Pretty sure Amazon Japan only ships books, magazines and BD/DVD abroad, so wallets are domestic only.

Amazon Japan has instruction on how to Order Items Using Convenience Store Pickup

There is a Lawson in Terminal 1 central building 5th floor. It is among the restaurants and food court. You will need to go to the Loppi kiosk and enter the codes from your Amazon order e-mail. The kiosk will print a receipt which you present to the cashier, who will retrieve the package from their locker. See Pick Up a Package at Lawson