J cosplay is one of the real HQ cosplay sites. Already on the starter site you get a good view, what you will get from this site:
Manga girls, Mortal Kombat chicks, some fur, or a maid: They have it all
A downside of nearly all japanese sites due to legal issues: pixelated dicks and vaginas. But its japan - for the pixels you get real japanes girls with their famous sweet-moaning.
Japanese cosplay offers nearly 1000 videos, which you can stream or download and get updated up to 3 times a week - So you will get new content all the time.
You are also able to comment and vote for the content.