Rule 34 Dev - 1girl 2023 arms_up child dated dress fukuyama_mai grey_background highres idolmaster idolmaster_cinderella_girls long_hair looking_at_viewer marine_(confeitokobo) monochrome open_mouth outstretched_arms polka_dot polka_dot_dress ponytail scrunchie short_sleeves simple_background smile solo star_(symbol) traditional_media|18922616154