back. The two fell through the last floor and into a massive, five stories, cave, which held a series of large pillars that were the foundation for the entire castle.

B/N: (flies up) You'll never catch me at your current speed!

But B/N was wrong as Natsu jumped from one pillar to another with fast reflexes before jumping fast enough to B/N and punched him in the gut, causing him to spit blood. Malos came through a wall screaming and grabbed Natsu's arm and threw him into the ground with a crash.

Malos: You little piece of shit! (raise his sword) Just like your dumb father! Always cocky! DIE!!!!

Malos sent a strong and powerful energy wave with his sword, which hit Natsu and sent him to the ground. B/N and Malos landed gracefully, only to see Natsu explode in a series of flames and charge right at them, but B/N thrusted Yamato forward and sent a series of dark blue energy slices towards Natsu, who braced himself for the impact.

However, a red energy wave came down below and hit both B/N and Malos, causing an explosion that sent him through one of the large pillars. Natsu looked to see Y/N and Pyra land next to him.

Y/N: (offered a hand) Need a hand?

The Dragon Force Natsu looked to Y/N before taking it.

Natsu: It looks like we're gonna kick his ass together, huh?

Y/N: I was about to say that.

They heard giggling and looked at Pyra who had a smile on her face.

Y/N: What are you laughing about?

Pyra: (smile) It's just that the two of you remind me so much of Sparda and Igneel.

B/N and Malos emerged from the dust of the pillar and glared at the three that stood before them.

B/N: The three of you make no difference, this castle shall be the burial ground for both of you!

A dark blue and a dark purple aura raged around B/N and Malos as they readied themselves. Y/N's body was surrounded by a raging, dark red aura; as Pyra's body was surrounded with a red fiery aura while Natsu's body was surrounded by a raging, orange, fiery aura.

Y/N: You ready guys?

Pyra: Let's settle this!

Natsu: Hell yeah! I'M ALL FIRED UP NOW!!!

B/N and Malos flew straight forward, while Y/N, Pyra, and Natsu flew straight at him as well. Both parties clashed, resulting in a large explosion.

Outside

The rain had stopped and the clouds were gone to reveal dawn and the sun had now begun to rise, bringing in the light. Carla flew Wendy, while Happy flew Lady, Nia was riding Dromarch and Kat was following them. They all just made it outside.

Nia: Where the bloody hell is everyone?

???: Guys! Over here quickly.

They all looked down.

Wendy: There they are!

Wendy pointed down below to Erza, Trish, Gray, Ur, Gajeel, Lucy, Loke, Juvia, Mirajane, Elfman, Freed, Cana, Levy, Tifa, Cloud, Red, Aerith, Barret, Evergreen, and Bickslow. The cats and the Blade took their passengers and met up with the others.

Lucy: Are you guys alright?

Wendy: Don't worry, we're fine.

Erza: Where's Natsu?

Kat: He's inside with Y/N and Pyra and they're fighting B/N and Malos.

Gray: What?! Is he trying to get killed?!

Wendy: It's not like that!

Lady: She's right, Natsu ate some fire from the Demon World and has entered Dragon Force.

That earned looks of surprise from everyone present, especially Gajeel and Erza.

Gajeel: Dragon Force?

Cloud: Are you certain?

Carla: He grew scales over his body and was surrounded by a raging aura of dragon fire, and his attacks have all increased significantly. If that isn't any indication, I don't know what is

They all looked to the castle, which now began to crumble away and fall apart.

Lucy: Yep, looks like Natsu's handy-work.

Mirajane: Collateral damage is Natsu's talent.

Elfman: That's what makes him a man!

Levy: You think they're going to be okay?

Tifa: They'll be fine. (to Wendy) Wendy, Raven needs your help.

Wendy: Okay, I'm on it! (heads toward Raven)

Juvia: I'm quite certain they can handle this; Natsu's and my darling's combined powers should be sufficient enough to defeat B/N.

Trish: She's right. Since there's nothing we can do, we just gotta hope they're gonna make it out of this.

Though in Trish's head, there was still a bit of worry for Y/N.

(second half 1:26 to 2:43) 

Back inside the castle, the whole room was literally on its last breath, as it was covered in fire, dark blue and red demonic energy, and dark purple energy, as Pyra shot up out the rubble she was buried in and took a look around the room.

Pyra: Huh? (Y/N pops out) Note to self, never do that again.

Y/N: No time for that, we've got a fight to finish!

They turned to Malos, who blows the rubble he and B/N were buried in away with a dark purple wave. He then took a look at Y/N.

Malos: You're just like your grandfather, annoying to the max!

B/N soared at high speeds, and plunged Yamato into the ground, creating a small explosion, which separated Pyra and Y/N. B/N flew straight to Y/Non the left and gave a powerful swing from Yamato, sending him flying to the wall.

B/N then turned and flew to Natsu who had just recovered. He grabbed the Dragon Force Dragon Slayer and threw him far to the other wall on the far side.

Natsu: Come on! (got up) Is that all you got?!

B/N tried to slice at Natsu but he jumped up high and flipped, planting his feet on a falling boulder. He blasted fire from his feet, soaring back down to Vergil.

Natsu: Fire Dragon Iron Fist!

Natsu's attack connected to B/N's face and sent him skidding on the ground.

Natsu: Fire Dragon Brilliant Flame! 

Natsu threw a large fireball, which hit B/N dead on, creating a large explosion, and a crater. Malos appeared behind Natsu and grabbed him by the head and tossed him to the wall. He then grabbed Natsu's right foot and slammed him on the ground.

He readied his sword to stab Natsu, but Pyra came in with a sweep of her Aegis Sword that sent Malos flying through another pillar. Then B/N sped towards her and slashed her sword out of her hand and tried to slash her again. But Y/N threw a rock and stopped it.

Y/N soared straight for B/N, and begun to swing Rebellion relentlessly. B/N was put on the defensive end as all he could do was block the sword attacks. They hovered in the air until Y/N blocked a sword block from B/N and gave a kick to his right knee.

Using this, Y/N sent a powerful red energy wave, blasting B/N back. However, multiple dark blue energy strikes came from the dust and hit Y/N like a series of bullets, sending him to the ceiling.

As B/N continued, a fire-whip wrapped around his arms, and he turned to see Natsu pull on the fire whip, sending B/N l through another pillar. Natsu came forward and gave a strong roundhouse.

Natsu: Fire Dragon Talon!

The hit sent B/N flying through the air. The Devil Trigger Y/N and the Dragon Force Natsu both looked at each other and nodded. Y/N flew straight up with his wings, while a flaming aura around Natsu sprouted fire-dragon wings and he flew up with Y/N.

B/N looked to see Natsu and Y/N's fists connect with his jaw, sending him straight for a massive falling boulder (due to them taking out most, if not all, the pillars of the castle's foundation). The boulder hit B/N and he fell to the ground as it landed on top of him.

Natsu and Y/N both landed and watched as the boulder was sliced in half, and B/N fell to his right knee in exhaustion, using Yamato to support him.

B/N: (disbelief) Impossible... Am I... being... defeated?

Pyra: (appears behind him) Yes! Yes, you are!

He turned to face her, and was given a kick to the face. She went in for a slash with her sword, but was blocked by Malos, who blasted her with a ball of dark purple energy. But Natsu came in with a sledgehammer to the back, and Y/N with a slash of dark red energy.   

Y/N: What's wrong? That all you got?

Natsu: Come on, you can do better than that.

B/N and Malos growled as he stood up and glared at both his opponents.

B/N: I will not lose! I won't accept this! I am the grandson of Sparda! His true successor! I will gain the power I deserve! Sparda may have been a legend! BUT I SHALL BECOME STRONGER!!!

B/N yelled as he now had a mixture of dark blue and purple aura which raged even stronger.

Malos: (grips his sword) Not again! Not again! NOT AGAIN!!!! I WON'T BE BEAT AGAIN, BY SOMEONE WHO HOLDS THE BLOOD OF SPARDA, AND THE SON OF THAT STUPID IGNEEL!!!!

Natsu: (to B/N) WHO DO YOU THINK YOU ARE?!?!

Natsu tore off his shirt, earning a glare from B/N.

Natsu: You're not stronger than Sparda! You couldn't even beat Y/N and me! You may be the guy's grandson, but you're no better than the rest of us! Don't you know blood ties don't matter?! 'Cause everyone in the guild is supposed to be considered family!

B/N: You ignorant little... A weak human like you can never understand my desire for power!

Natsu: You may be a half-demon, but if you think that makes you above everyone else... YOU'RE WRONG!!!

Malos: THAT'S ORIGINAL COMING FROM YOU OF ALL PEOPLE!!! JUST DIE!!!!

Everyone outside looked in surprise as the castle completely crumbled and fell apart; but a large explosion erupted from the top of the rubble, a streak of orange fire, one of red fire, one of red energy, one of dark purple energy, and one of blue energy, all emerged and began to collide with each other.

Nia: (shocked) What is going on in there?! 

Natsu, Pyra, and Y/N both each laid a series of aerial hits on B/N and Malos, each one was powerful enough to create a shockwave. They were hit by Y/N, then back to Natsu, then to Pyra, back to Y/N, then back to Natsu, once more to Pyra and then finally, a double sword slash from Y/N and Pyra sent them flying down to the rubble. Both of them strenuously got up to see Y/N, Pyra, and Natsu both land twenty feet in front of him.

Y/N: It's over B/N! Give it up!

B/N: Never!

B/N held his sword up high and dark blue energy soared straight up, creating a massive beam, which took the shape of a sword. Everyone down below could see this and looked in fear as an attack that strong could level everything in sight.

Natsu: Let's end this Y/N, Pyra.

Y/N: Agreed.

Pyra: (nods) Right!

(final half 2:43 to 4:07) 

Pyra held out her sword in front of her, and Y/N and Natsu gripped it with her. As they did, they began to pour their energies into the blade. As they did, their powers began to mix together and crimson red flames began to circle around Pyra, the Devil Trigger Y/N, and the Dragon Force Natsu.

As the flames circled, B/N's eyes widened as he saw them, and for a brief moment, just above Natsu, Igneel had appeared, and even Sparda appeared behind Y/N.

B/N: Igneel and Sparda?!

Lady: What the hell is that?!

Trish: Their powers... they're combining...

Freed: It couldn't be...

Erza: It's a Unison Raid!

Malos: (growls) Damn you! (held out his sword) Aegis Slayer Secret Art: Endless Abyss - Calamity End!!!

Malos' sword became engulfed in dark purple energy until it looked like a jagged piece of dark purple energy, he made a circle in the air and thrust his sword into it and unleashed a massive storm of dark purple energy with dark blue lightning bolts along with it at them.

Y/N, Pyra, and Natsu both pointed the crimson red flaming Aegis sword at B/N and Malos.

Y/N, Pyra, and Natsu: AEGIS DEVIL DRAGON: CRIMSON INFERNO BURNING SWORD!!!

A massive, crimson fire was blasted out of the sword; the fire took the form of a dragon and completely broke through Malos' attack, and both hit B/N and Malos dead on. B/N and Malos was flung into the air with the red fire, and was completely engulfed in its flames.

Malos: NOT AGAIN!!! DAMN YOU SPARDA!!!! DAMN YOU IGNEEL!!! AND DAMN YOU SISTER!!!

B/N yelled in pain, and in even more as the fire burnt away B/N's Devil Trigger form, leaving his human form, he and Malos yelled in even more pain as the flames finally stopped and they were sent high into the air. The attack was powerful enough to slice or burn through many trees and even destroyed a mountain range.

Everyone down below saw this; their eyes and pupils shook, as they honestly couldn't believe what just happened. The sword was smoking, along with Y/N, Pyra, and Natsu as their eyes held deep glares and determination.

They saw the unconscious, human-appearance, B/N land and flop on the ground. His clothes were completely torn as his body smoked. His eyes were white and without pupils, signalling his defeat. Next to him, was Malos in a similar state.

Nia: (shocked) Holy crap, I can't even believe it... They beat B/N and Malos...

Y/N and Natsu both let loose ear-splitting roars into the air that could be heard from miles around, all while Pyra smiled at them.

Chapter 21 ended.

Done. What do you think of that? Eric and I worked hard on this chapter, I hope you guys like it. Anyway, I have one more chapter of this arc.

Just so you know, this will follow along the main Fairy Tail, RWBY, Resident Evil, and Edens Zero storylines (with some minor alterations) with Devil May Cry, Xenoblade, Scarlet Nexus, Kaiju No. 8, Bayonetta, and God of War characters, a few OCs, and even a few original arcs.

See you all soon.