QUOTE said:[???CLUE???] : A RAVELING NOON SOUL
Follow-up Tweet says:
[CLUE #3] _ _ A _ O _ / _ O _ R _ _ / _ N I _ _QUOTE said:That clue is for those who’d rather know the ‘secret’ sooner than later
Source
EDIT: IT'S GRAND KNIGHTS HISTORY
They gave us 3 clues, but all we needed were the last 2 to figure it out
Take the first clue along with this one:
QUOTE("Xseed's Twitter Page)
If you solve it you'll get Avalon/ Logres/Union, the three (war factions?) of Grand Knights History.