(The Office)
Sirzech: I'm sorry Y/n, I should've protect you.

Ozie: I'm sorry Y/n please I want you back...

????: hey quit the tears woman!!

Sirzech: huh?

(Miltia is the red one and Melanie is the cyan one)

(Sabrina)

(Lievre)

(Luna)

(Chidori)(since her actual name is very fucking long)

(Kirito: Ara, Ara you been fucked Quniella)

Sirzech: w..who are you people?

Lievre: we're Y/n's guards and Luna has something to tell you.

Luna: James wanted Y/n as a weapon but he sees him as a enemy since Y/n is a hybrid so he ordered SSSN, CRDL, Ace Ops and Ryuko to kill him.

Ozie: HE DID WHAT TO Y/N-SENPAI!?

Miltia:*mind* woah she's crazy with my boyfriend.

Melanie:*mind* about 2% of yandere in her.

Chidori:*mind* Y/n will have to deal with more girls.

Sirzech: once I get my hands on Jame's neck!!

Melanie: don't worry master got this.

Ozie: who is this "master" you're talking about?

Miltia: you'll see it's a surprise only team rwby knew this.

Ozie: how did?!-

Lievre: go to Glynda's classroom and he'll be there wait for you all to see his true self....

They teleported away in black flames and both headmistresses were getting a feeling that the boy they having feelings was back but they don't know if they're telling the true.
(Meanwhile)

Glynda: okay we would we have a match who would like to go first?

????: I'll do it!!

Elm: show yourself!!

The flames came out of the arena revealing a devil but his demonic energy just skyrocketed to the roof.

????: ohhh you're the inpatient one, fight head on without a plan. What a useless person you are, well 3rd. 1st place goes to Aqua and 2nd goes to Sakura.

Harriet: hey that's my teammate!!

????: like it matters that you and the people that I really fucking hate have to die by some person who is revived!!

Clover: what the hell you're talking about!?

Ivlis: I'm Ivlis the Flame Devil and son of The Devil himself!!

Sage: that's bullshit!!!

Ivlis:*chuckles* I want to fight SSSN, Ryuko Matoi, the Ace Ops and team CRDL!!!

Glynda: but sir that's....

Ivlis: oh I'm more stronger than them far than anybody!!

Ruby: Glynda let him, he wants payback.

Glynda:*sigh* fine.

The rest went to the blue side, Ryuko went into her Senketsu Synchronized and Ivlis went to the red side. He was grinning like a mad man as he summon Elucidator which shocked Lisbeth, Asuna, and Silica.

Lisbeth: wait that's Elucidator!! No it can't be him!?

Ivlis: wait I would like to have my announcement. This is my Ivlis transformation and I want reveal my true self to the whole  world.

Sun: what is it then!?

Y/n: Release.

A flame exploded on Ivlis and it was dying away to reveal Y/n with golden eyes.

Y/n: Remember me? The one you should not kill!?

Argo: Y/n!?

Asuna: I thought he was dead!?

Izumi:*mind* he's hot-wait did I said that!?

June: is that really you Y/n?

Y/n: that's right baby!! Y/n is back and ready to have his revenge-oh and also I have my wife and my daughter revived and with me.

Girls(the good 50%): Wife and daughter!?

Sachi: ahhhh Union where I was killed.

CRDL: You!!

Sachi: oh you miss me you bastards?

Sky: we'll kill you and your daughter!!

He charges at them, swings his Halberd but Y/n catches it with one hand.

Y/n:......

[There should be a GIF or video here. Update the app now to see it.]

Then his hand glowed like a neon sign and it exploded in pink and purple with a hint of red, the neon energy was melting Sky's face due to extreme heat.
(Not the neon itself but the tube)

Y/n: kill my family and you'll be in your grave.

Cardin: you killed him!! You demon!!

Y/n: half actually dumbass.

Neptune: what do you mean!?

Y/n: LET ME SHOW YOU WHO TRUELY I'AM!!

A black flame covers Y/n and he screams heading to the heavens and that made his parents proud mostly his father.

Y/n: this is my demon form fools.

He flashstep towards Ryuko and she was scared seeing a demon her life even thought she's a life fiber human hybrid(is that right?), she felt the demonic, soul reaper energy from him. She felt his breath going to her neck giving chills and he smirks.

Y/n: you know I met your father I respected him and I asked him to make a blade for me just like yours and I want hell and met your mother and your wanna-be sister Nui. I tortured them for so long they met my father and he erased them for good isn't nice? I'll show you.

Ryuko:*eyes widen with gasp*

Y/n: see? I was never joking. I would kill you with your father's weapon and you'll be in hell but I have other punishment and the outfit makes it perfect~

A kiss to the cheek making Ryuko blush and Y/n walks away.

Y/n:*yawns* I'm bored.

CRDL: WE'LL KILL YOU!!!

They all thrust their weapons in him, thinking they killed him which cause Rias to get angry but Y/n stops her.

Y/n: Rias calm your tits down I'm still alive!!

Cardin: how!? We killed you dead center!!

Y/n: oh let's just say that...

Then his body began to melt the weapons into hot liquid metal with a open smile but there were no teeth.

Y/n: because I'm a nephalem but the prince of hell and heaven itself!!

He grabs Elucidator and slices the rest of team CRDL in half. Everyone was shocked that Y/n killed them with one swing.

Glynda: oh....

Ozie: my...

Everybody: Oum/God/Satan....

Y/n: HAHAHAHAHA!!! HOW PATHETIC YOU SO CALLED "HUNTERS" ARE!!  TRICKSTER!!

He teleports faster than before then he went back to his human form and changed  to Gunslinger.

Y/n: GUNSLINGER!!

He rapidly shot barrages of bullets at team SSSN and the Ace Ops. Clover dodges them with his "luck" semblance but luck never like greedy people.

Y/n: looks like your luck just run out, I'm so lucky to kill you and your friends to send you in hell for your crimes.

His left arm began to smoke and blasted Clover's stomach revealing his spine and cooked stomach then his arm shot a waves of flames at Clover and cooked him.

Y/n: one cooked and bloodied Ace Ops is ready to be burned!!

Then a portal opened to reveal Lu the blue flame devil and also Y/n's girlfriends.

Lu: ohhhh hello Y/n my prince~

Y/n: Lu my lovely blue flame nice to see you.

Lu: what are you doing?

Y/n: oh*dodges Elm's hammer and punches her face* killing my bullies and the 50% of students who hates me.

Lu: oh my hellhounds want the cooked body.

Y/n: okay here a go and a kiss from me.

Lu:*giggles* thank you honey~

Y/n:*blush**a bullet to the head* your welcome and now can you excuse me I need to send souls to hell.

She went back to her home Y/n takes out the bullet out of his head and began to bleed badly.

Y/n: you dickweed.

Neptune: I fucked up didn't I?

Y/n: yep and you'll be shot to death.

Chidori: well they fucked up now. Since Y/n is the prince of Heaven and Hell.

Then Y/n finished shooting bullets and Neptune drops to the ground with blood leaking out from the bullet holes. Vine uses his semblance to extend his limbs and catches Y/n with his aura vines. He slams the nephalem to the ground and Harriet uses all of her might to punch him down. She jumps away from the crater and there was silent.

Vine: is he dead?

Xenovia:*mind* how dumb they are thinking they won Y/n is the son of Satan and The Goddess.

Then Y/n gotten up, feeling no pain and transforms into his demon form but it was different.
(Sullivan form)

Y/n: you ruined my coat of midnight and I'll kill you!!

He charges towards Marrow swing Tessaiga and Marrow uses his semblance to stop Y/n.

Marrow: got you because of my "Freeze command" semblance!!

Y/n:.....

Elm: hey why you're not talking!?

Y/n: bad move Marrow.

Marrow: huh!?-GHAAAAAAA!!

A clone of Y/n holds the black sword to Marrow's chest. It starts to push the blade more causing Marrow to groan in pain and it quickly finished him of shooting him to the head.

Sun: how!?

Y/n: that's my doppleganger style able to summon a shadow of myself to have more people to help me to kill the people I hate.

Shadow Y/n: master who should I kill?

Y/n: team SSSN Neptune is already dead so I'll deal with the rest of the Ace Ops. Ohhh yeah I forgot the other half of Union who hates my guts!!!

He summons digital demons and they all grabbed the students that hate Y/n while one of them grabs James and ties him up forcing him to watch Y/n's raw powers.

Y/n: you know General Ironwood why did you ordered them to kill my wife, my child and myself for what reason?

James: You're a Nephelam legends say that you'll bring destruction to the world!!

Y/n: that's false, believe those lies make me sick to my stomach!!

James: Sachi was giving birth so I ordered team CRDL to kill them so your dam father's bloodline won't fall into the wrong hands!!

Y/n: you know-That makes me feel to call my parents to have a "chat" with you.

His eyes glows white and it faded away. A portal opened to reveal Aoi and Yukito and everyone felt both the devil and the goddess's energy.

Ruby: it's really them.

Yang: no way, Y/n is the prince?!

Weiss: oh my.

Blake:*mind*ara ara Y/n~

Asuna: now I know I felt the demonic energy from Elucidator because the blade is created by the devil and uses his demonic powers to create the blade for the child.

Argo:*mind* Ara, Ara Kiri-boy nyaaaa~

Akeno:*mind* Ara, Ara~

Aoi: so this is the man who ordered those brats to kill my daughter in law, my grandchild and my son. You are no longer redeemable to be in Heaven along with those brats who bullied my son for so long!!

S.Y/n: master Y/n it's ready.

Y/n: now James you'll watch the death of the Ace Ops die from your very own eyes. GETSUGA TENSHOU!!!

He summons Zangetsu and swings the sword shooting out a big wave of spiritual energy. The wave hit them and killed them all with one swing.

James: YOU BASTARD!!!

Y/n: tell me who's the bastard that orders to kill my wife and my daughter, who order the brats to bully me and killed me, who made the white fang to become our enemies?! You did this and you'll be send to hell!!

He transforms into his angel form and grabs the scissor blades. He slices James into pieces, summons a portal to hell and kicks the body closing the portal.

Y/n: now for Ryuko Matoi.

He walks towards her as he transforms into his demon form, he licks his lips.

Y/n: as for you Matoi you'll be serving by me well my human, demon, Add, Ivlis and Sullivan forms until I forgive you understand?

Ryuko: Y...yes master Y/n.

Y/n: good....

Sinon: Y/n...

Y/n: oh no.

Asuna: GET BACK HERE YOU BAKA!!!

Y/n: I'M SORRY THAT I MADE YOU INTO SADNESS!!

Izumi: GET BACK HERE AND YOU HAVE FACE YOUR PUNISHMENT!!!

Y/n:*mind* can this get any worst!?

Ozie: Y/n-senpai....

Sirzech: you are in...

Glynda: big trouble.

Y/n:*mind* WHY!?

End of chapter