I wonder if I feel bored while feeling calm in living with my serious but pale husband. - One day, her brother-in-law, Tetsuo, visits her house ... - She accepts Tetsuos invitation to play with a woman, but she is swept away by him who is relentlessly approaching and has a relationship with her. - Her caress that knows a point different from her husband, Kana repeatedly cums on a piston that digs deep into her vagina. - I wonder if she is stunned by her pleasure that she tasted for the first time. - However, because of her guilty feelings of betraying her husband, she continues to refuse her Tetsuos invitations that come over and over again ...