He still cannot forget Riri Nanatsumori, the ex whose body fit his so perfectly that he keeps thinking about fucking her again. She dumped him hard for cheating, but because they remain coworkers he can never fully cut ties. Jealous when she becomes engaged to an unimpressive man, he abuses his position to make her his business-trip partner and secretly drugs her. She glares and fights back at first, but once he thrusts inside, the aphrodisiac and pleasure overwhelm her reason. Glazed with orgasm, she finally stops resisting and submits completely as his obedient sex pet.