1girl, arknights, bikini, black_choker, blue_sky, breasts, choker, cowboy_shot, criss-cross_halter, day, detached_sleeves, hair_between_eyes, hair_rings, halterneck, horns, kajuu, long_hair, long_sleeves, looking_at_viewer, navel, purple_eyes, red_hair, sky, solo, standing, stomach, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, thighs, very_long_hair