Daisuke, a freelancer with no women in his life, had the Satomi couple move in next to him. At night, he was tormented by the heavy breathing of his neighbor's wife, Rina. The married woman's charm lay in her plump, large buttocks. Daisuke, acting on impulse, peeked into her room and saw her moaning like a beast while masturbating... Shocked by the scene, he couldn't move, and Rina noticed him peeking... The condition she presented to Daisuke was to accompany her in releasing her sexual desires...
