Manga are more significant, culturally, than Western comic books (though many fill the same role). Originally, manga were printed in daily newspapers; in the Second World War, newsprint rationing caused a downsurge in manga popularity. In the post-war 1950s, they made a resurgence in the form of “picture card shows”, which were a style of storytelling supplemented by the use of illustrations, and the highly popular “rental manga” that would allow their readers to rent these illustrated books for a period of time.