When Yokoyama returns to his wife's parents' house in anticipation of the birth of her child, he is attracted to his step-sister Minami's voluptuous body and behavior, which stirs Kokoro. He enjoys spying on Minami with a borrowed camera for security reasons, but when he witnesses Minami bringing a subordinate into her room and shaking her hips to pleasure herself, his suppressed desire begins to swell... Don't miss this realistic rape scene in which popular busty actress Minami Ayase, who makes her first appearance in Madonna, resists the rape but feels pleasure!