ryuuzaki ichi, confessarius (arknights), arknights, official art, third-party source, 1boy, black boots, black capelet, black gloves, black robe, black theme, boots, capelet, closed mouth, demon horns, full body, gloves, grey hair, hair between eyes, holding, holding weapon, hood, hooded capelet, horns, jewelry, long hair, long sleeves, looking at viewer, male focus, pendant, robe, simple background, smile, solo, standing, tachi-e, transparent background, weapon, white hair