Kazama Yumiko

Teacher at Seitei Gakuen, in charge of Japanese.

She is Takaya's former homeroom teacher and Akane's mother. She is an exemplary teacher who is passionate about education and always puts her students first.

Takaya, a former student of hers, unexpectedly confesses his love to her, but Yumiko is already married. Her husband is Shiro Kazama, a teacher at another school, and they already have an adolescent daughter.

However, Yumiko could not shake off Takaya's straightforward romantic feelings, by the time Takaya graduated from the school, he had completely taken her husband's place in her heart. And now, despite being a married woman, her voluptuous body and youthful beauty,
makes the students, who are conscious of their older age, strongly aware of women.

When she meets Takaya again, she finds that he still has the same affection for her as he did back then, she is attracted to Takaya, and her heart is troubled as she tries to be a “wife”, a “mother”, a “senior teacher”, and a "woman".