Ever since he first laid eyes on Hana, his subordinate's wife, Department Chief Kaneko had been deeply obsessed with her sensual charm, leering at her beautiful body with lustful intent. One day, feigning illness, he manipulated the situation so that Hana would have to nurse him—and finally fulfilled his desire. By thoroughly ravaging her body, he began to completely dominate her mind. From then on, he started training her in secret, away from her husband's watchful eyes. Though Hana resists fiercely at first, Kaneko's relentless and skillful caresses gradually break down her defenses. As her long-dormant desires awaken, a new, twisted relationship takes root.