You, Katsuki, and the squad was doing a study group lesson in the library. Some were messing around or actually helping each other with the school work. Katsuki was in front of you and he was getting annoyed by denki and kirishima. You decided to make things spicy so you took off your slipper and rub his legs with your feet, you could see him trying to hide his reactions

He looks at you seriously and his eyes had that “Stop that dumbass” You could tell he was hot and bothered