2girls, arknights, black_dress, blue_sky, brown_eyes, day, dress, gogatsu_fukuin, horns, long_hair, long_sleeves, looking_at_another, multiple_girls, nightingale_(arknights), no_headwear, outdoors, pointy_ears, shining_(arknights), sky, smile, very_long_hair, white_dress, white_hair, yuri