1girl antenna_hair blush brown_hair dress hands_on_own_cheeks hands_on_own_face idolmaster idolmaster_cinderella_girls idolmaster_cinderella_girls_starlight_stage long_hair looking_at_viewer plaid plaid_dress red_dress red_eyes sleeveless sleeveless_dress smile solo starry_background straight_hair tamago_okayu_p tsujino_akari very_long_hair wrist_cuffs