If there is one franchise that never goes out of style in Japan, it is certainly Pokemon. With new video games, anime series, manga, trading cards, and, of course, plenty of merchandise, Pokemon is one of the most famous exports that Japan has ever created. Internationally and domestically, it is always relevant, and regularly celebrated. While you can regularly find some kind of special Pokemon event in Japan whether you're just visiting or living there, none are quite as big as this one.