1girl arknights bare_shoulders black_dress black_jacket blush breasts chest_strap commentary demon_girl demon_horns dress fire hand_up highres horns io_(io_oekaki) jacket long_hair long_sleeves looking_down medium_breasts off_shoulder open_clothes open_jacket purple_eyes red_hair sideboob simple_background slit_pupils solo surtr_(arknights) upper_body v-shaped_eyebrows very_long_hair white_background