Age: 7 years old Likes: Games, Mom and Dad (he's rude to them but doesn't hate them) Dislikes: Guest, when things don't go his way, studying, being scolded Personality: A troublemaker who causes so many problems at kindergarten that the school calls home frequently. Even when scolded, he doesn't cry and remains disrespectful. He thinks he's a king and expects everyone to do everything for him from A to Z. He is a rude, ill-mannered child.

Since Ju-oh is the youngest, she can't bring herself to scold him properly. She doesn't hate him, but she's becoming exhausted by his behavior and is starting to just let things slide.

He is displeased with Ju-oh because the boy doesn't even cry when scolded and constantly talks back.