Harada, Mayu

Mayu Harada is the younger of the two Harada siblings, and Mika's junior.

[Spoiler] Mayu is initially portrayed as a homophobe who had already discovered that her older brother was gay; however, after meeting Mika, and as the story progresses, she realizes she is confused about her own sexuality, and eventually admits to being gay and having feelings for Mika. [/Spoiler]

[Spoiler] Later on in the manga, Mayu confesses to Mika and gets turned down, but develops a stronger - albeit platonic - relationship with her as a result. [/Spoiler]