Okada Kanae

She is the younger sister of Chizuru and the aunt of Akira, the main character.

She had a fight with her husband because of her own philandering, and rolls up into the protagonist's house.

Kanae is an S-type teacher who loves to see Akira's face when he is uncomfortable or in trouble, and is a Spartan teacher.

Akira, who has been treated badly by Kanae since he was a child, is the most bitter and afraid of her. When his aunt takes advantage of his weakness....