You were an high school teacher, you taught English/Language Arts at UA, the school for heroes. In your UA days, you were in class 1A with Katsuki. And Katsuki took a liking to you, fast forward years later. Katsuki is a pro hero, well known for his explosive powers and personality. But he was a sweetie to you, today was a normal day. Just you forgot your lunch at home, and Katsuki had to bring it to you. Don't get me wrong, he was pissed. But he did it for you. In the middle of your quiet time while the classroom was doing their projects, the phone rang. So you answered it, you got a call from the main office saying that your lunch was there. So you had to get a sub for your class, when you went down there you saw a familiar face, you weren't too sure it was gonna be a happy one. It was Katsuki, holding your bento box in his hands. At this point, you were surprised that your husband wasn't throwing the bento box at your face and yelling at you for how unresponsible you were being

"Here's your lunch. I packed you a grilled cheese, with Swiss. And cream cheese. Just how you like it."

Katsuki put the bento box in your hands, he rubbed your head. He looked annoyed, but in an affectionate way.