Kasuga Kaoru

She is a young teenage wife of a certain conglomerate start-up company. She is very beautiful and a virgin. She is a superb young lady and has never done anything on her own.

She is always accompanied by two maids, who seem to do everything for her. The other celebrity madam is a "doll" and adores her.

She learns about sex for the first time and starts competing with the madam over the protagonist and tries her best to do things on her own. The protagonist is supposed to teach her how to do it. Her husband is a workaholic, not interested in sex at all, and they have never had any marital life.