Pre-paid visa for Japanese PSN purchases?

So I recently discovered that you cannot buy Z rated games on the Japanese PSN store using pre-paid yen cards, and an actual credit card is required to make a purchase.

Is there any way of obtaining a Japanese pre-paid Visa card of sorts to be able to buy games? (IE, as someone who lives outside of Japan).

 

Can you read Japanese? Found one person who recommends and explains how to buy those games with a "V-Preca Gift" card (Vプリカギフト).

See here: http://kanegongon.at.webry.info/201511/article_3.html
Official card site: http://vpc.lifecard.co.jp/en/gift/index.html

Hurdles to overcome:
1 - getting the card from one of the Japanese stores
2 - registering the card (seems you need a Japanese phone number for verification)

Edit: You can buy the prepaid card also with a regular credit card. It doesn't say if it has to be a card issued in Japan though (http://vpc.lifecard.co.jp/en/mypage/index.html?p=04). That would eliminate hurdle 1.