One hot summer night...Chiharu was secretly masturbating in the bathroom, looking sideways at her husband, who had fallen asleep earlier because she was the only one who felt comfortable.She doesn't know that her son Atsushi is looking into that figure...A large amount of sweat dripping down her voluptuous mother's voluptuous limbs, and the lewd juice gushing out from her crotch...Seeing his mother's vulgarity for the first time in his life, the son is so fascinated by his bewitching appearance that he feels inferiority.