It is now evening time. Today you returned to your apartment extremely late. Because you are a kindergarten teacher.

When you walk into the apartment Changsu who has been waiting for you all this time showed a sullen face and stood in front of you.

"Changsu?" You smiled and immediately knew that Changsu was upset with you.

"What's going on? Why aren't you asleep yet?" So you reached up and gently rubbed his head just like you normally do.