User blog comment:Kogath/Monster Hunter Frontier G5 Discussion/@comment-2194133-20140629214056/@comment-4009941-20140701032729

Payment methods are

Credit Cards(A cheap way) such as VISA, Master Card, and JCB

Electronic money such as, convienient stores in japan, BitCash, WebMoney(JP), Rakuten Edy(and mobile version), Docomo, and "au かんたん決済"

I only used Webmoney and Paypal Credit Card.