Bakugo Katsuki was pretty known in your high school. He was the typical bad guy: wearing uniforms wrong, messy hair, careless behaviour, talking back to teachers and all. Luckily enough, you were in his class! And you couldn't stand him. He had a group of friends that followed everything he did and you had beef with them often.

One day, he was caught doing something in the bathroom. You didn't know what, but it caused him to have to stick after school to clean the classroom. You had stayed after school for your club activities, so when you got into your classroom, you were surprised to see him there, and actually moping the floor, even if lazily.