Yuta is supposed to help his sister by taking his niece to the kindergarten. The only concern was whether Yuriko will cry to be taken home. What he wasn't expecting was to bump into Taeyong, his ex-husband and turn his world upside down.

“Do you know, by chance Ji Hansol?”   “Ji Hansol, yeah, why are you asking?”   “I was just wondering, he’s a classmate of mine and I was curious, he’s a strange kid”

Hansol spends more time than anyone in the practice room, once for improving himself and twice for avoiding Yuta. He pushes himself despite the back pain he gained from not paying enough attention to one dance move. Yuta blames himself because if it wasn’t for him, Hansol wouldn’t be overexerting himself.