Neat and chaste married woman 'Shiho'.Her husband is a classmate of hers who studied genetics in the same seminar as her college days.Shiho, who had been away from her research since her marriage, decided to help her research again in exchange for her husband's professor recommendation.However, this was her former teacher's trap, and what awaited her was anal pleasure torture where she was restrained and Kikumon was raped in the name of her research in front of her husband. .