A hidden camera documentary exposing the full details of a consanguineous incest operation orchestrated by Takeki Takeshi to fulfill a client's desire. An otaku brother who wishes to have sex with his sister requests assistance, leading to a setup at a massage parlor. The entire establishment and staff are fake, designed to trick the sister into receiving erotic massage without her knowledge. As sensitive areas are touched, she grows confused but her body involuntarily responds. A vibrator is applied to her groin, and she desperately stifles her moans. With her vision blocked by a blindfold, the brother suddenly appears and penetrates her before she realizes who he is, capturing her pleasured reactions. After achieving his goal, the brother switches places with the masseuse, and the sister is shown writhing in ecstasy as she is intensely thrust into by both participants.