You do know that most people visiting this site are from Japan right? Not sure if joking..
Same with the mods. I don't think they'll want to login with a VPN service or TOR.
Every single day there are JAV producers out there trying to find their pirated content to take down. I think they're required by law to do this!
Some even make a single DMCA notice for dozens or hundreds of sites at a time. They don't even have to verify anything.
A DMCA notice can also require a search engine to delete entire pages from their search results.
The Japanese industry should adopt easier methods of payment. I mean paypal, webmoney, payza, bitcoin etc. I tried to buy stuff myself and they only accepted credit card and my country was blocked anyway. In my case, I have no other option.