1girl, arknights, black_collar, black_dress, black_thighhighs, breasts, cleavage, collar, demon_horns, detached_collar, dress, horns, large_breasts, long_hair, purple_eyes, red_hair, saiko_(saisaka), smirk, solo, surtr's_golem_(arknights), surtr_(arknights), thighhighs, torn_clothes, torn_thighhighs, v-shaped_eyebrows