3girls, black_legwear, blonde_hair, bow_(instrument), brown_eyes, brown_hair, crescent_moon, gradient, gradient_background, hat, instrument, keyboard_(instrument), light_purple_hair, long_sleeves, moon, multiple_girls, music, pantyhose, playing_instrument, purple_eyes, shooting_star, siblings, sisters, skirt, skirt_set, smile, thighhighs, trumpet, violin, white_legwear, yellow_eyes, zettai_ryouiki