A father-in-law who must never be interested in his son's wife, Kana... falls in love with her. The father-in-law observes Kana's private life and indulges in fantasies, even peeping at her sex with his son and masturbation. One day, while spying on Kana masturbating, the father-in-law is caught... 'Dad, I knew you were always watching.' However, instead of getting angry, Kana seduces him...
