Japanese App Store Account. Contrary to what you might think, you cannot simply change the country or region of your account by switching the flag at the bottom of the featured or home page. Once itunes or the app store is open, if you haven't already, click sign in and enter your apple id username and password.
Lightning fast search search from over 180,000 dictionary entries and 58,000 example sentences and see the most relevant results as you type. It has translated app store review guidelines and this week released japanese subtitles to its developer conference videos from the summer, setting out its latest thinking on optimal app design. Each country has its own itunes music store.
Open the app store, itunes store, or ibooks store.
Sign out your current itunes account. Sign out your current itunes account. Now select japan as from the countries listed. Sign out of your itunes account if you are signed in.