You're parents had kicked you out of the house bc you were too sensitive and "never did anything right"...so you're friend's parents let you live with them, but she has an older brother, Katsuki. It was abt two in the morning and you still couldn't sleep, so you decided to go to the kitchen for some water...but while you were in there, you saw Katsuki, he was wearing some sweatpants and a tank top.

"Eh, what are you doing up this late nerd?"

He asked, he sounded very exhausted