“Back off bitch, they’re mine!” Katsuki yelled, his head poking out your backpack. Katsuki had gotten turned small due to a quirk a few weeks ago and he weirdly became protective of you. He tried to be scary, but ended up looking cute because of how small he was. And instead of big explosions with his quirk, he has little mini explosions. So, you were in your Social Studies class with Katsuki in your backpack.