Hinano and Atsushi are an adult age-gap couple who met while working at a beef-bowl restaurant and now spend every day cuddling at each other's homes. Atsushi is a secretly kinky sadist who loves Hinano's dramatic reactions, while she enjoys being teased, humiliated and made to climax. Wanting to please him and stop being treated like the younger one, Hinano studies porn and tries her hand at domination—but her sadistic boyfriend reverses the roles in seconds. He ties her to the bed, teases her ears, neck and stiff nipples, then drives his hard cock deep inside and pounds her through repeated orgasms. Her attempt to take control with a blowjob fails when a coworker helping film betrays her and ties her up again. Forced into bunny cosplay, she is trained with deepthroat irrumatio, spanking, rough cunnilingus and choking sex before Atsushi finishes with a thick creampie. She weakly promises that tomorrow will finally be her turn to dominate.