Hakua is a 14-year-old, second year middle school student at Seikain Jogakkou. She is a genius in fields such as engineering, math, and science, and there was even a special lab built specifically for her use at the academy.

She has a very reserved demeanor, showing very little emotion and speaking very little. Despite this she is prone to eccentric behavior, that involves her unconsciously stripping off her clothes and recording things such as complicated mathematical formulas anywhere she can (walls, the floor, etc).