You need to understand one thing about JAV. In this country of Japan, they don’t really have too many laws against porn, but they have one major one. It is that you can not show the pure unadulterated cocks and pussies of the world. You have to blur them out or pixelate them to make it so that you can’t see what they are actually doing. It’s quite unfortunate. Some people speculate that is why the people of Japan have had to get pretty freaky in other ways in their porn movies, making it a totally unique genre that is very special.
On Net JAV, each porn movie seems to be a full DVD. Each update has a full cover of it that looks like it is from a DVD. That is good because you can get a pretty good idea of what is happening within the movie. Maybe it is one that is about a hot girl with giant tits, which is pretty rare for the Japanese, or maybe it is all about Asian blowjob girls. Whatever it is, you won’t be able to tell from the text on the image because that will be in Japanese, but the text on the page is pretty self-explanatory with English explanations of what you might find in these movies. Some of the translations are pretty funny like “Dense Service of the Best Lover.” But, you get the idea.