User blog comment:Kaido King of the Beasts/Chapter 819: Ally to Blwo Down Kaido's Ass/@comment-10543621-20160310235718/@comment-5398287-20160311122230

No one knows about it? Moriah's group clearly did, Doflamingo was implied to have figured it out on his own...I'm sure the more intelligent, and likely powerful, pirates know about it. The average citizen, no, but they don't know lots of stuff either.