A few minutes later, and everyone who was inside the Fairy Tail guild hall piled outside. They formed a large circle around the area in front of the guild, which would serve as an arena of sorts for the upcoming brawl. Nevertheless, they all stayed a fair distance away from the center, as per Y/N's insistence. With that sorted, Natsu and Y/N took their places inside the ring.

Y/N: You ready for this, Natsu? You can still back out, you know.

Natsu: Are you kidding?! This is awesome! I'M ALL FIRED UP!!!

It was then that Makarov stepped up, in between the two combatants, and raised his hand into the air.

Makarov: Let the match... (swipe his hand down) begin!

As Makarov swiped his hand down, he stepped back as Natsu engulfed her hands into flames, while smiling. Y/N used his requip magic to change his outfit to a suit along with a mask shaped like a skull.

Mirajane: He used Requip magic like Erza. 

Elfman: What's with this outfit? 

Happy: Aye, especially his mask. 

Lucy: Not gonna lie, it's kinda creepy. 

Y/N: Now then, shall we begin? 

Natsu: Don't gotta tell me twice, buddy!

In her excitement for the fight, Natsu charged towards Y/N with her fiery fists ready to attack him.

Natsu: Fire Dragon Iron Fist!

Natsu leaped up and clenched her flaming fists as she slammed her attack in Y/N's direction. As the smoke cleared, Natsu noticed that Y/N was no longer standing in his spot.

Lucy: Wait, he's gone...?

Natsu: Huh? Where the heck did he go?

Happy: Look! Over there on the roof.

Natsu along with everyone else in the crowd looked up to where Happy was pointing to see Y/N who was now floating in the air. 

Y/N: Looking for someone, Natsu?

Natsu: What the? How the heck are you flying? 

Y/N: Air Walk. It allows me to float in the air. 

Levy: Amazing...

Behind Levy was a tall, slim young man with black hair. His most notable physical trait was his hair, which was highly unusual, in that a single tuft of it on the top of his head jutted upwards, and was reminiscent of a plant's stem. The rest of his hair was relatively short and was rounded at his forehead. He also had it cut on both sides of his head, each one having a spiraling motif. He wore a white, long-sleeved t-shirt, with a pair of golden belts crossing his chest, each passing over one of his shoulders. He also wore dark green, checkered pants.

This was Droy. His magic allowed him to create and control plant life through the use of magical seeds.

Droy: No kidding, this guy must be really strong. 

Next to Droy, stood both Levy, and another man as well, who was also slim, and was of average height. He had orange hair, which was kept jutting backward at the sides of his head. He had a bit of a sharp face overall, along with a prominently flat and defined nose that pointed downwards. He wore an open, light brown coat with white fur trimmings on its edges and sleeves, the latter of which reached down just below his elbows. Underneath this coat was a high-collared, light purple shirt, with its collar mostly left open. He also wore dark, baggy pants, the legs of which were tucked inside dark-colored boots. The most distinctive part of his attire was the fancy, extremely high hat that matched his coat, with a large brim and fur trimmings over its entire length, at regular intervals, in addition to a large, furry ball at the top of it.

This man went by the nickname, "Jet." His magic allows him to run at exceptionally fast speeds.

Jet: (smirk) As long as he's not faster than me, I should be fine.

Natsu: Hey! Get your butt back down here and fight me, Y/N!

Then, Natsu began to puff her cheeks up with her fire like she did earlier in the forest today.

Natsu: Fire Dragon Roar!

Natsu unleashed her massive roar of dragonfire up towards Y/N, but he slightly dodged it before he dashed toward Natsu and unleashed a barrage of punches at Natsu who to block his attack. 

Then, Y/N jumped in the air, raised his leg high and kicked Natsu even harder in her arms, making a crater below her feet.

Y/N flipped back away from Natsu and back on his original position to see that the Dragon Slayer was ready for more.

Natsu: (smirk) Hehe, that all you got?

Y/N: Not even close. 

He then teleports behind Natsu and kicked at the back, sending her flying before he engulfed his fist in flames. 

Y/N: Vanishing Fist!

He punched Natsu at the gut while unleashing a blast of flames from it. 

Cana: Wow, that's some firepower. That's hot. 

Gray: Did you just made a pun? 

Y/N landed on his feet, then, he saw Natsu was eating the flames, much to his surprise. 

Natsu: (burps) Wow, your flames the best I've tasted so far!

Y/N: Wow, so you can eat fire. But you're not hurt, are you?

Natsu: (smirk) Are you kidding? It takes a lot than fire to bring me down!

Y/N: We'll see about that. Jet!

Suddenly, he dashed around the area in great speed, surprising everyone as he came kicked Natsu at the back of her head. 

Droy: Dang, look at him go. I think the new guy might be as fast as you, Jet.

Jet: Tch, no he's not...

Levy: Well think, Jet. Can you move fast enough to bounce the way he does? 

Hearing that from Levy, Jet felt a little bit smaller. 

Natsu: Damn, he's fast now. Just how powers does this guy have? 

Y/N: Enough to deal with strong wizards like you. 

Natsu: Oh yeah?! Fire Dragon Brillent Flame!

Natsu creates a fireball from her hands and throws it at Y/N. 

Y/N: Jet Burn!

Y/N thrusts his fist which unleashed a blast of fire from it. Both attacks clashed with an even bigger explosion which made a cloud of dust. 

Y/N: (looks around) Trying to hide in dust cloud? Pretty clever, however... Scanning.

His eyes glow green as he scanned the area before picking up Natsu's heat signature. 

Y/N: I can see you! 

But when he turned, his hand accidentally touched Natsu's breast, causing the two to blush. 

Natsu: KKKKYYYYYAAAAAA!!!!!! 

She delivered a slap on his mask, causing him to tumble on the ground. 

Natsu: (angry) You pervert! How dare you lay your hands on my chest like that! (thoughts, blushing) Although, his touch felt good all a sudden. Wait, what am I saying?! 

Y/N: (blush) I'm sorry, I didn't mean to do that! 

Lucy, Gray, Mirajane, Cana, and Levy blush from what they just witness. 

Lucy: (blush) He touched her breasts... 

Mirajane: (blush) Oh my... 

Cana: (smirk) He's got some balls for doing that... 

Gray: (blush) Yeah... 

Levy: (looks down at her breasts, felt sad) How come my chest doesn't get any bigger? 

Natsu: You're gonna pay for that! Fire Dragon Iron Fist!

Natsu's right fist collided with his stomach. They along with Natsu were shocked as Y/N was sent back engulfed by Natsu's flames. Several wizards in the crowd screamed out in fear thinking that Natsu killed Y/N, which made her start to panic. 

Lucy, Cana, Levy, and Mirajane: Y/N!!!

Gray: You idiot! You really screwed up this time!

Natsu: OH CRAP! OH MAN! I'M SORRY! IT WAS AN ACCIDENT! I PROMISE!!

Just then, they heard a voice coming from inside the fire.

???: It's fine, Natsu. 

They saw Y/N coming out of the fire as his injuries from that attack have started to heal due to his Super Regeneration magic. 

Y/N: Though I kinda deserve that punch for... you know... 

Makarov: (thoughts) He even has magic that allows him to regenerate or heal any damage he received. Incredible. 

One of the aforementioned individuals was a man who was roughly in his mid-thirties. He was a slim, mildly muscular man of average height, with short, slicked-back dark blue hair. He had linear, dark eyebrows, dark eyes, and a prominent nose with a flat, rectangular front. The lower half of his face was covered in a considerable amount of stubble, which includes a thin mustache. He wore a high-collared, knee-length white jacket with the sleeves rolled up, and blue trim, as well as blue innards. Underneath this, he wore a black shirt, tucked into a pair of brown pants held up by a white belt with a golden buckle. 

This was Macao Conbolt. 

Macao: What the hell?! How did he survive that?!

Wakaba: Is this kid some sort of monster?! 

Y/N: Sorry for the scare, by the way. I wanted to test it and see how hot your flames were. So I didn't dodge.

Natsu: Nah, don't sweat it man. I knew you're weren't dead in there!

Gray: -_-...Yeah, sure you didn't flame brain...

Mirajane: Umm, Gray. Your clothes?

Gray: CRAP!!!

Natsu: So, how were my flames?

Y/N: Not bad, but you'll have to turn up the heat some more if you wanna beat me.

Natsu: I was hoping you'd say that, cause that's what I do best! Haha!

Y/N: (thoughts) Since fire is useless against, I'll just try some magic that would work against it. 

The Dragon Slayer then puffed out his cheeks and exhaled yet another stream of fire at Y/N.

Natsu: Fire Dragon ROAR!!!

He didn't even flinch, and instead held out his right hand towards the incoming fire torrent. Suddenly, and much to everyone's surprise, a powerful jet of water erupted from the palm of his hand and upon contact with the raging flames, stopped it in its tracks.

It created a huge cloud of steam that surrounded Y/N, making him completely undetectable within it.

After a moment with nothing happening, suddenly, Y/N lunged out from the steam cloud and towards Natsu. He moved so quickly that Natsu didn't have time to react before she felt a powerful fist connect directly with her gut, knocking her back a couple of feet. 

Y/N quickly moved in and delivered another punch to Natsu's face, which he tried to follow up with another left hook, only for the Dragon Slayer to dodge and spin around, igniting her leg in flame as she did so.

Natsu: Fire Dragon Talon!

Y/N was surprised Natsu was able to recover from both a gut-shot and a right jab to the face so fast. He was so surprised, in fact, that he only barely managed to bring up his left arm to block the fiery kick that would've connected with the side of his mask. The blow caused Y/N to slide across the ground a few feet to his right.

Y/N: Nimble, aren't you?

Natsu grinned as she wiped her mouth.

Natsu: Haha! Thanks for the compliment! You're not doin' too bad yourself!

Natsu had lunged at him, fists blazing and was prepared to strike again. 

Y/N reacted by lifting up both of his arms, and blasted twin jets of water straight into Natsu's face, sending the wizard flying back about a meter. Natsu landed on her feet but was coughing up water as a result of her face being blasted with it.

Y/N: You should know better that fire is weak against water. 

Natsu: (spat water out of her mouth) Even so, that doesn't stop me from beating you!

Y/N unleashed water blasts at Natsu who dodges them, she then kicked him at the back of his mask, causing him to fell on his knees. 

Natsu: Gotcha!  

Natsu went to strike at Y/N with her fiery fist, but then she stopped, much to everyone's confusion. 

Mirajane: Huh? Why did she stop?

Elfman: Is she scared? Talk about unmanly. 

Natsu: (thoughts) What the hell? Why did my body stopped? I was gonna hit him, but... (blush) his ass... 

WHY IS IT SO THICC?!?! 

The girls noticed his butt and couldn't help but blush. 

Y/N: (blush) Hey! Quit staring! Frozen Core!

He froze Natsu in place with his ice magic. 

Gray: He has ice magic too? 

Then the ice began to melt by Natsu's flames, turning it into a puddle of water as she broke free. 

Natsu: Man, that's cold! 

Y/N: If you think that's cold, you ain't see nothing yet! 

Y/N slammed his hand on the ground and created ice spikes toward Natsu, but she leaped forward, her leg wreathed in flame.

Natsu: Fire Dragon Talon!

Y/N: Hardflame Fan! 

Y/N generates a shiny green liquid that acts as a wall in front of him which blocked her attack. He then unleashes lightning at Natsu, shocking her. 

Natsu: (grunts) Damn it! He's got lightning magic too! But I won't give up!

Y/N: (thoughts) She's persistent, I'll give her that. I know fire is useless as long as she eats them. Lighting, water, and ice are offense counter measures while Hardflame Fan is worked for defense as long as her flames aren't hot enough to pushed past its limit. But she refuses to stay down, there has to be a way to...

A light-bulb went off in Y/N's head at that moment. He knew exactly how to beat Natsu.

Y/N: (smirk) Alright, Natsu. I'm giving you one last chance to forfeit! I suggest you take it, otherwise, you might be feeling this tomorrow.

Natsu: (grin) You gotta be kidding, man! This is great! I'm so fired up I feel like I'm about to explode!

Y/N: Fine then. But don't say I didn't warn you.

Natsu leaped into the air, above Y/N, her arms wreathed in flames. She swung her arms around in circles a few times, before hurling them at him.

Natsu: Fire Dragon Wing Attack!

The area around Y/N erupted in a fiery explosion, with Natsu landing on the other side of where she once stood, a few feet away from the smoke plume. The Dragon Slayer then took a look back at where Y/N was waiting for the smoke to clear so he could see what damage she'd done.

However, water began to form around Natsu which encase in a water bubble before ice began to solidify until it began an ice ball, trapping Natsu in it. 

Natsu: Hey! What's the big idea?! Lemme outta here!

Y/N: (smirk) Sorry Natsu, no hard feelings. 

Suddenly, he used Telekinesis to spin in place, much to the surrounding wizards' surprise. Then he made the ball then shot forward, rolling at a considerably fast speed as it began to roll in a large, wide circle with Natsu still inside.

Lucy: What's he doing to Natsu?!

Happy's eyes widened in realization.

Happy: Oh, I know! He remembered Natsu's motion sickness from the train earlier, and he's using it against her!

Gray folded her arms and smirked.

Gray: (smirk) So he's doesn't just have power, but he's got a brain to boot. Not bad...

After a few moments, Y/N stopped the ball and broke the ice with his Hardening fist, allowing a thoroughly dizzy and motion sick Natsu to fall to the ground, ready to puke her guts out.

Y/N: I think we're done here.

In the crowd, Makarov had been observing the fight very closely. Needless to say, he was just as impressed by Y/N's power and variety as everyone else was as well as the intellect he displayed. However, this fight raised a few questions in Makarov's mind.

Regardless, with that, Makarov entered the ring and stood next to the defeated Natsu and the triumphant Y/N.

Makarov: This fight is now over! And the winner is Y/N Shigaraki!

Most of the wizards in the crowd were still in shock at the result of the fight. Y/N had just defeated Natsu, and while others have accomplished this in the past, everyone was still surprised by how he had done it. No one had ever used Natsu's motion sickness as a weakness during a fight before.

He then turned to the crowd of wizards who had been watching the fight. For a moment, he had thought the members of Fairy Tail would be angry or upset that they had beaten their friend in a fight, but it was quite the opposite, as he was met with thunderous applause; much to his surprise.

Gray, Lucy, and Happy all walked over to a now-victorious Y/N.

Lucy: That was awesome, Y/N!

Happy: Aye!

Gray: Good show out there, man. It never gets old seein' charcoal-breath over there getting his butt whooped.

Y/N: (chuckles) Well, I'm glad it was entertaining at least. 

It was then that Y/N looked down, and looked back up at Gray with a blush on his face. 

Y/N: (blush) Uh... Gray? Your clothes...?

Gray looked down at herself to see that, once again, he had managed to strip down to only her bra and panties.

Gray: CRAP!!!

As Gray scrambled for her clothes, Y/N turned around to see that Natsu was currently struggling to her feet, still looking queasy from Cannonbolt's attack earlier. He then walked over to her, and in a show of good sportsmanship, he held out his hand to help Natsu up.

Y/N: You okay, Natsu?

Natsu: (weakly grin) Yeah ....It's nothin'....I'll be okay...can't wait to kick your butt for real next time...

Y/N: Hey, remember our deal. You agreed to it, so there's no backing out. This is the last fight you and I are gonna have. Besides, I don't think you really wanna take another trip with a moving ball, do you?

The only response Y/N received from Natsu was the latter's cheeks puffing out, and the Dragon Slayer holding her hand to her mouth at the mere thought of rolling around inside a ball again.

Y/N began to chuckle at how easily Natsu's motion sickness could be triggered until he heard a new voice call out over the noise of the crowd of wizards.

???: What's all this commotion?

The instant everyone heard the voice speak, it became dead quiet. Natsu's face became even paler than it already was upon hearing it, much to Y/N's confusion.

The All For One user turned around to see the source of the voice, to find that it was a young woman, who looked roughly his age but carried a strong, firm attitude. The first thing he noticed about her was the color of her hair, which was a bright scarlet color. The next thing that stood out to him is that she was almost completely covered in armor. She wore a breastplate over her torso, which had a red Fairy Tail emblem over the left breast, and a golden, asymmetrical cross that intersected over top of that. Her shoulders had three-layered shoulder plates, and she wore greaves on her forearms that ended in a wing-like structure at her elbows. She also wore a blue skirt, which was covered slightly by plates of armor attached to brown, leather straps that connected to her equally brown belt. In addition, she also wore black, knee-length boots.

Another thing that stood out to Y/N is that, despite her unusual wardrobe choice, she was remarkably pretty. Even more so than Mirajane.

Y/N: (thoughts, blushing) Oh wow, she's so beautiful and pretty. Who is this girl? 

However, it was then that Y/N took a look around at the gathering of wizards. For some reason that he couldn't understand, everyone present, save for Makarov and Mirajane, paled just as much as Natsu at the sight of this woman, and were slowly but steadily backing away in what appeared to be fear.

The scarlet-haired woman glanced around at the now-silent wizards, and narrowed her brow, seemingly irritated that no one was answering her question. However, Mirajane was the first one to break the silence as she approached the armored woman.

Mirajane: Welcome back, Erza! I'm assuming the job in Freesia went well?

The armor-clad, scarlet-haired woman, now known as Erza, turned to Mirajane with a neutral expression.

Erza: Yes, it went quite well. The townspeople are safe and it would appear that they're still upset about Natsu destroying their historic church. Now, I don't suppose you could tell me why everyone has gathered outside of the guild hall? Don't tell me Natsu and Gray have gotten into another fight...

Mirajane: Well, it wasn't Gray, exactly, but...

She then waved Y/N over, to which he responded by approaching the two ladies.

Mirajane: Erza, this is Y/N. Lucy and Natsu ran into him while they were out on a job today. He has no place to go, so Master is letting him stay here until he can get home. After he explained where he was from and what he could do, Natsu challenged him to a fight and lost. You just missed it, unfortunately.

Erza then turned to Y/N and gave him a hard stare, which caused most of the wizards watching to turn even paler.

Erza: Is this true?

Y/N: Well, that was more of a brief summary, if anything, but yeah. Pretty much.

Erza turned her gaze to Natsu, who froze completely upon realizing she was looking at her. However, she quickly returned her attention to Y/N and held out her armored hand. 

Erza: (smile) It's a pleasure to meet you, Y/N. My name is Erza Scarlet.

Y/N's eyes widened ever-so-slightly at Erza's reaction to Mirajane's explanation, or rather, her lack of one. Even so, Y/N took her hand and shook it with a smile on his face.

Y/N: (smile) I'm Y/N Shigaraki. It's a pleasure to meet you too, Erza.

After their handshake, Erza focused her attention on a certain Dragon Slayer, who, as the armored wizard approached her, began to tremble in fear along with most of the other wizards watching. She gave Natsu a good looking-over, almost as if she were checking to see if she was injured.  

Y/N: (thoughts) What's everyone so worked up about? She's just seeing if he's alright.

As if on cue, Erza brought her armored fist down onto Natsu's head with an audible clang, leading Y/N and everyone else, to wince.

Y/N: (thoughts) Oh... I guess that's why.

Erza: You idiot! How dare you challenge a guest of this guild to a fight! I have half a mind to beat you myself!

wizard away from Natsu, with the latter instantly scurrying over to the guild hall's entrance afterward.

Makarov: Now, now, Erza. Settle down.

As Makarov tried to calm Erza, several feet away from the two of them were Y/N, Gray, Lucy, Elfman, and Happy. Y/N looked to the group and pointed to Erza.

Y/N: What was all that about?

Happy: That's Erza for yah. Always bringin' down the iron fist. She's the strongest woman in Fairy Tail! She's super strong and super scary!

Elfman: She's the manliest one in the guild...

Gray: You do not wanna get on her bad side. Period.

All Y/N could do was stare at his newfound friends in slight bafflement. Was her strength really enough to warrant all this fear from everyone? Granted, it sounded like they still respected her, but even so, she didn't seem scary at all to Y/N, or at least not from their brief interaction anyway.

Y/N was snapped out of his musings when Makarov began to speak, with Erza standing at his side as he did so.

Makarov: Alright everyone, as fun as it was, the show's over now! Time for you to head back inside!

With that, the wizards all began filing back into the guild hall, with Makarov, Erza, Y/N, Gray, Lucy, Elfman, and Happy following them. It was still fairly early in the afternoon, so Y/N figured he might as well get accustomed to the place he'd be staying for the foreseeable future.

Chapter 4 ended. 

I hope you guys like that fight I made between Y/N and Natsu. 

Before I end this, since you guys have been supporting this book very well. I'm gonna give you guys 2 treats. 

1. Four or five new harem members (female or gender-bend) 

2. A male or female OC that will be a One For All user as long as you give me their description of it. For example, new, age, hair and eye color, body type, personality, likes and dislikes, powers and abilities, and back story. 

Also, I'm gonna replace some quirks with new ones. I'm getting rid of Overtime, Hard/Soft Reset, Aqua Vein, Splash Damage, Recharge, and Energy Spike. 

New magic: 

Bone Protrusion: This quirk allows the users to protrude sharp bone protrusions that cover the user allowing them to use it for offense and defense and being able to make them able to grow larger and sharper.

Brawn Boost: Hence the name, this Quirk gives the user a boost in physical strength.

New Ultimate moves: 

AFO: Dark Emergence: An ability only he can use, Y/N channels his power through his body at maximum efficiency, causing his body to glow with a red due and black sparks flickering. Think of it as his own version of OFA: Full Cowl.

Ground Zero: Air Cannon: Y/N delivers a massive air blast from above to level the ground below him.

That's all you need to know. Let me know what you guys think at the comments below, peace out and enjoy!