Student Counselor at Yuiga's school and one of Rizu and Fumino's ex-tutors. She is a pink-haired individual whose clumsiness (ie. misplacing her keys and a messy house) and being reckless (ie. Can drive at "normal levels" in which it frightens Yuiga) is part of her overall personality. Being a person who isn't close to her parents, she was once a professional skater until she abruptedly stopped due to the fact that her parents had the expectation of being a skater when she only wanted to be a teenage schoolgirl. She tends to give out tough love by sending out mixed signals. She is also abhors cockroaches and had asked Yuiga to stay with her while getting rid of the cockroach with the promise of doing anything for him. Even mentioning cockroach would make Mafuyu scared that she has to interrupt anyone from saying the animal outloud.