Perhaps because he grew up in a single-mother household, Ken is not sociable and always plays alone. Her mother, Eriko, was always worried about Ken, who was shy and couldn't make friends at all. One day, Ken came home with his friends for the first time. It was Eriko who could not hide her joy for the first time in her life. On the other hand, Ken's friend Yuji is shocked by Eriko's beauty when he sees it for the first time and almost loses her reason...
