ryuuzaki ichi, gnosis (arknights), gnosis (young) (arknights), arknights, official art, third-party source, 1boy, aged down, bird boy, bishounen, black pants, brown shirt, clenched hands, closed mouth, feather hair, feathers, full body, jewelry, long sleeves, looking at viewer, male focus, multicolored hair, necklace, official alternate costume, pants, red hair, shirt, simple background, solo, standing, streaked hair, suspender pants, suspenders, tachi-e, transparent background, yellow eyes