Okay so i was thinking of the two brains theory and there was something I was thinking about, if there really is two brains then who's the fake? I genuinely don't have any evidence for this but it struck me that Ava not only is responsible for having Brain hold the BoP and try to change fate, she also has the ability to disguise herself as other people as shown when she appears as any one of the other foretellers to test the strength of the player. Who's to say she isn't the other Brain?
Yeah I'm on the same page as you that I definitely think this could be Ava! I even think it's possible that if fake Brain isn't her directly, that it could at least be a program (like data Riku in Coded) produced by her-- though admittedly, that would take much more time to code a program than just disguising herself with magic in a flash.
But either way I believe Ava is involved because I don't think Ava knew the Daybreak Town after the war would be a data world doomed to be deleted so it would take down the Darknesses, but rather thought (and taught the Dandelions) that Daybreak Town would instead fall asleep. So upon discovering that it would be data (I assume for now during/after her fight with Luxu), I think it was she who connected Wreck it Ralphs world to data Daybreak Town so that all the dandelions could escape before the world got deleted. But I also think this means she didn't realize the Chirithies themselves would be able to save the Dandelions by protecting their sleeping hearts as Dream Eaters.







