Kasane Agura

She is a scientist at the academy. Her cautious and sympathetic traits toward the MA-Vess pilots often puts her into conflict with her superior Natsuiri who only sees them as tools for combating the lightness realm. She was in a relationship with Akashi's older brother, Aoshi, before his demise in the lightness realm where because of it, she becomes Akashi's guardian. It is revealed later on that she was the one who asks for Akashi to be on the team but regrets it. She seems to try to use Akashi as a replacement for Aoshi but Akashi can see right through her and gets angry with her.

She still manages to keep the apartment where she, Aoshi, and Akashi used to live, even thought she doesn't live there anymore.

(Source: Wikipedia)