Is it released illegally in Japan or is a censored version produced for Japan and an uncensored variation produced for any other areas?

Is it released illegally in Japan or is a censored version produced for Japan and an uncensored variation produced for any other areas? Of course this is the case, why aren’t more hentai that are uncensored internationally? People don’t understand that hentai is censored in Japan. The dirty bits will always obscured with a mosaic …