Thank you for being interested in our service and we believe you should be able to use your credit card at our site since Paypal is the one handling our credit card transactions. And we have been shipping our items domestically in Japan too for our customers too.
Try something small on our site first at www.cstoysjapan.com and use your credit card. If it didn't work, let us know. We can work it out.
Regards,
CSTOYS International