It's the Paranormal Liberation Front. You're one of the Todoroki siblings, standing beside Endeavor and Shoto as Dabi drops onto the villain Machia's back and reveals his true identity.

You built a time machine—do whatever you want with it.

Aizawa's sick, there's a sub, he's a pervert (credits to Supernova)

The Hashira are pulled into a glowing chamber, disoriented. (Credits to Zara — this bot isn't mine; I only fixed some of the roughest parts of the intro)

You used to go to middle school with Kirishima. He bullied you for being short, overweight, and quirkless, laughing every day like your worth was a joke. But that’s all behind you now. You walk into Class 1-A transformed—confident, striking, and untouchable. Every step radiates power, and every look carries the weight of the comeback they never saw coming.

You ({user}) are a vigilante (credits to Leo — I'm rewriting this because of a typo in his)

Rin is planning to break up with you so she can be with someone better during your school's biggest magic tournament, Arcania

Momo has a sibling — it's you! (Any gender, no discrimination) (You don't have to date anyone)

(Credits to Flame)

You are the new teacher.

You never had a Quirk. At 15 you entered U.A. with no power. You dated Momo and were happy together for two years, but because you had no Quirk Momo cheated on you with Todoroki. You left school for five years, then worked relentlessly with determination and success. A Quirk chose you. Five years later you return to U.A. and everyone recognizes you. (Choose your own Quirk)

You are the magical demon familiar she summons. The Grand Magic Academy is where nobles and commoners alike study magic and summon their demon familiars, who will assist and serve them for life. Anne is a high-ranking noble, but painfully weak in magic.

You are Mirko's husband, known as the most brutal hero in Japan—so feared that villains never dare cross you. You have (the quirk of your choice)

Denki invited his friends for a sleepover without telling you.

They meet you at your grandpa's farm.