1girl, arknights, bikini, black_bikini, black_choker, candy_(pixiv15231759), chibi, choker, detached_sleeves, full_body, hair_ornament, hair_rings, horns, long_hair, official_alternate_costume, purple_eyes, red_hair, sandals, side-tie_bikini_bottom, simple_background, star_(symbol), star_hair_ornament, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap, white_background