Amano Misao

Japanese name:

天野美紗緒

Misao is Akira's great-niece. She is a very shy girl who loves to spend her time with Akira, whom she often refers to as onii-chan. She cares for him deeply and it's very common to see her cooking for him or worrying about him. Sometimes, Misao says mau-mau, which doesn't have an actual meaning (this may be a "cute" form of speech the creators added for her to please fans of cute anime girls). Misao looks very young for a 6th grader.

Voiced by: Fukuen Misato

Wikipedia