Shiho is a pure and chaste married woman. Her husband is a classmate from her university days who studied genetics in the same seminar. Shiho had been away from research since her marriage, but she decided to help him again in exchange for her husband's professor's recommendation. However, this was a trap set by her former teacher, and what awaited her was anal pleasure torture in which she was tied up and violated in front of her husband in the name of research.
