Mishio Amano

Mishio Amano acts very much like Mai. She too likes to distance herself from others but for a very different reason. At first appearance, Mishio appears to be very cold hearted and stubborn. But when Yuuichi confronts Mishio about her knowledge of handling 'special' relationships, it all becomes very clear. Mishio then becomes the only person that can help Yuuichi and Makoto on how to deal through the difficult times considering that she too went through the same relationship pains.

(source: ranivus.myanimelist.net)