1girl, ass, ball, blonde_hair, blue_one-piece_swimsuit, blush, bow_hairband, day, full_body, green_eyes, hairband, holding, holding_ball, idolmaster, idolmaster_cinderella_girls, kawaseki, kneeling, looking_at_viewer, looking_back, medium_hair, one-piece_swimsuit, outdoors, poolside, sakurai_momoka, school_swimsuit, shoes, smile, socks, solo, sunlight, swimsuit, uwabaki, water, white_socks