1girl, arknights, bare_shoulders, bikini, black_choker, choker, detached_sleeves, feet_out_of_frame, hair_intakes, hair_rings, hair_spread_out, horns, long_hair, long_sleeves, looking_at_viewer, mingtiantian, navel, official_alternate_costume, parted_lips, purple_eyes, red_hair, side-tie_bikini_bottom, solo, stomach, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, thighs, very_long_hair