1girl, arknights, arm_support, ass, bare_shoulders, bikini, black_bikini, black_choker, choker, day, detached_sleeves, dutch_angle, from_behind, hair_rings, horns, leaning_forward, light_rays, long_hair, long_sleeves, ocean, official_alternate_costume, outdoors, red_hair, solo, sunbeam, sunlight, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), suyi-j, swimsuit, swimsuit_cover-up, water