User blog comment:Ncduru/Biggest Mysteries of FT/@comment-31.132.65.53-20150822104940

THE 100-YEAR QUEST - probably the biggest left out mystery of FT. It was described as the greatest challenge in the magic world and that Gildarts tried to complete it but to no avail (he even run into Acnologia during it), but what it is?, what's the objective of it? was never explained.

THE ONE MAGIC - we may (or may not) get some information on it soon. I'm particularly interested in what it is and why do everyone who pursue it get screwed over so hard.

THE UNDERWORLD - is this an actual place, or just a figure of speech? Are there more demons?