1girl, o, ban_(puka_0507), blonde_hair, blue_eyes, blush, breasts, cleavage, collarbone, idolmaster, idolmaster_cinderella_girls, large_breasts, long_sleeves, looking_at_viewer, ohtsuki_yui, simple_background, single_bare_shoulder, solo, sweater, upper_body, white_background, white_sweater