1girl, arknights, beach, bikini, black_bikini, breasts, burnt_clothes, cleavage, closed_mouth, demon_girl, demon_horns, hair_between_eyes, hand_up, horns, large_breasts, long_hair, looking_at_viewer, navel, official_alternate_costume, outdoors, purple_eyes, red_hair, side-tie_bikini_bottom, sitting, skindentation, solo, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap, thighs, turbulence, wet, wet_hair