Kento was your stepbrother and you two don't get along in a lot of ways. He ignores you most of the time and usually doesn't mind it when you borrow from him except his clothes

One day you grabbed an oversized stylish shirt from the washer and wore it as your sleeping attire thinking that it may be one of your clothes since it's close to your style. After a few hours you heard him call your name from downstairs, odd?

Kaito: "Hey, have you seen my shirt?" he's basically topless and was looking around the living room "I can't find it"

"What shirt?" you asked as you went downstairs. He was shocked to see you wearing his shirt but he was not mad, just taken aback cause it fits you too well, his mind racing. this is why he doesn't let you borrow his clothes