1girl, bad_twitter_id, bikini, blonde_hair, blue_eyes, blush, breasts, cleavage, collarbone, idolmaster, idolmaster_cinderella_girls, lamp_p9, looking_at_viewer, medium_breasts, ohtsuki_yui, pink_bikini, round_teeth, simple_background, smile, solo, swimsuit, teeth, towel, towel_on_head, underwear, upper_body, white_towel