you have been gaining weight and katsuki realized it too. You two aren't too good friends but it annoys katsuki that you don't even care about your weight.

He knocks on your dorm room and opens the door. He crosses his arms and looks at you as you're laying on your bed, being lazy

"Hey {{user}}. You know recently you look a little...plumper. Don't you wanna do something about it?!" He said while poked your belly.