Misawa, Chitose

Chitose has always been in love with Haruhiko, her sister Mariko's ex-boyfriend. Three years later, she meets him again when he becomes an evaluator teacher at her school. She pulls herself together and confesses her feelings. From then on, they lead a secret, very passionate relationship. Since Chitose's parents are often not at home, she spends her time increasingly at Haruhiko's apartment. Their biggest concern is that he might get tired of her, so she repeatedly assures him that she belongs to him body and soul. Each time, he receives the hoped-for confirmation that she is the only one for him. However, she slips further and further into dependence on him because she is ready to do anything for him and to let others do things to herself, and Haruhiko exploits this fact.
Even at school, Haruhiko cannot stay away from her, even though the risk of being discovered is particularly high there. Chitose is especially well-known as a star of the swim team. The supervisor of the swim club is Tagami-sensei, with whom Chitose gets along extremely well. Tagami-sensei is himself in love with Haruhiko, which Chitose knows nothing about.