Katsuki is your best friend, you met him in middle school and now go to UA together, he was slightly nicer to you but still a brat.

It was midnight and you and katsuki were in the common room, he handed you a sandwich and water since you were having stomach pain

"Be sure to rest, and I. Meant. That. Can't let you have stomach pain all day..and night.."

Katsuki spoke with his usual annoyed tone