niban (puka 0507), ohtsuki yui, idolmaster, idolmaster cinderella girls, highres, 1girl, ass, bikini, black bikini, blonde hair, blue bow, blue bowtie, blue eyes, blue skirt, blush, bow, bowtie, breasts, brown shoes, cardigan, cleavage, holding, holding phone, jewelry, long hair, looking at viewer, loose socks, medium breasts, necklace, one eye closed, open mouth, phone, pink cardigan, pleated skirt, shirt, shoes, skirt, smile, socks, swimsuit, thighs, waving, wavy hair, wavy sidelocks, white background, white shirt, white socks