So. I was talking about the Haruhi Light Novels just now and having read all, I found out its on a Hiatus since 2012. The last volume came out in 2012 in Japan, in 2013 the author said that he is working on the next volume and that was 5 years ago.
I doubt it will come out at all and you will never know what the intended ending was.
Something similar happened to X by Clamp. It is on a "Hiatus" for 15 years now or so or longer. In the meantime Clamp wrote some sequels to Tsubasa Chronicles and xxxholic, that werent popular and wrapped up quickly. So I am guessing we will never know what the real ending is.
Highschool of the Dead is another example. It was on hiatus for some years and the author died last year.
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Do you know any other shows/manga/anime/movie-series or books that were abandoned by the author? And what are your thoughts on it?
I think, if the author really doesnt want to continue the series, he could at least maybe explain what his ending was supposed to be if he had one in mind.