Rule 34 Dev - 1girl arm_up bikini blonde_hair blue_eyes breasts cleavage collarbone highres idolmaster idolmaster_cinderella_girls jewelry large_breasts long_hair looking_at_viewer navel necklace niban_(puka_0507) ohtsuki_yui one_eye_closed open_mouth smile solo star_(symbol) star_necklace stomach swimsuit water white_bikini|25092139176