Asaba Aoi

Aoi is the PE teacher in Mihaya Highschool and is Yuuma's homeroom teacher. She is both Yuuma and Konami's mother. A kind and loving woman, she still loves both Yuuma and Konami like her own children and also likes to dote on them, despite having no blood relation to them. She adopted the two of them when their father (who was also Aoi's mentor) and her husband suddenly died.

She's a good mother at home and loved by her students at school, however she's quite easily flustered and can be clumsy when she's in that state, which often makes the students fawn all over her cuteness. Even though she's a mother and a widow, she's still in her 20s, often shocking others when she tells them about it. She's very close friends with Nao, as both of them were Konami and Yuuma's father's students.