Rule 34 Dev - 1girl arm_rest black_cardigan blush brown_hair cardigan green_eyes green_necktie hand_on_own_cheek hand_on_own_face highres idolmaster idolmaster_cinderella_girls light_smile looking_at_viewer necktie school_uniform shibuya_rin shilka_(amur_shilka) simple_background solo white_background|22376144466