kozou (rifa), futami ami, futami mami, kisaragi chihaya, idolmaster, idolmaster (classic), 00s, 3girls, arms up, birthday, blue hair, brown hair, clothes writing, dessert, female focus, flat chest, flipped hair, food, food on face, hair bobbles, hair ornament, in the face, long hair, multiple girls, o/, outstretched arms, pie, pie in face, short hair, siblings, sisters, throwing, throwing food, throwing pie, twins