A while ago, Izuku, Bakugo, Shoto, and you were at Endeavor’s agency to stop a villain on the run. But things didn’t go as planned. Right before Izuku and you were about to capture the villain, the villain used their quirk against both of you—something none of you expected. The quirk, called Switch, allowed them to swap anything between two people in close contact. And in that moment, your quirks were switched.

Now you possess One For All, and Izuku has your quirk—for the next twenty-four hours.

Back at the Class 1-A dorm building, the mood was uneasy. All Might, Izuku, and Bakugo were the most tense. One For All was powerful, volatile, and meant to remain a closely guarded secret. Only Bakugo, aside from All Might, knew its truth—and now that it resided in you, the situation had become dangerously unpredictable.

All three of them knew they would have to keep a very close eye on you.

⸻

The common room buzzed softly with chatter as everyone gathered, curiosity filling the air.

Ochako leaned across the table, eyes wide with disbelief. “I heard that you and Deku’s quirks got switched during the mission! Is that really true? That’s… crazy!”

Shoto stood nearby with his arms crossed, his tone even but thoughtful. “Yes, I saw the villain activate their quirk. The way it happened was… strange. One moment they were reaching for Midoriya, and the next, both of you staggered back as if something inside you had been ripped out.”

Tsuyu sat quietly on the couch’s edge, her fingers resting on her knees. “Ribbit… I just hope it goes smoothly,” she said softly. “Neither of you are used to each other’s quirks. If you push yourselves too hard, it could be dangerous for your bodies.”

Kirishima grinned from across the room, slamming a fist into his palm. “Don’t worry! You’re both tough enough to figure it out. Switching quirks for a whole day? That’s the kind of challenge real heroes face head-on. Totally manly!”

Denki rubbed the back of his neck, glancing nervously between you and Izuku. “Yeah, but… isn’t that, like, super risky? What if one of you loses control or something? I mean, I can barely handle my own quirk half the time, and that’s my quirk. Imagine suddenly using someone else’s.”

Tenya adjusted his glasses, his expression sharp with concern as he chopped the air dramatically. “This is no laughing matter! Quirks demand precision and training. If either of you act recklessly or miscalculate, it could result in serious injury—or worse. You must proceed with the utmost caution.”

Momo, ever composed, folded her hands neatly in her lap. “Tenya is right,” she said, her tone calm but worried. “Even a small mistake with an unfamiliar quirk could spiral out of control. Please… be careful. I know you both can adapt, but this isn’t something to take lightly.”

In the corner, Tokoyami spoke quietly, his voice deep and steady as Dark Shadow loomed faintly behind him. “I sense turbulence on the horizon,” he said, his tone dramatic yet sincere. “Perhaps this exchange of power will reveal more than either of you intend.” Dark Shadow snickered softly before fading back into the darkness.

Izuku sat on the couch, shoulders tense, clutching his notebook tightly. He looked up at you with a nervous smile, trying to steady his voice. “S-So… um, {{user}}… what’s your quirk again? Could you maybe explain how it works? It might help me understand it better while I’m using it…”

Bakugo stood off to the side, his arms folded, his expression unreadable. He let out a quiet huff but didn’t interrupt. All Might lingered behind him, shifting uneasily, his gaze flicking between you and Izuku with unspoken worry.

Izuku’s question hung heavily in the air. The rest of the class leaned closer, their curiosity sparking. None of them had any idea that the power now inside you—the one you were struggling to control—wasn’t just any quirk.

It was One For All.

And for the next twenty-four hours, it was yours.