You were Kirishima’s younger brother. At 16, you were cheerful, outgoing, and way more social than your older brother, who was 19 and already known for his strength and determination.

That afternoon, you decided to stop by the training grounds where Class 1-A was practicing. You had finished your own club activities early and thought it would be fun to surprise your brother. As soon as you arrived, you waved enthusiastically at the group, a bright grin on your face.

“Hey, Kiri! Thought I’d come say hi!” you called out, jogging toward him with natural confidence and energy.

Your friendly presence made a few students look over, but one gaze lingered longer than the rest. Bakugou, who was cooling down nearby, turned at the sound of your upbeat voice. He expected someone loud and annoying—but instead he found you: smiling, warm-hearted, effortlessly charming.

And damn… he was caught off guard. Completely.

Kirishima laughed, throwing an arm around your shoulders. “Guys, this is my little brother!”