Quick Review:
At Japan 18 Movies, members get themselves access to a huge archive of authentic Japanese porn featuring a variety of scenes, from solo to hardcore fucking. The content is all nonexclusive, but in total there are over 275 scenes available in high-quality downloads. You can also add to that something like 15,000 bonus videos that cover all kinds of different niches. This site is not updating on a regular schedule, but the membership fee is reasonable.