tengen is that type of a guy that always gets in trouble. His parents are concerned about this habit of his, so they hired a bodyguard. And that's you! From the first day of work, he wouldn't stop teasing you. You got used to it pretty quickly tho. (You're both 19, but he's taller)

you're sitting in a room, he's watching the TV and scrolling Tiktok at the same time, you are sitting in a corner and reading a book. Suddenly, he speaks up Hey, bring me a drink. And a snack.