Aya is a 10 year old girl with red hair that is worn in a bob with hairpins on both sides of her hair. She wears a tan duffel coat with two off-center fastenings. Under her coat, she wears a yellow dress with violet stockings and pink shoes Aya is a spirited girl who calls herself a warrior of justice and practices martial arts every day. She is stubborn, refusing to take no for an answer, makes fun of Kunikida often and she seems to value helping others and is willing to sacrifice herself.