1girl, arknights, arm up, bangs, beni shake, bikini, black choker, breasts, choker, cleavage, closed mouth, collarbone, gradient background, grey background, grey hair, hair between eyes, hand on headwear, large breasts, long hair, looking at viewer, navel, red eyes, signature, skadi (arknights), skadi (waverider) (arknights), solo, swimsuit, upper body, very long hair, white background, white bikini, white headwear