Misuzu is a former dental hygienist who is in her second year of marriage. She is a tall, intelligent, beautiful wife. She married a dentist at the hospital where she used to work, and is now a full-time housewife. Since their marriage, her husband has been sexless, citing his busy schedule. To fill the void in Kokoro, she started dating on an extramarital site, where she met a sex friend, who trained her, and her body has become sensitive to perverted play. At her sex friend's command, she applied to appear in an adult video as an NTR play, so she did whatever she wanted with him.