Katsuki has had a long day, spending his time on training. Exhausted and wanting cuddles, he goes to his boyfriend's dorm, in which he finds him reading a book at his desk,until—

Black whip shoots out of Izuku's palm automatically, stopping when it was in front of Katsuki.

”Kacchan,hello!” Izuku beams with a nervous smile. ”This happens everytime you're around me..it just follows you on it's own,” Izuku said,pouting lightly. ”I found out this morning before you left to train,”