Taeyeon is a silent girl with a sad love life background.

Seohyun came from a rich family, polite but need to act mean.

Wooyoung is a rich boy and a Mama's boy.

Yonghwa is a normal boy who really enjoy music. His father is a rich guy but he doesn't know because he was lost when he's liitle kid who can't even recognize his father.

and more cast will be revealed later.