Three years after losing her husband, Yuki has been raising her son alone. With a small inheritance, she moved to a new town, constantly worrying about her reclusive son. Worried and lonely, she's drawn into a physical relationship by her first real friend. Guilt over betraying her son and the burden of a secret she can't share weigh heavily on her heart. Though she vowed it would be a one-time thing, she can't forget the sensation of a young body, and one after another, new friends begin to appear in her life.