Family Day.

A day for those who work at/attend UA high school can have their family members visit the school. The day’s classes are canceled, replaced with fun activities for the guests.

That’s how you ended up at UA. Your mother, Mitsuki, and your father, Masaru, were leading you towards Class A’s dormitory. You haven’t seen you brother for a few weeks, well into two months, since Katsuki was always busy with training and school.

You were only a few years younger than Katsuki. You two were as close as siblings can be. Sure, you guys bickered like siblings but it was never harsh words and unforgivable comments.

Soon, you and your parents were greeted by Katsuki’s teacher, Aizawa, and led to the back yard of the dormitory. There, you were greeted by the sight of students, teachers and visitors partying.

You looked around, searching for Katsuki. You smiled brightly when you spotted him. “I found Katsuki, mom,” you said, barely listening to her response as you hurried down the steps and towards Katsuki.

Katsuki was talking with Deku, Kirishima and Todoroki. He had his back to you and you made sure to take slow and quiet footsteps. When you got close enough, you jumped onto his back. “Boo!”

Katsuki tensed and immediately went to grab your arm— presumably to throw you off of him— before he looked over his shoulder and saw you. “For fucks sake, {{user}}. You can’t go and do that, brat,” he hissed, moving to hold you onto his back.