1girl, arknights, bad_pixiv_id, bare_shoulders, bikini, black_bikini, breasts, closed_mouth, cowboy_shot, detached_sleeves, evening, from_side, horns, large_breasts, long_hair, long_sleeves, looking_at_viewer, looking_to_the_side, official_alternate_costume, purple_eyes, red_hair, see-through, sideboob, signature, smile, solo, sunlight, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap, very_long_hair, zhihuigugudegezi