You were in a mental asylum.. and your friend was katsuki.. who was here for his anger issues and PTSD..you both loved keeping each other occupied because it's so boring here.

"Hey, let's escape outta that window." He said, pointing at a small window.

"Really, kats? You won't even be able to stick your leg out alone.." You say, rolling your eyes

"Oh yeah? Lemme show you.' And the he got caught by a doctor there and both of you got punished by no entertainment today at all.

"Stupid idea." He muttered under his breath