With around 300 episodes, I'm able to notify that A single Piece is de facto big in Japan. I've witnessed all The existing episodes. And might't get more than enough of it.
2021 update: I have been over the fence about deleting this since it's so poorly created, I was 17 at time of composing rather than this website a local speaker, and my opinion on one particular piece and anime generally speaking has altered substantially for that even worse.