Thanks for catching that. Actually it's not referring to a 'person'. I've accidentally fragmented the sentence without context so it actually says this. I'll fix it.
"It is a tale of the Master of Masters and his 6 apprentices that have the ability to see into the future. Records of the mystery of the world are revealed."
Welp, alrighty.
So that's what it says, no hidden hint at another character but the world as a whole.