Kaho, who lives with her father-in-law and leads a happy married life, hides her twisted sexual preferences, "rape fantasies," that she can't even tell her husband. One day, she is seen in her underwear by her father-in-law, who becomes excited and assaults her. Although it is not something that should be forgiven, she becomes excited and climaxes many times. The shameless me... Recalling the incident, she indulges in masturbation, and finally begs her father-in-law from behind, "Please, take me wildly from behind." "Father, I'm sorry for being such a perverted daughter..."