Beacon (3rd Person Pov)
It was true terror, Atlesian Paladins were overrunning the place, Grimm was around every corner, the students of Beacon were fighting but it wasn't enough. One of the paladins punched Nora who blocked it from attacking Ren as she flew to the ground
Ren: Nora, no!
Coco had her machine gun out as she was shooting it only for it to carry on advancing towards her
Neptune: Uhh this is bad.
Coco: Well I guess now's a better time than any. Velvet!
Velvet: Really?
Coco: Just make them count.
Velvet approached the Paladin as Weiss struggled to her feet
Weiss: What are you doing? She's going to get hurt!
Coco: Just watch
Velvet stuck her hand out as a hologram of Ruby's scythe appeared, she then jumped in the air as she slashed at the Paladin, a hologram of Weiss's blade appeared as she struck the Paladin multiple times before forming Yang's Ember Celica and punching the Paladin she then created Blakes Gambol Shroud and tied it up making it fall over, before creating Killua's yo-yo's and smashing it's head in destroying it.
Velvet turned to get punched in the face by another Paladin as everyone started shooting at it again until it exploded the paladin tried to attack Velvet again when Weiss suddenly appeared in front of her with a glyph that had a sword coming out of it which then cut it in half.
Another Paladin then ran across as they all took a sigh
Sun: You have got to be kidding me!
The paladin soon exploded as they saw Y/n flying through it then landing on the ground in front of them
Neptune: Y/n?
Y/n: Oh... hey guys
Ikaros and Kazane landed next to him as they put up Aegis to block a dragon shot from Oren
Oren: Hahaha! This body is amazing!
Y/n: Yeahhh... shut up
The two Angeloids put down the shield as Y/n attacked Oren, the two caused the winds to blow the two looked as if they danced about with every punch they threw the other dodged it. Oren then threw a heavy punch as Y/n took flight with Oren following close behind
Y/n spins and kicks Oren's face who looked to take almost no damage at all from his attack
Oren: To think I was excited about fighting you
Oren punched Y/n's gut as he went flying into Xenovia
Xenovia: Y/n?
Oren: Move bitch get out the way!
Xenovia looks up as Oren prepares a blast and fires it, Xenovia then picks up Y/n and moves out of the way
Y/n: Xenovia... I can... take him
Xenovia places Y/n down and readies Durandal as Koneko joins her
Xenovia: Just leave this to us Y/n, take a breather
Y/n: Huh... yeah... sure... whatever
Irina runs towards Y/n and jumps over him slashing a Grimm about to attack
Irina: You don't happen to have enough energy to put up a shield do you?
Y/n: Huh... who knew... a destroyed moon... could look beautiful
Irina: Y/n?
Irina turned around to see Y/n close his eyes as she gasped and ran towards him when she saw his tail move wildly, Y/n then snapped his eyes open and started breathing heavily as she saw his chest moving
Irina: Y/n are you okay?!
Y/n's muscles expanded and strained themselves as his clothes started to rip, Irina seeing this started to get scared
Irina: Y-Y/n?
Y/n got up giving low shouts as he revealed fangs in his mouth, his eyes were now pure red as he released an aura that made the rocks crumble away his clothes fully ripped as his gave a shout that sounded inhuman, he then started release his aura more as everything was getting destroyed
Oren: What is going on?!
Everybody looked on at Y/n as his power started to shake Beacon, he then grew to a very large size turning into a great ape however his skin turned golden as he roared one last time making everyone fall back.
Y/n opened his mouth as blasts started to form and he started destroying everything in sight
Oren: It can't be! A Great Ape?!
Y/n formed a blast aimed towards Oren, Xenovia, Koneko and Irina
Xenovia: Oh no! Move!
They all did as they were told as they narrowly missed Y/n's blast
Irina: What's going on? Does he not remember us?
Koneko: He's lost all sense of who and what he is
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The Vault (3rd Person Pov)
18 had found Artoria who was with Ozpin as she followed them to the Vault, they all ran down the corridor whilst she looked on in amazement
18: What is this place?
Artoria: It's... a type of vault
18: You've been here before?
Artoria doesn't answer whilst 18 is confused
18: What would this school need to hide?
18 sees something ahead and stops
18: What? Who?
Artoria: 18...
Ozpin: Artoria! Get to the pods!
Artoria runs to the pod as Ozpin turns to 18
Ozpin: 18, if you would like to help, you can stand guard here
18 turns around and gets into a fighting stance
18: Someone's coming
Artoria: What do we do now?
Ozpin: *Sighs* We... Do nothing.
Ozpin types something into a screen as the pod opens up
Ozpin: You... Miss Pendragon have a choice to make
Artoria gets in the pod as it closes on her
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Destroyed Cafeteria (3rd Person Pov)
Blake was on the ground after fighting with Adam who was staring down on her
Adam: This could've been our day, can't you see that?!
Blake: I never wanted this! I wanted equality! I wanted peace!
Blake shot from her pistol whilst Adam blocked it with his sword
Adam: What you want is impossible!
Adam slaps Blake as she lays on the ground
Adam: But I understand... Because all I want... is you, Blake
Blake raises her gun only for Adam to kick it away
Adam: And as I set out upon this world and deliver the justice mankind so greatly deserves... I will make it my mission to destroy everything you love
Yang: Blake!
They turn to see Yang shoot a White Fang Member
Yang: Blake! Where are you?!
Adam looks back at Blake with a smirk
Adam: Starting with her.
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Beacon Courtyard (3rd Person Pov)
The battle had taken a turn as Grimm were being eradicated by Y/n but his monstrous power was out of control as he attacked both students and Grimm, he growled looking at Oren as he smashed him making him fall into the ground creating a crater
Kamine: Brother!
Kamine goes to attack Y/n but he slaps her away, within the sky they see a bolt of electricity hit the ground as a gigantic figure lands in front of the bolt and they see Berserker and Killua
Irina: Did they just jump from Amity Colosseum?
Xenovia: No time to think about now, quick dodge!
Irina and Xenovia move out of the way to avoid getting crushed by Y/n's foot as they see Ikaros and Rias flying up to him
Ikaros: Master!
Rias: Y/n?
He roared at them and shot a blast which they both dodged, they advanced towards him when he grabbed the two of them and squeezed them together getting a cry of pain from them. Y/n was about to crush them in his palm when he was hit by a bolt of electricity, turning around he saw Akeno in the air with her arm raised.
With a roar Y/n jumped up and smacked Akeno to the ground making a crater of her own as Y/n landed and roared releasing his aura.
Berserker gave his own roar and jumped up to attack Y/n only for him to smack him through about 20 buildings
Killua: What's gotten into Y/n?
Koneko: He just turned like that out of nowhere
Killua: Tch any of you know a weak spot?
Xenovia: Nope
Y/n roared once more and shot Ki blasts everywhere destroying the entire place
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The Vault (3rd Person Pov)
The place was shaking from Y/n's power as Ozpin was typing something into the screen
Ozpin: Are you ready?
Artoria looked over to Ozpin and nodded
Ozpin: I... I need to hear you say it
Artoria: Yes
Ozpin: Thank you Miss Pendragon
He types something on the screen as Amber's pod rises up and her aura starts to glow around her as the wires connected to her pod turn an orange colour before doing the same to Artoria's one. Artoria then starts to scream in agony and shakes
Ozpin: I'm... so sorry
18 grits her teeth and shoots an incoming arrow with a ki orb before firing a blast at Cinder who dodges and fires three more arrows, 18 releases a wave destroying her arrows as Cinder created a spell underneath 18 which explodes then fires an arrow that pierces Amber
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Destroyed Cafeteria (3rd Person Pov)
Adam stabbed Blake gaining Yang's attention as she heard Blake scream, Adam then faces Yang with a straight look on his face
Yang: Get away from her!
Blake: No... Please..
Yang screams as her semblance activates and she charges at Adam who unsheathes his sword and slashes Yang
Yang falls on the ground knocked out
Blake: Noooo!
The cafeteria is then destroyed as they see Y/n in his Golden Ape form, he looks down on Adam then fires a blast at him which directly hits and he flies through the building, Y/n then looks down on Yang and Blake and opens his mouth as ki forms within it, he suddenly stopped when he saw Serafall walking out of a magic circle
Serafall: So this is your Golden Ape form, let's go for a test run shall we?
Rias: N-No Serafall, d-don't he'll kill you!
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The Vault (3rd Person Pov)
Artoria was banging on the glass as a golden light left Amber and went to Cinder as she started to glow, 18 charged with her fist reeled back
Ozpin: Stay back!
Cinder released a shockwave that 18 blocked by summoning her energy shield, Artoria breaks free from the pod as she summons her Excalibur she then charges only for Ozpin to stop her
Ozpin: You and 18 need to get out of here! Find Glynda! Ironwood! Qrow! Bring them here right away! The tower cannot fall!
Artoria: But I can help
Ozpin: You and your team are too important to fall here, you may not have the maiden powers but I can tell that you as well as the rest of your team will be the ones to decide what happens tonight and what happens in future events. Now go!
Artoria is encased in a blue aura as 18 flies off whilst Artoria runs at a quick speed, watching them Cinder smirks then turns to Ozpin
Cinder: How foolish of you, those two could've helped and yet you tell them to escape
Ozpin: Their power is much greater than yours and will not be needed in this battle
Cinder: Nothing is stronger than the power of the maidens, I'll prove that here tonight!
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Destroyed Cafeteria (3rd Person Pov)
Y/n threw Serafall into a wall as he roared, she got up and formed a magic circle then launched ice at his face directly hitting him only for it to have no effect, Y/n raised his fist ready to attack when Ikaros got in the way making him stop and growl
Ikaros: Master please
Ikaros took flight and approached Y/n's face, everyone looked on as Y/n growled more
Ikaros: This isn't like you Master, your a kind hearted saiyan who wants to protect his loved ones, is this what you want to become now? A cold killing machine *Gestures to everyone* You want to kill everyone?
Akeno then took flight and joined Ikaros as well as Kazane
Akeno: She's right, your not like this you only want to protect, never destroy
Kazane: Y/n remember who you truly are, what your purpose is, *Holds up a photo* who your friends are!
Y/n looks at the photo as he takes it out of Kazane's hands he then looks between the photo and the three girls in front of him
Kazane: Do you remember?
Y/n growls in response as he then moves the three girls and looks up to the moon, a golden aura appears around him as he starts to growl more frequently
Serafall: What did they do?
Killua: *Chuckles* I expected nothing less
Serafall: You must be Killua, mind explaining?
Killua: Out of all the people to get Y/n back it just had to be his lovers, how ironic
Serafall: I don't understand...
Y/n raises his hands as he takes a step forwards, electricity cackles around him as he tries to reach out for the moon, he then starts to give out a shout
Oren and Kamine were watching from a distance as they saw what was happening
Oren: What's he doing?
Kamine: I don't know, but I sense trouble from it
Y/n starts to shimmer a bit as he gets shorter and shorter, his shouts started becoming more and more human
Y/n then holds his head then leans back as he gives out a shout as he's covered in a golden aura destroying everything around him as Killua and Rias pick up Blake and Yang and get them out, they then see the Cafeteria crumble as there's a load of smoke, they all look on in shock as they see Y/n in a form, he had black hair that reached his shoulders and his red bangs seemed longer almost reaching his chin, he had fur that covered his body yet his chest was exposed
(A/N: Bottom Right)
Irina: What is going on?
Rias: A new form?
Koneko: He looks completely different to any form I've seen him take
Kazane: Y/n... are you still on our side? The good side?
Y/n turns his head to face Kazane as he stared at her, nobody moved for a few seconds with tension high in the air, Y/n suddenly smirked at Kazane making her smile. Y/n looks around at Beacon as he sees it's all destroyed
Y/n: I did all of this?
Ikaros: Don't you remember what happened? You started blasting everything in your path
Akeno: Yeah even me *Moves to Y/n and feels his muscles* Though you do seem to be much stronger now compared to before
Y/n smiles then pets Akeno's head before turning to Oren who was still in Issei's body
Y/n: It's good to be back but I have a fight to finish *Looks at his fist* Before my ki decides to spew out of control again
Ikaros: Still feel sick?
Y/n: I'd say this form is slowing it down a bit
Y/n then narrows his eyes as he appears in front of Oren with his fist encased in Ki as he then punches him and Oren is seen leaving Issei's body
Kamine: Brother!
Y/n then punches Kamine round the face driving her into the ground
Y/n: Final...
Oren: We need to get out of here!
Kamine: Right!
Y/n: Kamehameha!!
The two androids teleported before they could get hit by Y/n's blast as he breathed a sigh of relief and landed of on the ground with everyone flying/running towards him
Serafall: Oh my he really is cute up close~
Kazane: Please... now is not the time
Ikaros: Master... what's your order?
Y/n: My order... destroy every Grimm you see, evacuate everybody, I'm going to find 18 and Artoria now move out everybody!
Everyone (Except Y/n): Right!
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And so we've unlocked Super Saiyan 4, and at such a crucial time too but we'll see what happens next, until next time!