One of the top two pilots in the 801st, Miyuki is considered to be a "goody good", always being polite, friendly, kind, and not the kind to break the rules or get in trouble. She was placed in the 801st after she struck a superior officer with her hand, though Mitaka talks about the incident rather differently.
Miyuki and Mitaka do not get along at all and are polar opposites in terms of personality. Despite their rivalry, however, they manage to work together when the time comes and make an excellent team. Miyuki originally thought Isurugi was a pervert (mostly due to the fact he accidentally saw her bathing naked). However, she eventually grew to love him and competes for his affection alongside Mitaka.