no, i wish it was that easy!
here is everything you need to do to create not only your japanese account, but your european account as well. if you dont live in the us like i do, then this shows you how to make your us account as well. every region has their own exclusives sometimes that other regions dont have, such as the wrestle kingdom video and the upcoming ninety-nine nights demo so i have all three accounts and can get demos from all thee regions, its pretty neat!
http://www.gamersreports.com/article/19/