katari biumi, hatsune miku, kagamine len, kagamine rin, kaito (vocaloid), kamui gakupo, megurine luka, meiko (vocaloid), vocaloid, 3boys, 4girls, blonde hair, blue eyes, blue hair, blue scarf, dress, formal clothes, frills, grand piano, hair ribbon, instrument, long hair, multiple boys, multiple girls, piano, pink hair, ponytail, purple hair, red dress, ribbon, scarf, short hair, twintails, white dress