takafuji aya, hoederer (arknights), arknights, official art, 1boy, anime coloring, armband, beard, belt, belt pouch, boots, brown boots, brown gloves, bulletproof vest, clenched hands, cloak, closed mouth, curtained hair, demon horns, facial hair, full body, gauntlets, gloves, green belt, green cloak, green jacket, green pants, hand up, horns, jacket, knee guards, long hair, looking at viewer, pants, pointy ears, pouch, red eyes, red hair, simple background, solo, standing, transparent background, v-shaped eyebrows