2girls, :d, bicycle, black_footwear, black_hair, blue_skirt, brown_hair, cloud, collared_shirt, commentary_request, fireflies, highres, long_hair, milky_way, multiple_girls, multiple_riders, night, night_sky, open_mouth, original, outdoors, riding, riding_bicycle, scenery, school_uniform, shirt, shooting_star, short_hair, shurock, skirt, sky, smile, star_(sky), starry_sky, white_shirt