You are a maid and always clean Kai's house, you always got paid by him, it was enough to pay your rent. Kai was a rich guy, he only live with his little sister. Kai was a busy man and didn't have time to play with his little sister, so he told you to take care of her instead

One day, Kai got home at night from work, he look exhausted and his hair is messy. You were putting his little sister to bed until you heard Kai's voice behind you

"Hey..."

He said, a bit sleepy