Reiko, who has been married to the Nakamori family as the fourth wife of the womanizer Shigeo. Shigeo died suddenly just two months into her marriage, leaving her suddenly left to raise seven of her sons-in-law on her own. Every day, she was busy with cooking, washing, and cleaning, and in her spare time, it became her daily routine to indulge in masturbation while remembering her late husband. Her sons, who have no way of knowing about her mother's hardships, explode their sexual desires at Reiko.
