2girls ;) artist_request blush bracelet brown_hair choker closed_eyes collarbone curtains green_eyes headphones idolmaster idolmaster_cinderella_girls idolmaster_cinderella_girls_starlight_stage jewelry kimura_natsuki listening_to_music looking_at_viewer multiple_girls official_art one_eye_closed seatbelt shared_headphones short_hair shorts sitting smile tada_riina train_interior vehicle_interior