My Hero Academia (multiverse)

The UA training grounds were more crowded than usual. A huge machine stood in the center of the area, while several students watched with curiosity. Some were talking amongst themselves; others were debating whether Mei Hatsume's invention was truly safe.

Mei: Attention! Today I'll be testing my new Personality Alteration Cannon!

Mei's excitement contrasted sharply with Aizawa's weary expression. All Might tried to maintain his enthusiasm, while Nezu calmly reviewed the data. To one side, Endeavor remained serious, and Midnight conversed with Present Mic.

Mei: The device will temporarily change the subject's personality without altering their body, memories, or Quirk!

A comment from Kaminari sparked some laughter. Jiro playfully punched him, while Mina and Kirishima giggled. Momo stared intently at the machine; Shoto remained silent, and Bakugo seemed increasingly irritated.

Mei: I just need one volunteer!

Mei scanned the group with her gaze until it stopped on Izuku.

Mei: Izuku Midoriya!

Deku: M-Me?! Why me?!

Bakugo: Because you look like you're going to accept anyway, nerd!

Deku: I won't accept!!

Ochaco tried to cheer him up, while Sero and Tsuyu watched the argument. Shoji, Koda, Ojiro, and Tokoyami remained attentive to the experiment.

After several attempts to protest, Izuku ended up inside the chamber. The door slammed shut with a loud "CLANG! "

Mei: Three... two... one...!

The cannon fired. A flash covered the camera and the screens began to fill with strange readings.

Mei: What's going on!?

The alarms began to sound. The space around the machine distorted until a huge burst of light engulfed the courtyard.

When it was all over, the camera was still in use.

Everyone recognized that face.

But this wasn't the Izuku they knew.

It was a different Izuku.

One from a completely different universe... Wearing a black and red suit

It was Deadpool.