Fitch-exclusive porn actress Rena Momozono plays an adult cousin targeted by her reclusive relative Takeru. While her parents are away on a business trip, she spends a summer week in the countryside and helps look after him. Rena innocently looks forward to the visit, but Takeru has long desired her and plans to use a special aphrodisiac to turn her into his personal sex toy. Unaware of his scheme, she is secretly dosed day after day as her body and mind gradually change. By the end of the week, the drugs have stripped away her resistance and she helplessly seeks Takeru's cock like a needy cat, reduced to complete sexual submission and repeated creampies.