Aoi has an upturned, "punk" nose and vibrant green eyes. Her hair is raven black and long, usually held back in a purple ponytail, and she is built like an athlete, holding herself at the ready to move into action at any time.
Aoi has a strong sense of justice, being willing to strike down whole army units for using violence against innocents.
Specializing as a master swordswoman, Aoi is unmatched with a katana. Her reflexes and reaction time are so effective that she has been known to dodge incoming missiles and projectiles with ease.