The team is to join class 1A at the USJ. Both classes were unaware of the danger they would face.

The two teams enter the USJ. The villains made their entrance. Class 1Z was ready for a fight.

Ajax: Stay back children. We'll handle this.

Ajax and Aizawa stood ready to fight.

They jumped into the fight.

Xena: What are we waiting for?!

Juillet: He told us to stay back!

Y/n: I don't think they will let us leave.

Y/n was correct. A gaseous villan was now blocking the entrance.

The black mass shrouded them all and scattered them across USJ

Y/n found himself in the flame zone.

Y/n took in his surroundings.

Villains began to approach him.

Villain: Sorry kid! But you will die here!

Y/n activated the first stage of his quirk.

Y/n: I wouldn't count on it.

Y/n charged for them. He used his claws to slash his way through them. By the end only one remained.

Y/n watched the last one charge for him, only for Juillet to appear in front of the villain and punch him rapidly.

The Villain was knocked out in a second.

Y/n: Hey.

Juillet: I saw you were here and came to help.

Y/n: Do you know where everyone else is?

Juillet: I did a quick sweep. Triton is in the shipwreck zone, Xena and Fay are making their way to the main battle.

Y/n: That's where we are headed to as well.

Juillet: Right!

The two ran off towards the center.

They saw Ajax making quick work of villains. Y/n punched away a Villain, sending him into three of his friends.

Ajax: Good to see that you are alive.

Y/n: The others are alive too.

Ajax: Since you are here. You two help me clean up the mess.

Y/n and Juillet: Yes sir!

The two fought side by side with Ajax.

Xena appeared suddenly and stabbed through a Villain. She lifted him up and threw him away.

Juillet: Xena! Wasn't Fay with you?

Xena: She went to see if she could get help.

Shigaraki charged for Ajax. Ajax went for a punch but Shigaraki caught it. Shigaraki's quirk activates and Ajax's hand starts to crumble. Ajax punches Shigaraki away with his other hand.

Ajax looks at his now injured hand.

Ajax: That's not enough to keep me down. You are going to have to try a bit harder than that.

Suddenly Nomu appeared behind Ajax and punched Ajax into the ground. The single punch was enough to nearly kill Ajax.

Aizawa suffered a worse fate.

Y/n: I got no choice this time.

Y/n let the second stage activate. His pupil went into a slit shape. A glowing slit formed where his missing eye should be.

Y/n charged and kicked Nomu away. Nomu couldn't catch Y/n, but didn't seem to really feel the blows.

Y/n in head: I can't seem to hurt him. This could be bad.

Y/n got caught by Nomu. Nomu slammed him to the ground and stomped onto his arm, breaking it in half. Y/n screamed in pain. Nomu went to grab his head. But instead heard a roar of rage.

Triton appeared and tackled Nomu to the ground, the whites of his eyes were barely visible.

Triton: I will rip you apart, piece by piece.

Triton began ripping off pieces of Nomu's flesh. Nomu managed to kick him off. Triton landed next to Y/n.

Y/n got on his feet and looked at Triton.

Triton: You okay?

Y/n: As good as I am going be. He doesn't seem to react to physical damage.

Triton: It seems the only way to hurt him is to rip off his outer flesh.

Y/n: We lost our pros. And I'm almost out of commission.

At that moment the front door was blown open. All Might came through the door.

All Might: It's fine, I am here!

All Might couldn't beat Nomu. But the tables turned Bakugo, Todoroki and Kirishima showing up. But Nomu was about to kill Bakugo.

Juillet used her speed to move Bakugo out of the way. But not before Y/n jumped in and caught the punch with his good arm.

Y/n: I got a gift for you, monster!

Y/n began activating his third stage. Fangs began replacing his teeth. His arms grew bigger and more hairy.

Triton: Y/n!

Y/n in head: I still can't control this form. But it won't matter against a monster like this.

Y/n looked closely like a werewolf. He now towered over Nomu. Y/n kicked Nomu away.

Y/n roared and charged for Nomu. Y/n's claws are sharp enough to cut steel.

Y/n's claws cut through Nomu with ease. Nomu manages to land a few punches, but it is useless. Y/n doesn't feel the pain anymore, only rage and hunger for blood.

Nomu didn't feel the pain and was able to regenerate. But there was a limit. Y/n started pushing that limit.

Eventually pieces of flesh weren't coming back to Nomu. And this meant the near end.

Nomu was defeated and Shigaraki got away with Kuro.

Y/n roared. While he couldn't feel the pain of Nomu's blows. His body did.

Y/n fell down and reverted back to normal. More pro heroes arrived and started cleaning up the rest of the villains.

Y/n struggled to get up. Juillet ran up to him and helped him up.

Juillet: Don't worry, it's over now.

Y/n began to breathe heavily.

Triton ran up to Y/n.

Triton: Y/n! We need to get him medical attention!

Juillet began helping Y/n out.

He received over a dozen broken bones in multiple places. His lungs were heavily damaged along with other internal organs. But you can't keep the cyclops down.