-Kazuma's P.O.V-

After I was taken away by Sylvia as we went to the facility and I start to panic and got scared after she says that she had a 'thing' on her lower part as I tried to struggle free.

Kazuma: Cut it out! Get your dick off of me! You wanna die?!

Sylvia: You don't have to worry. I'm not going to try anything. I managed to shake the others off my tail, so you're free to go.

I got up and rubbed the dust off on my but.

Kazuma: Where are we?

Sylvia: This is the Crimson Demon Village's underground storage facility.

That's when it hit me.

Rin: To tell you the truth...I went inside that facility last night.

Kazuma: (I see. This must be the facility that Rin talked about.)

Sylvia: My objective is to find the ancient magic weapon that's hidden here.

Kazuma: A magic weapon? (Wait, Rin didn't say anything about this. No, she didn't say there was a magic weapon in here.)

Sylvia: *Walks past Kazuma* The Mage Killer. It can neutralize any magic...A perfect counter to the Crimson Demons.

Kazuma: Something like that is down here?

I questioned as Sylvia places some kind of device track on the door. I guess that's what Rin told about those doors.

Sylvia: I can feel it close.

The lights on her device started to fade away immediately.

Sylvia: The barrier breaker isn't working? What exactly is this? It's not sealed with magic?

I looked in front of the door before looking at the machine-like thing beside the door. I then looked at it to see a controller. That's when it hit me once again.

-Flashback-

Rin: Yeah, it's a freaking gaming console.

Kazuma: Wait, a gaming console? Seriously?

Rin: Yeah, not gonna lie thought there was the Japanese language from it and it says 'To enter this facility, you must use the cheat code on the controller.' The cheat code was obviously one of the classic things.

Kazuma: What's the cheat code?

Rin: You'll know soon enough when you're either kidnapped or something.

-Flashback end-

Kazuma: (I see. This must be the controller that Rin was talking about. I guess she must've foreshadowed it when she says that I'm either kidnapped or something back in the morning...)

Sylvia: Hey! Are you awake?

I snap back to reality as Sylvia was looking at me.

Sylvia: You seemed to be deep in thought. Is there something bothering you? Is it your friends?

I put my hands in front of me in defense.

Kazuma: N-No! Not really, I was really thinking of that door behind it. I think, they just used a famous cheat code as the password for the-

I quickly shut my mouth. 

Kazuma: (No, Kazuma! Rin already told you about this! Don't spell it out to her!)

Sylvi: You're even better than I'd hope.

Kazuma: I'm still an adventurer, y'know! Don't expect me to give in that easily!

Sylvia: There's more to getting someone to talk than threats and violence, you know. *Licks her hand* You'll find my technique is on par with a succubus. I wonder how much ecstasy you'll be able to-

I cut her off as I grabbed the controller and used the cheat code.

Kazuma: Up, up, down, down, left, right, left, right, B, A, Start! There you go!

Sorry about this, Rin. Just then, everything around us in the room and the lights were on as the door in front of us started to open. We then see more stairs down there.

Sylvia: Do the things you do not bother you? Not that it matters. Now the weapon is mine.

Sylvia says as she walks down the stairs. Crap. I got so anxious, I put the password in. Still...

Sylvia: It's so dark. I can't see a thing.

I wonder if I can try her back using the same cheat code? Might as well try.

Sylvia: Hey, do you have anything I can use to light?

I quickly pushed her down as she fell down the stairs.

Sylvia: Hey! What do you think you're-

I quickly input the same cheat code back.

Kazuma: Up, up, down, down, left, right, left, right, B, A, Start, and away you go!

Just then, the doors in front of me started to close themselves, leaving Sylvia trapped in there.

Sylvia: Hey, you, stop that! Hold it right there! Wait, dammit!

Eventually, I had to wait for the others to arrive to come and get me.

...

Speak of the Devil, (Y/N) and Jack, was the first ones who entered.

(Y/N): Hey Kazuma, what did you do?

He says and yawned. I guess he was a bit tired because of how late it is.

Kazuma: Oh, I just trapped Sylvia behind this door. Rin was right. I guess this facility has a secret entrance and a gaming controller. Thanks for the information though. Oh, and your big sis literally foreshadowed that I was getting kidnapped.

(Y/N): Did she?

Kazuma: Yeah, she did.

Jack: That's quite nice of Aunt Rin. 

Eventually, the others came and I told them that I trapped Sylvia. As we were talking about splitting up the reward while we were hearing Sylvia's words behind the door.

Then suddenly the ground began to shake. Everyone ran outside as the building and the building exploded behind us.

-(Y/N)'s P.O.V-

After we ran out of the building, I got up from the ground and spoke up to everyone.

(Y/N): "Is everyone alright?!"

I asked as everyone was on the ground.

Everyone: "We're okay!"

Then suddenly under the glow of the moonlight, the one who appeared from the cloud of dust was...

Sylvia: Ah, hahaha! You've got guts, boy! Do you think I came here just to steal the weapon? My name's Sylvia! As you can see..."

With her body turned into that of a giant metallic snake...

Sylvia: "I'm a Demon King's general that can combine with weapons and the like! Growth Chimera Sylvia!"

With a loud laugh, Sylvia flaunted her victory-

(Y/N): "Ah, you gotta be shitting me..." 

I said in annoyance.

Megumin: (Y-Y-Y/N), this is bad!  That's the Mage Killer! Let's run! We need to get out of here, fast! 

Jack: This is the Mage Killer?!

Megumin: Yes! We need to run! 

F. Crimson Demon Villager: Abandon the village! It's doomed!  

The female villager says as they run off with two arms. 

Sylvia: We've had our ups and downs, but I have this power because of you. So I'll spare you. You can stand there and watch as I wipe this village off the map!

Then just that, as Sylvia slithers away and began to start having havoc and chaos on the Crimson Demon village. 

Rin: Well...that's just great...!

...

To see refuge, we all went to the hill of the demon god, the popular spot for couples, and watched the Crimson Demon village ravaged by the fire below.

???: "The village is burning..." It was a soft voice. Turn back, it was Arue and she was watching the burning village as she sadly spoke.

Sylvia, who had taken the form of a lamia, breathed out fire, flooding the Crimson Demon village in a sea of flame. Most of the Crimson Demons could use teleport magically to get themselves out of safety.

There were almost zero casualties, but their houses were burnt up in flames.

(Y/N): "Holy shit..." 

I said, cursing under his breath, I've never seen this scenery before seeing everything all burnt...making me feel horrified about this...I cleared my throat and spoke up.

(Y/N): "Guys, is there anything else we can do? We can't just stand around and watch your village burn!"

It was a good question as then Arue spoke up...

Arue: The Mage Killer does have...a secret countermeasure"

Hiropon: "There are ruins with an inscription that no one has been able to decipher..."

Kazuma: "Then we must make haste, lead the way, sir!" 

Kazuma said to him like if I'm his soldier, then suddenly Sylvia fires another her fire breath.

Megumin: "Where did it hit?!" Megumin questions.

Kazuma: "That was near your house!" I exclaimed.

Megumin: "Komekko's there!" Megumin says worriedly about her sister's safety.

Darkness: "Megumin, take Kazuma and the others to those ruins! Don't worry. I'll protect your family. That's my duty, right?"

Darkness orders with her crusading words. I like it.

Yuuki: I'm coming with you. I can't let you go alone, Darkness.

Darkness nodded at Yuuki in response. 

Kazuma: "Okay, this is do-or-die. Let's go!"

Hiropon: "Do or die, eh? For outsiders, you definitely understand our culture!"

Arue: "Not bad. If anything, things like this are our style!" Arue says with a pose. 

Crimson Demon 1: "All right, why don't we show her what we can do to defend the village?" One of the clansmen said as they all cheered up.

-Small Time Skip-

Eventually, Darkness and Yuuki decided to save Komekko. Kazuma, Jack, and I looking at a rock carving with a magical girl on top of a cat-girl while Rin, Aqua, and Megumin were behind it. 

Jack: Why would someone make this kind of thing? 

Kazuma: That's what  I was thinking. 

Rin: Guys, come take a look behind this rock!

Rin beckons as we went behind the rock and it was written in the Japanese language.

(Y/N): It's all in Japanese.

Megumin: Japa...what?

Kazuma: Uh, don't worry about it.

Aqua began to read the writings on the stone.

'I now leave this record of what has transpired. One day, the king trampled into my paradise demanding a weapon that could defeat the Devil King. But nothing can be gained from war...I tried to brush it off with that, but a lady researcher slapped me. I kinda think I already contributed enough to this country using the cheat ability I got when I came to this world! I'm all out of ideas! I managed to come up with a weapon to deal with the Devil King. I say that, but they're just humans that I modified...'

Crimson Demons: Master, please give us our new names.

'Master who? Boy, they're really acting the part. Between asking for red eyes and wanting identifying numbers on each of their bodies...Is everyone in this country a nutcase? I randomly came up with the name "Crimson Demons," and they absolutely loved it for some reason!'

Just then, Kazuma covered Megumin's ears.

Megumin: Kazuma, what are you doing?! Take your hands off my ears!

'The Crimson Demons found out about the Mage Killer that I made a prototype of, and they called it "our natural enemy!"

Crimson Demon 1: Fight sorcerer technology with sorcerer technology. We desire a deterrent to prevent it from running amok.

'I honestly don't hat their whole "pretentious but nerdy" aesthetic. For something I threw together, this deterrent turned out pretty awesome! It's only about as big as a clothes-drying pole, but it's got enough firepower to wreck the planet! I can't think of a better name, so I'll just call it the Railgun (TBD), for now. Baby!'

We kind of read everything and it was all messed up...and I knew it...that idiot was the problem who was responsible for creating the crimson demons and other things he had done for.

Kazuma: "What the hell do you mean Railgun (TBD)?!" 

Kazuma yelled as he covered Megumin's ears and Aqua moved her head away from that it was her fault...

Aqua: "I feel like...I should apologize." 

Aqua says nervously as Kazuma violently shakes her.

Kazuma: "Quit sending dumbasses into this world! Between the Destroyer and the Mage Killer, do you realize how many times this guy has screwed up?! I mean, thanks to Rin's information! She finally put all the pieces together!! Well, do you?!"

He yelled at Aqua as he started yelling again...

Kazuma: "They took a dangerous weapon and used it for laundry! Is there something wrong with the Crimson Demons?!"

Rin: "Kazuma, as much I would like to hear you getting angry, maybe that Railgun could be our weapon of choice! I mean, he said that rifle is really powerful! Maybe we could destroy Sylvia with it!"

Rin said with a plan as they looked at her and nodded in agreement.

Kazuma: "Okay that's it! We're going to get that railgun! (Y/N), Jack, Rin! You three head out to the battlefield and get everyone safe!

(Y/N): You got it! Come on, you two. Let's go!

Both Jack and Rin nodded as the three of you head out to the battlefield.

...

It didn't take s long enough to get to the battlefield and to see all the Crimson Demons, Sylvia, and some goblins.

Sylvia: Ancient Dispel!

I hear Sylvia casting something. 

Just then, a projectile circle appeared on Sylvia and the Crimson Demons. I was far away from that big projectile circle. After that, the projectile circle started to fade away.

Funifura: That scared me!

Dodonko: What the heck did she do?

Then one of the Crimson Demons spoke up.

(A/N: R.C.D means Random Crimson Demon)

R.C.D 1: Don't stop now! Keep lighting her up!

Funifura: Diabolic flames, run wild! Inferno!

Funifura casts her spell, but somehow it was sealed.

R.D.C 1: Our magic...

R.D.C 2: It's not casting!

R.D.C 3: W-We can't teleport, either!

Hiropon: This is bad! Run for it!

R.D.C 4: We can't take on the Mage Killer after all!

All of the Crimson Demons began to scatter like rats and ran away.

Goblin: If the Crimson Demons are just a bunch of oafs without their magic...

Goblin 2: We've got them now!

All of the Goblins began to cheer and chased after the Crimson Demons.

Goblin 3: Get your scrawny butts back here!

I was about to help them, but I see Dodonko and Funifura running away from them.

Dodonko: Hurry!

Funifura: Hey, slow down!

Unforunately, Funifura trips on a rock as she falls down, face planted. Dodonko goes back for her as she falls down and they were scared to death.

Sylvia: What's the matter, ladies? How unlucky for you. If you were cute boys, I might've spared you...But your people have made a mockery of us for too long. Get them!

Goblins: YEAHH!!!

Funifura & Dodonko: Nooo!!!

Jack: We need to save them!

(Y/N): Right!

-No one's P.O.V-

Sylvia commanded her minions to kill her, both Funifura and Dodonko hugged each other and they were scared.

Funifura: We're doomed!

Dodonko: Help us!

They cried for help.

Suddenly, Rin fired out magical bullets and the bullets hit directly at the group of goblins, making them dead.

Funifura: W-Wha...?

Dodonko: What's going on?

Rin: Up here!

Both Dodonko and Funifura looked up to see Rin with her Heavenly Boat Maana from above.

Dodonko: Rin!?

That's when you and Jack arrived at the scene. 

(Y/N): Are you two alright?!

Funifura: (Y/N)! Jack!

Jack: You two should get out of here, right now!

The Crimson Demon girls nodded and ran off together, leaving you, Jack, and Rin to handle the goblins and Sylvia.

Sylvia: So, do you three think you can handle all of my minions?

All of the Goblins smirked at you. You looked away for a moment before turning to them with a smile.

(Y/N): Oh yeah? I'm afraid that we're confident to win! 

Rin: Let's go kick their asses!

(Y/N) & Jack: Yeah!

-Battle Start-

https://youtu.be/9gBTKiVqprE

Sylvia: Fine then. Attack them!

All of the Goblins began to charge at you at once.

(Y/N): Nee-chan!

Rin: On it!

Rin then quickly loads a large magical bullet on Maana and fired it against a couple of goblins, making them dead.

(Y/N): Jack, with me!

Jack: Yes, mom!

You then summoned out Deadman's Guitar and switched it into Scythe mode as Jack pulled out her daggers in her back pocket.

Three goblins go for an attack towards you, but Jack quickly throws one of her throwing knives towards the two goblin's foreheads, making them dead.

Goblin 2: What?!

(Y/N): Eat this!

You then attacked the goblin minion and sliced him in half. Next up were two extra goblins with their clubs, ready to hit you.

However, you quickly switched into Shotgun mode and shot two goblins in point blank, instantly taking them down.

(Y/N): Come on! Who's next?!

You taunted as you started fighting more goblins. 

Jack, on the other hand, was dealing four goblins around her.

One of the goblins goes for an attack, but Jack blocked the attack using her dagger before kicking the first goblin on its knee, knocking it down, following up with a quick stab on the face, making it dead. 

The other three goblins were shocked by this because Jack is not an ordinary person they could take on, but they remained their composure as the second goblin goes from behind, but Jack did a quick backflip to dodge the attack as she lands behind him and throws her daggers behind the second goblin, stunning him for a moment. 

Jack then pulled out a cleaver in her back pocket before chopping the second goblin's head, making it dead.

Jack grabs the two daggers on the second dead goblin, she then turns to the fourth and third goblin minions who were seemed to be scared.

Goblin 3: Y-You're not some o-ordinary kid...!

Jack: No, we're not. We're called Jack the Ripper. Besides...

Jack says with an introduction as she approaches the two scared goblins with a cleaver. 

Jack: We're going to dismember you!

Jack then lunges towards the fourth goblin and slammed her cleaver onto the fourth goblin's face, making it dead. 

Goblin 3: P-Please...d-d-don't kill me...!

Jack then turns to the third goblin and then disappears out of the goblin's sight as the third goblin lets out a sigh of relief.

Suddenly, he felt a weight behind his shoulders and two dagger blades on his neck.

Jack: Sorry, there is no room for negotiation for a monster like you.

Jack says with a dark look on her face before slitting the third goblin's neck, finally killing the last one.

(Y/N): Jack, watch out! 

Jack then turns around to see four goblins trying to attack her with clubs, but Rin fired powerful bullets which killed the four goblins to save Jack's life.

Jack: Thank you, Aunt Rin!

Rin: No problemo!

Sylvia: Damn you three! You managed to kill some of my goblins! 

(Y/N): That's because the three of us are the strongest and versatile party members in Kazuma's party!

You tell Sylvia as she and the goblins had their teeth gritted and their faces filled with sweat.

You, Jack, and Rin were about to continue attacking them, but someone interrupted.

???: Light of Saber!

A glow of light appeared and stuck down a bunch of rocks. You looked up to see boulders coming down in your way. You quickly sped away, leaving the Goblins to get crushed by the boulders.

Everyone looked up to see a familiar face.

Yunyun: "You've done enough, Devil King's General Sylvia!" 

She says in bravery, before continuing to speak and began to pose.

Yunyun: "My name is Yunyun! Arch Wizard, and wielder of advanced magic! The foremost mage among the Crimson Demons, and the leader of this village!"

A bolt of lightning strikes behind her after introducing herself. Everyone was awing at her.

Yunyun: If you want to destroy the Village, you'll have to beat me first!

Sylvia: How adorable. But I actually hate cute young things like you!

Sylvia says as she slithers her way up to Yunyun.

Yunyun: My crimson eyes will overlook no evil!

She began to run away with Sylvia on her tail.

Yunyun: That is my crimson fate!

Gray: (You must help her!)

Gray spoke to you in your mind.

(Y/N): Rin, you need to help Yunyun out!

Rin: On it!

Rin then flies towards Sylvia and started attacking her using her bullets.

(Y/N): Jack, hop on to me! I'll just have to use my Scythe to climb up these walls to get up to her!

You said as Jack got onto your back and you began to jump and hooked your Scythe blades onto the wall before jumping off the wall and hook it back to the wall again and again.

Once you got up there, you see Yunyun standing around and Rin who was moving around while firing her bullets onto Sylvia.

Sylvia: Your attacks are so annoying, dammit!

Rin: But your hits can't hit me, you big dummy!!

You and Jack ran up to Yunyun and talked with each other.

Yunyun: (Y/N), Kazuma and the others are readying their attack on Sylvia!

Yunyun says as she pointed towards Kazuma who was readying the rail gun in the distance.

(Y/N): That's good to hear! Jack, Yunyun, I want you to head back to Kazuma's group to see if everything is prepared. Just let us know if it's ready!

Jack: Okay!

Yunyun: R-Right!

Both Jack and Yunyun ran back to Kazuma's group who was preparing the rifle. 

-Meanwhile with Kazuma-

Kazuma was finally done preparing the rifle as then a future holographic of the snipe appeared above the rifle.

Kazuma: "The scope is set! We made it in time! Time to put an end to this!"

Kazuma says aiming at Sylvia as he said his words to her, but he couldn't take the shot because you were running around, trying to fight Sylvia.

Kazuma: Damn, I can't get a clean shot!

That's when Jack and Yunyun come in.

Yunyun: We're back!

Kazuma: Glad you're here! Jack, can you do us a favor and tell your mother that the rifle is ready! 

Jack: On it! 

Jack then runs back to you at great speed and she started yelling at you.

Jack: Mom!! Kazuma said that the rifle is now ready!!

(Y/N): Okay! Nee-chan, we need Sylvia to head over at Kazuma's group! They got the rifle ready!

Rin: Alright! Follow me, Sylvia!! 

Rin then flies off towards Kazuma's group while you used SuperSpeed to carry Jack back to Kazuma's group.

Kazuma: "Thank you! Sylvia, this has been fun, but this is goodbye! Snipe."

He says and pulls the trigger...but nothing happened... 

Yuuki: What the heck happened?!

Kazuma: I don't know! Is this thing broken?!

Darkness: Here. let me see it! With things like this, if you just smack it...

Darkness started smacking the rifle, but Kazuma stops her.

Aqua: Hey, I charged that thing with plenty of magic power! What gives?!

(Y/N): Oh, give me a damn break already!! That was our only chance!!

That's when they heard laughter and it was coming from Megumin...

Megumin: "And now, the star arrives! "

Rin: "Uh guys! Anytime now!" 

Rin yells as she tries to hold Sylvia off, buying them some time.

Megumin: "I am Megumin! I am supreme and almighty in my dominion! She who calls down the power of the very heavens themselves!"

Sylvia stops for a moment as she sees the glowing pentagram in the distance which means that Megumin is using her explosion magic. 

Megumin: "Now display your force, by my command! Explooosssioonnn!!"

Megumin finally casts her spell on Sylvia, but instead, the magic power consumes into the gun...everyone stops and looks back at the gun...Yuuki looked at the glowing bar that says 'Full'. You realized that the gun requires magic power

Jack: "Guys! You better shoot her now! The reason why it wasn't triggered is that it didn't have any magic power!"

Jack said out loud as Kazuma returned to his composure and aims the gun at Sylvia as he said his words...

Kazuma: "Sylvia! Remember my name! And when you're on the other side, tell your buddies I said hi! I am Sa-"

He was about to finish his sentence but Kommeko just literally pulls the trigger as the bullet hits Sylvia's abdomen.

Kazuma and his party had deadpan on their faces and Sylvia looked down on to see her abdomen had a donut-shaped size of it.

Sylvia: "Wha...A-Am I...done?" 

She says in her last words before an explosion destroys her body, and in front of her was Komekko as she was making her cute introduction.

Komekko: I am called Komekko! The foremost lovable little sister among the Crimson Demons! And she who is stronger than a Devil King general! 

Everyone was literally deadpanned on what had just happened. 

Rin: Well...I guess that's that...

(Y/N): Yeah...you got that right, Nee-chan.

...

(A/N: That's that~! Stay tuned for more~!)