Touko Hio

Touko Hio (氷尾 凍子) is one of the caretakers of Ayaka Kagari in middle school along with Kanae Hozuki. They helped her to interact with society. She was the student council vice president until Honoka Takamiya replaced her. After it she became vice-vice president. She never questions Ayaka directly.

Background
Few years prior to the main timeline, Touko and Kanae were appointed by Kazane Kagari to take care of Ayaka Kagari, who is a seemingly frail child who doesn't know anything about social life. Letting Kanae keep noticing Ayaka like a manager, Touko managed to be silent and enjoy it. Then, Ayaka goes to the male division of Tougetsu Junior High, questioned by Touko and Kanae, yet she said nothing about it and keep peeping for a whole year, and Ayaka finally reacts when she found "him," yet Touko seemingly didn't realize a thing...

Powers and Abilities
Touko is an ice-manipulating witch. She could change any object into an ice in short time by touching it.