Kazura Mia

A female classmate living next door to Yuugo, she is his childhood friend who takes care of his needs on behalf of his parents who live abroad.

She has a kind and ladylike personality, and a homely side that excels at cooking and sewing.
She is popular among male students due to her feminine and family-oriented personality.
She regularly ranks high in the "unofficial ranking of girls I want as my future wife" and "ranking of girls who would be most devoted to you". Because of this, Yuugo is the constant target of envy and jealousy of others because of knowing her for so long.

Although she has a sights solely on Yuugo, she has not been able take the first step. She is shy about romance and has yet to establish a relationship that goes beyond being family. But because they have been together for so long, she thinks that it is natural that they should be together.

With the arrival of Sumire, who claims to also be Yuugo's childhood friend, her feelings for him start to run wild.