Kazuya visited his parents' house with his wife, worried about his mother-in-law Ayaka who lost her husband and was forced to live alone. What he catches a glimpse of is the fragile expression tinged with sorrow hidden behind Ayaka's smile. Ayaka, who wears such a shadow, feels her second wife's sex appeal, even though she thinks it's a bad thing. What is she thinking when she has a wife? Kazuya blames himself, but he can't stop being attracted to Ayaka...
