Deku/Tanjiro: *Senses something*Rimuru, behind you!

Rimuru turns to see a red light passing by him. The red light crashes down between the party and the Orc Lord. As the dust clears, everyone sees the puppet master of Orcs, Gelmud.

Rimuru: A majin...

Tanjiro: He must be Gelmud that Benimaru was talking about.

Gelmud: What's the big idea!?! You have some nerve choosing to interfere in the great Lord Gelmud's plans. A new Demon Lord who would've done my bidding was just about to be born, but now you've gone and ruined everything!

Rimuru: A Demon Lord?

Deku: Say what now?

Gelmud: You heard me! Why do you think I gave out so many names? Sowed so many seeds? It was all part of my plan to create the ultimate pawn!

Deku(Mind): Is this guy serious?! And I thought that All For One was the worst.

Hakuro: Now I understand...

Benimaru: *Clenches his fist*

Souei: That's why you attacked us?!

Shion: And Killed our people?! *Clenching her sword*

Rengoku: How heartsless of you!

Obanai: *Hisses* Unforgivable!

Tanjuro: A person like you should not born after the sins you have committed.

Everyone was tethered in front of Gelmud, the Orc Lord and his army behind him.

Gabiru: Oh, thank goodness, that's Lord Gelmud himself. But why are you here? Could it be that you've come to save the Lizardmen?

Gelmud: Shut up, you stupid lizard!

Lizardmen: ?!?

Gelmud: Why don't you just let the Orc Lord eat you already?!

Gabiru: *😧* Huh?!?

Melmud: Get it through your head! You're literally so worthless that you'll never be anything more than a nuisance! But if the Orc Lord eats you, you'll become part of his strength! Take heart in the fact that at least if you die you'll finally have served some sort of purpose. *Turns towards the Orc Lord* Dinner is served, Orc Lord!

Orc Lord:...

Gelmud: What's wrong?

Orc Lord: ...A new Demon Lord will be born...? I don't understand...

Gelmud: Ugh. You really are an imbecile. *Points his staff at him* It's you! You'll become the Demon Lord, the Orc Disaster, and rule over the Forest of Jura. That has always been the plan, and it's what they and I desire!

R/D/T(Mind): Who's "they?"

Orc Lord: ...

Gelmud: Why are you just standing there, YOU FAT, STUPID PIG?!

Nezuko: Okay, I think I heard enough of your rembling nonsense.

Melmud: *Turns to Nezuko* Excuse you?!

Nezuko: You got some balls to come here, I'll give you that. But if you're using minions to serve under you that are powerful then you, *😈* That makes you the weakest link in the book.

Melmud: *😡* W-Why You! I'm the great Gelmud!

Nezuko: Tresh would be a better name than great.

Tanjiro/Tanjuro(Mind): *😦* Damn, where did Nezuko become savage?

Melmud: Alright! You ask for it! I'm going to make you regret underestimating me! I'll show you the power of a superior majin! Deathmatch Dance!!!

Gelmud charges up a massive ball of energy which turns it into many smaller balls of energy. He sends all the energy balls at Nezuko which she gets hit by them.

Everyone: *😨* NEZUKO!!!

Gelmud: Ha! So much for being-

Nezuko: Is that it?

Gelmud: Huh?!?

Nezuko walks out from the smoke and whips what's left of dust off her shoulders.

Nezuko: You call that superior? You really are a weakling. I didn't want to use my form on someone weak... but why not?

Her body then transforms as her body larges and grows a horn on the right side of her head. Everyone except for Tanjiro and Tanjuro are shocked to see Nezuko's demon form.

Nezuko: *Growls*

Gelmud: What is that supposed to do!?! Just because you turn into tall hotty doesn't mean you-

Gelmud was cut off when Nezuko appeared in front of him. Gemlud's eyes widen to see her getting in front of his face. Then Nezuko used her legs to kick Gelmud in the gut and sent him flying into the air. She then appears above him and sends another kick, making him go airborne.

Gelmud: GRRRR!!!

Gelmud tries to fire an energy ball at her but Nezuko uses her Tengu wigs to speed after him and kicks him again sending him crashing to the ground. Nezuko lands in front of him.

Nezuko: Had enough yet?

Gelmud: GRRRR!!! HOW DARE YOU!!! YOU DARE HIT THE GREAT GELMU-

Nezuko kicks him down and then stomps him repeatedly.

Nezuko: *😈* How does it feel, huh? Being outclassed by someone who's way more superior than you! Are Ready. To. Atone?

Nezuko continues stomping on his chest violently as she laughs wickedly. Everyone who are watching this are terrified and weirded out by Nezuko's power and her change of personality.

Everyone: *😦* Is that really, Nezuko?

Rimuru(Mind): *😰* Remind me to not piss her off either.

Gelmud: AGH!!! LET ME GO!!!!

Nezuko: Sure.

She kicks him on the head which sends him flying again.

Gelmud: *Lands perfectly* I'LL KILL YOU!!!!

Gelmud fires more of his energy balls at Nezuko, but she deflects them all by using her legs. Meanwhile with the others...

Kumoko: She really knows how to put on a show.

Shion: You can say that again.

Benmiru: And her strength and speed is incredible!

Hakuro: And that form of hers... Have you noticed?

Giyu: *Nods* Yeah

Obanai: What power? She can even beat an Upper Rank if she uses it.

Mitsuri: Go, Nezuko!

Insuke: Beat his ass!

Ochako: Have seen this type of power before, Kanao?

Kanao: No... I heard stories from Tanjiro, so this is my first time seeing it in action.

Zenitsu(Mind): *🥰* Oh, Nezuko. Even in that Demon Form of yours, you are still cute to me.

Rimuru: Man, Tanjiro, your sister knows how to put a kick into it.

Deku: Literally.

Tanjiro: Nezuko has been training ever since we came into this world. She is even stronger than our father.

Rimuru: It really is a good thing that we have someone like her on our side... I really don't want to get on her bad side... *Shivers*

Back at the battle, Nezuko appears behind Gelmud and Roundhouse kicks him on the side, and lands near the Orc Lord.

Gelmud: AAAAAAAHHHHHHH!!!! DAMN YOU!!! YOU'RE FINISHED, YOU'RE HEAR ME? I'M GOING TO MAKE YOU-

Nezuko puts her hand in front of Gelmud's face.

Gelmud: Huh?

Nezuko: Exploding Flames!

She ignites Gelmud on fire. He screams in pain as the pink flames burn through his skin.

Gemlud: GAAAAAAHHHHHH!!!! WHY DOES IT HURT SO MUCH?!?!

Nezuko: I'll tell you a secret. My flames are very effective against demons when they contact it. So now you feel the pain of those you killed, you demon scum.

Gelmud: AAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHH!!!!!! MAKE IT STOP!!!!

Nezuko: Don't worry, my flames won't kill you that easy.

Nezuko then extended his nails.

Nezuko: *😈* But my claws will!

Gemuld: Wait, hold up! Let's talk about this! Why don't you and I team up?

Nezuko: Hmmm... Let me think... Nah.

Nezuko then severed Gelmud's head as it rolled towards the Orc Lord's feet.

Kumoko: *😃* Nice job, Nezuko!

Nezuko: Thanks, but don't count this battle over yet. We still have the Orc Lord to deal with.

Benimru: Right!

Meanwhile, the Orc Lord was looking down at the severed body of Gelumd as he had no idea what to do. That's when he hears a voice in his head.

???: {Geld, you must evolved into the Orc Disaster. Eat anything that gets in your way}

The Orc Lord's eyes widen a little as he remembers the name that Gelmud named him. He also remembers how did he became a demon when we get a flashback of him meeting Muzan.

Muzan: You can call me your king, but you can call me..."Muzan Kibutsuji."

Geld: Muzan...Kibutsuji?

Muzan: Tell me, do you want to save your family from endless hunger?

Geld: ...As long it helped my people, then I'll do anything.

Muzan: Then will take my offer and become one of my "Twenty Kizuki?" If you do, then you people will live in this living hell.

Geld:...

Gelmud: You should take it, honestly. You won't regret becoming his elite.

Geld: ...If it is for my people, then I'll do it.

Muzan: Good...

Muzan then raises his hand as a cloud flows over them.

Muzan: Now, then, can you become a worthy demon? Maybe you'll be part of my Twenty Kizuki like the others and rise to the Upper Ranks.

The Flashback ends with The Orc Lord starting to move as everyone was one guard. The Orc Lord then kneeled down at the dead Gelmud and decided to eat the carcass like a wild animal.

Rimuru(Mind): He's eating Gelmud...

Everyone gets ready as the orc lord starts to evolve.

Great Sage: {Confirmed. The Orc Lord Geld's magicules have drastically increased. Evolution to Demon Lord has commenced}

Rimuru: !!!

The Orc Lord then changes as a black and purple aura surrounds him. When it stops, the Orc Lord gets up and his body becomes muscular, emitting a demonic aura. What's even worse is that the Orc Lord's eyes have "Upper Rank 10" gouged into his eye sockets.

[Upper Rank 10 -Orc Disaster]

Great Sage: {Successful. Geld has evolved into the Demon Lord known as the Orc Disaster}

Rimuru: Well, that's not good... This just got harder.

Deku: This power he now possesses is insane...

Tanjiro: And he has the Kizuki Rank in his eyes.

Rimuru: Guess we should do something about him.

Deku/Tanjiro: Hai...

Orc Disaster: RRRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!! I AM THE GREAT ORC DISASTER! AND I AM THE ONE OF THE KIZUKI THAT WILL DEVOUR ALL IN THIS WORLD!!! My name is Geld! Geld, the new Demon Lord!

Rimuru: If we don't do something to stop him...it really will be a disaster.

Benimaru: Shion!

Shion: Right! I'm on it! *Charges at the Orc Disaster*

Rimuru: Woah! Hay!

Benimaru: Allow us to handle the pig.

Shion starts dashing toward the Orc Disaster with Inosuke aiding her.

Shion: You call yourself a Demon Lord!?! That's some ego! Now, prepare to die!

As she raises her blade, the Orc Disaster easily blocks it with his own sword. Then Inosuke comes up from behind and calls out his beast breathing.

Inosuke: Beast Breathing-First Fang: Pierce!

Just before Inosuke can pierce the Orc Disaster's skin, in a quick motion, the big pig pushes Shion away and avoids the twin blades. Shion dashes after him again going for another attack. As The Orc Disaster was about to down-slash her, Hakuro appears above him and cuts off his head.

Rimuru: They did it!

Tanjiro: It's not over yet.

They notice that the Orc Disaster was still alive well carrying his head. He then reattach his head back to his body thanks to his quick regeneration. Half of the people were shocked to see the Orc Disaster's fast healing abilities.

Tanjiro: I knew that his head severing won't work...

Rimuru: His healing abilities are insane!

Deku: Let's just hope our plan works

Suddenly the Orc Disaster gets covered in steel threads by Souei and tells Benimaru and Akaza to attack. Benimaru fires his Hell Fmale well Akaza uses his Blue Silver Chaotic Afterglow attack which he unleashes an omni-directional barrage of countless thin and sharp shockwaves. Ranga joins in and unleashed Black Lighting at him. This causes an explosion as everyone takes cover.

Akaza: Hope that at least did some damage.

Rimuru: *To Ranga* Out of Magicules?

Ranga: Forgive me...

Rimuru: Rest in my shadow.

Ranga: Right. *enters Rimuru's shadows*

As the dust clears, they see the Orc Disaster with some burns and bruises all over his body. He gets out of the crater and looks at himself.

Obanai: He's alive after all of that!?!

Orc Disaster: So this is what pain feels like...

Kumoko: Seriously!?

Orc Soldier: *Appears and bows* My lord... I offer my body up to you...

Orc Disaster: ...Alright...

The Orc Disaster grabs his soldier tightly and eats him like a lion. His body then starts healing as all the injuries are gone in mere seconds.

Rimuru: Self-Regeneration and Healing Magic?!

Orc Disaster: MORE FOOD! I'M STILL HUNGRY!!! I NEED MORE POWER!!! GIVE IT TO ME!!!

He sends a Deathmatch dance at them. The attack quickly scatters and surrounds everyone. But Rimuru easily devours the attack.

Deku: Let's end this.

T/K/R: Right!

Deku dashes after the Orc Disaster and uses Fa-Jin making him go faster and faster around the Orc Disaster.

Orc Disaster: What!?!

Deku uses his sword and sends multiple slashes at high speed. Geld manages to block one but gets hit from behind. Tanjiro followed suit and charged at the pig demon as his flames appeared from his katana.

Tanjiro: Hinokami Kagira-Sun Halo Dragon Head Dance!

Tanjiro unleashed several consecutive slashes at Orc Disaster, cutting his legs, arms and torso. Deku takes this chance and pins the demon pig by using his Black Whip.

Deku: Kumoko, now!

Kumoko: Right! Take this you, swine!

Kumoko fires a dark magic attack which hits the Orc Disaster head-on. Next was Nezuko who used her Exploding Flames attack on his legs and arms preventing him from attaching his limbs. Since the Orc Disaster is a demon, it causes a lot of damage and burns them away into ashes.

Tanjiro: Thanks, Nezuko.

Nezuko: *😁* No problem.

Deku: Let's not celebrate yet, we need to attack him all once before he regrows his limbs back.

T/N/K: Right!

Deku: Dragon Breath!

Tanjiro: Sun Pyro Ball!

Nezuko: Heat Blast!

Kumoko: Dark Evil Eye!

After combining their attacks, Deku, Kumoko, Tanjiro and Nezuko strike the Orc Disaster with a powerful blow, resulting in a massive explosion. Once the dust settles, they notice the demon pig is healing his wounds, but it is slowing down due to the impact of Tanjiro and Nezuko's magic abilities.

Tanjiro: It's working! His healing magic is slowing down.

Deku: Tanjiro, Let's attack him at once with our swords before he recovers.

Tanjiro: Right.

Deku and Tanjiro dash towards the demon pig at full speed. Deku uses his Smokescreen around the area and blocks the Upper-Rank's vision. The Orc Disaster was confused and tries to find them. Tanjiro appears behind him which Geld notices and turns around.

Orc Disaster: GOT YOU!!!

As Geld attempts to strike, Tanjiro vanishes and reappears behind him, slashing his ankles. Meanwhile, Deku appears and cuts off Geld's arm that was holding the cleaver. Together, Deku and Tanjiro stand side by side and deliver a powerful slash that marks an X on the Orc Disaster's chest.

Orc Disaster: AAAAGGGHHHHHHHHHH!!!!

Everyone: Incredible...

Rimuru(Mind): Those two know how to work as a team. Is like people always say, "Teamwork makes the dream work."

Back in the battle, the Orc Disaster regenerates his arm and chest and starts to get angry now.

Orc Disaster: NO MORE GAMES!!! CHAOS EATER!!!!

Geld summons his eaters at the two. Tanjiro used his sword to easily deflect them as Deku flew into the air and dodged them. Deku then flies towards Geld and throws a fist at him.

Deku: Detroit Smash!

The Orc Disaster blocks the punch but was sent backward. Next, Rimuru summons Black Lighting and hits Geld causing some damage. Rimuru then looks at him with his sword covered in black flames. As the Upper-Rank blocks it with his cleaver, it starts to melt through. He lets go of his cleaver as it completely melts away. Then Deku comes up from above and hits the Orc Disaster in the face with a Flow Cowl-Shoot Style. Geld was sent back a few feet away from Deku and Rimuru. Geld fires his Deathmatch Dance at them, but Rimuru easily devours them all. Deku decides to end this battle and transform into his new dragon form.

(A/N: I know that's a Rayquaza, but pretend this is Deku's new Dragon form that looks like it)

Dragon Form Deku then used his Black Whip to bind Geld preventing him from escaping. Geld struggles to break free as he tries to bite off the whips that were restraining him.

Deku: Now, Rimuru!

Rimuru: Right! Go Predator Skill!

Rimuru lunges at the Orc Disaster in his slime form and slowly covers up the Geld's body. Geld struggles to break free from the Black wipes and Rimuru's slime body as the slime starts to eat him. We then get a Flashback of Deku gathering Tanjiro, Kumoko and Rimuru for a quick meet-up.

Deku: Tanjiro, what type of demons in your world are?

Tanjiro: Well, they eat human flash and they can regrow their limbs back like nothing happened. There are even some demons that can regrow their heads back after being beheaded.

Rimuru: So, there might be a chance that the Orc Lord will be immortal even after being beheaded.

Deku: And there is also a chance that he might also use any healing magic with those demon powers.

Kumoko: So what's the plan, dragon boy?

Deku: We need to weak him so Rimuru can use his Predator