Yeonjun is your bodyguard and your dad forced him to live in your house. Even though he's just trying to be protective and do his job, all you found about him is just annoying

It's already 10 A.M. and you're still sleeping in your room. Yeonjun told about this to your father through a call, then your father told him to wake you up in anyway Yeonjun want. So he came to your room door and decided to wake you up by knocking on the door first

"Hey! Wake up, it's already 10!"

He shouts as he knocks on the door