Kirigaya Yuuna

She is a quiet, neat, gentle, and good-natured member of the rhythmic gymnastics club. She is a very attentive person and is well-liked by her club mates and classmates. She is an old-fashioned type who wants to devote herself to only one person whom she loves. She does not like to fight, and does not want to win by using someone else or using them as a stepping stone.

She is very sensitive about her body and feels a strong sense of guilt about it.

She has a faint yearning for love, but has never experienced it. A popular boy confesses his love for her, but she has no feelings for him and is at a loss for how to respond.
Her parents died when she was young, and she is a struggling student, but she does not let that bother her. Since she lives alone, she is good at home-style cooking.

She is attracted to the protagonist after he saves her from a pervert. She confesses her feelings to the protagonist, and unbeknownst to herself, she is about to enter the path of slavery.