The Naruse couple started living with Seiro, the father-in-law who lives alone. Shimi was genuinely happy about the cohabitation and adored Seiro like her own father, but her husband Kazuaki did not approve of living with Seiro due to his past behavior of neglecting his family for his own amusement. Arguments between Kazuaki and Shimi became frequent, leaving Shimi alone with her sorrow. One evening, after an argument with Kazuaki, Shimi rushed out of the bedroom and sought comfort from Seiro, crossing the boundary of a father-daughter relationship.
