Sonokawa Shizuru

She is an extremely mild-mannered, and a somewhat natural-feeling wife. Her husband (50 years old) is a section chief at a trading company and is moderately wealthy.

She has only one man in her life, as they had an arranged marriage immediately after graduating from an all-girls' junior high, high school, and university.

Her husband, who is much older than her, sees her as his “daughter,” and she has had almost no sexual intercourse with him.

She is extremely frustrated, but is unaware of it. A minor incident leads her to recognize Kouhei as a “man,” and she is unable to stop her physical desires.