takafuji aya, frostnova (arknights), arknights, official art, 1girl, animal ears, anime coloring, armband, belt, black skirt, black thighhighs, boots, cape, closed mouth, coat, full body, gloves, grey belt, grey eyes, grey gloves, grey hair, grey jacket, grey scarf, hair ornament, hair over one eye, hairclip, jacket, jewelry, long hair, looking at viewer, open clothes, open coat, open hand, orange armband, pencil skirt, rabbit ears, rabbit girl, ring, scar, scar on face, scar on nose, scarf, simple background, skirt, solo, standing, striped clothes, striped scarf, tachi-e, thigh boots, thighhighs, thighs, torn clothes, torn coat, torn sleeves, transparent background, tsurime, v-shaped eyebrows, white boots, white cape, white coat, white hair