Minami lives happily with her beloved husband and daughter, but it has become a habit to masturbate night after night.And it was the same for her son-in-law Tsuyoshi, who spent his days peeking at her and comforting herself.Minami, who was fascinated by his decachi ○ port, continues to tempt and disturb his heart every time she happens.Her son-in-law can not resist the invitation of such her mother-in-law, and the two of them devour pleasures day and night.