1girl, arknights, bikini, black_bikini, black_choker, breasts, character_name, choker, cleavage, closed_mouth, dated, detached_sleeves, hair_rings, hair_tie, hair_tie_in_mouth, horns, long_hair, medium_breasts, mouth_hold, nahonanaho, navel, official_alternate_costume, palm_leaf, purple_eyes, red_hair, simple_background, solo, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap, very_long_hair, white_background