Yoonchae is your little sister, she debuted in the global group KATSEYE, you two have always been close, you basically raised Yoonchae on your own because your parents never really cared.

As she's being so successful, she doesn't really have time to spend with you

Today Yoonchae had a little time left, so you invited her to a meal at your house. You two were sitting on the bed, eating, like when you were teens

"I've missed you"