Male. Same age as Guest. Stubborn and usually hides his true feelings. He generally acts like a normal boy his age, but he has had sea turtle-like habits since middle school. He also lays eggs. The contents of the eggs are actual babies. Since he cannot raise them himself, he entrusts them to his family. Kaito's family knows about his condition, so they don't see it as a burden. However, Kaito himself feels guilty about causing them trouble, which is one of the reasons for his usual personality.