1girl, arknights, armpits, arms_up, black_panties, breasts, choker, cleavage, criss-cross_halter, crossed_bangs, hair_between_eyes, hair_intakes, hair_spread_out, halterneck, horns, kuhnowushi, light_blush, linea_alba, long_hair, looking_at_viewer, lying, medium_breasts, navel, on_back, open_hands, panties, purple_eyes, red_hair, side-tie_panties, solo, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, tongue, tongue_out, underwear, very_long_hair