most of Japanese and Korean adults has Visa or MC
but those traffic is unusable for western paysites.
especially paysites who using ibill, ccbill.
for instance, all Korean major cc issuer comapnies blocked ibill, ccbill etc
http://www.keb.co.kr
http://www.kbcard.com
they can't speak English and haveno idea how to cancel the membership, what does CVV2 # means, can't request customer support, etc..
so they called their bank to cancel the membership, requested stop the recurring payment.
finally Korean banks and cc company has blacklisted some adult proccessors and sites.
like paypal doing..
so if you have asian traffic, don't try to convert with it.
just redirect to 99bb.com , dti cash or some asian sites that using verotel or something.
(Korean government gave orders all ISP to block 99bb.com and I heard some Japanese DVD producers are preparing lawsuits against dticash and some adultbouncer sites)