Height: 145 cm (4'9")
Home Town: Ooarai, Ibaraki Prefecture

A member of Anko Team and is the team's driver. She is a quiet and gloomy girl who falls easily asleep, and hates mornings. She is also weak to certain conditions.

She is late to school everyday but is top of the class and can learn things almost instantly just by reading. She is a genius with a high level grade performance. But, due to her habitual tardiness in the morning she has insufficient credits, and so in exchange for credits, she is pursuing Sensha-do. She is childhood friends with Saori Takebe. Mako lives with her aging and strict grandmother Hisako Reizei.

Mako lost her parents in an accident when she was in elementary school. According to Saori, Mako fought with her mother shortly before the accident and wishes she could be able to apologize to her.