Despite being long-time friends, Ritsuro and Ken possess contrasting personalities. Optimistic Ritsuro remains concerned for his friend, whilst Ken's life is submerged in the shadowy realm of prostitution after he abandoned high school. However, the discovery of Ken's romantic interests results in an unconventional love triangle between Ritsuro, Ken, and Ritsuro's girlfriend Moeko, leaving Ritsuro oscillating between the two.