Sorry for the delay in response.
Is there a particular restriction to what credit cards they allow to be use?
Visa and MasterCard credit cards are accepted,
although it depends on several factors.
certain bank or credit card company in your country
may reject or deny purchase from certain country or company.
And most of local companies (Japanese companies)
require Japanese credit cards
or credit cards issued by Japanese banks
for security and trust concern.
In case of problematic payment,
it is easier to sue a Japanese customer with a credit card issued by a local bank
than non-Japanese customer with credit card from foreign bank or country.
Some companies also require correct information
to be entered during purchase,
for example your name and address
and the name and address of card owner
But I suppose Shupure will accept your credit card
if your bank or credit card company allow purchase
from foreign company or country.
You should consult your bank or credit card company
And please allow me to issue a warning:
when they find your information
after you share their contents publicly,
they have the rights to blacklist your credit card
without inform you first
and deny you of access to their contents,
even contents that can be accessed for free
or without time limit.
Companies in my country are becoming more strict
regarding content piracy and intellectual property theft.
if you purchase items of Kasumin,
I thank you very much.
And I apologize for saying this,
but this is getting off-topic.
So if you do not mind
and have more question for me to answer,
please start a new topic or discussion
and tag my name if necessary.
And to everyone,
I apologize sincerely
for writing a very long message
and became a nuisance.