hideki nagamachi, the idolmaster cinderella girls, the idolmaster series, multiple girls, japanese clothes, kimono, hair ornament, black hair, short hair, fireworks, open mouth, smile, hair flower, holding hands, flower, festival, one eye closed, closed eyes, blonde hair, brown eyes, brown hair, floral print, blush, 5girls, 6+girls, yukata, grey hair, blue hair, red kimono