User blog comment:IamJakuhoRaikoben/Chapter 415: And It Shall Become Your Will To Live, Review./@comment-118.136.67.179-20150111025256/@comment-46.169.23.172-20150111103639

Lol I remember him saying that he has ideas for at least two more arcs after this one (mind 'at least') and that he want FT to run at least for ten year (which would give us two more). But since I'm as lazy to find sources as previous commentators I guess everyone can still entertain their own version :P