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.... [From official site]