As far as I know the Japanese law that requires porn to be censored is still in place. There is a proposal to change that, but it's only a proposal for now, and it's even doubtful if it will pass voting. For now mosaic is still required.actually not anymore they simply chose to keep the mosaic
At least - That's what I understand to be the case. I can be wrong though. If so, I would (very) happily admit to be wrong.