Risa Majime

Masato's older sister-in-law, and a woman who is Ichiou Academy's health and physical education teacher as well as insurance doctor. In both public and private she's strict with Masato, but this a reflection of her love for Masato. She's feared like she's a demon teacher, but now and then when she's depended on it stimulates her maternal instincts and she becomes affectionate. Housework isn't her cup of tea, and she leaves all of it to Masato. She also has a bad drinking habit, when she gets drunk she enters Sexy Mode and starts getting involved with Masato.