So I'm trying to buy hentia off of one of these two site:
http://sokuyomi.jp/product/sinjaukura_002/CO/2/
https://www.cmoa.jp/
The thing is that while with the first site I was able to make one purchase it has sense said that my region is invalid and won't let me use my credit card anymore. The second site is asking for a Japanese credit card. Dose anyone have suggestions on what I should do?