BBAN-531 A chance reunion with a sweetheart from her school days. A lesbian lover who becomes addicted to extramarital sex to make up for lost time. Ruu Totsuka and Kanna Misaki.

Two years after getting married, Ruu, who has been living alone in Tokyo since her husband was away on a long business trip, meets her old lover Kanna by chance in town one day. Understanding Kanna's circumstances, he has no choice but to welcome her