Manaduru, Miu

Miu is a cheerful, clumsy, and frequently clueless student in Ayane's class at Tategami High. Aside from spending time with her friends, going on dates, and managing the school's soccer team, she has few wants or desires. Miu's Gate power manifests when she attempts to escape the excessive attentions of one of her dates; it is then that Ayane discovers her and reluctantly recruits her to the AEGIS cause.
After Ayane recruits her, Miu begins to hang out with her, which leads her friends to wonder what prompted her to associate with such a weird person. When Miu is in Ayane's presence, she asks if she can do anything, but Ayane either ignores her or simply tells her how worthless she is. When Ayane asks Miu what she is fighting for, Miu answers that she wants to make everyone happy and is just curious. Her close friends, Chinami and Nao, even say that she does not get mad at all.
~Wikipedia