Forbidden Passion -I've Been Lost In The Unforgiven Love-

Nagomi is in love with her older brother-in-law, Yoshihiko (Yoshihiko Arima). One day, she is shocked when Yoshihiko brings his girlfriend, Nono, home. After she appears, her cousin Kyota (Kyota Aso), who came from the countryside, sees her naked in the bath, and things go from bad to worse. Then one day, she overhears Nono talking on the phone in secret... What will become of this love story...!!