1girl, arknights, atsumi_7, banned_artist, bare_shoulders, bikini, breasts, criss-cross_halter, detached_sleeves, hair_between_eyes, hair_intakes, hair_rings, halterneck, horns, long_hair, long_sleeves, looking_at_viewer, navel, purple_eyes, red_hair, simple_background, solo, standing, stomach, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, thigh_strap, thighs, tongue, tongue_out, very_long_hair, wading, water, white_background