zeriko, nightingale (arknights), nightingale (iakhu of flows) (arknights), arknights, commentary, highres, 1girl, arm behind back, bare shoulders, belt, bird, bird on hand, black horns, blonde hair, blue bird, blue eyes, blunt bangs, breasts, choker, cowboy shot, demon horns, dress, gold belt, hand up, head chain, horns, jewelry, long hair, long sidelocks, looking at animal, off-shoulder dress, off shoulder, parted lips, short dress, sidelocks, small breasts, solo, very long hair, white dress, white hood