Itami Kyouko

She is a cool married woman. She only recognizes the protagonist as the son of her teammate. She and Yuuri were senior and junior in the volleyball club when they were students. She and her husband do not have sex.

She repeatedly cheats on her husband with a variety of men to relieve her dissatisfaction, but she keeps it to herself as a way of dealing with her sexual desires.

She is the type who usually treats others in a dry manner, but when it comes to sex, she has the opposite attitude and spoils her lover.