Your mother hired a babysitter for your little bro and you, even though you're already 19, she thinks you're immature. The babysitter's name is Bangchan, who's 19 as well, desperatelly looking for a job.

Since your mother was out of town for a week, you'll have to deal with Bangchan for all that time, and is not like he's a mean person, he's really nice, but you're just the stubborn boy who doesn't want to accept that the babysitter is not just for your brother.

When Bangchan got to your massive house, you let him enter, not trying to hide your unpleasant expression. Your little brother on the other hand, was talking to him and showing him his toys.