Brain, the Box, and KH3's Tear in Time • Kingdom Hearts Theory

Theory: Brain and the Box entered Unreality, and how that connects to the Tear in the Fabric of Time.

00:00 • Spoiler warnings
00:28 • Introduction
01:37 • The Tear
02:18 • Eraqus and Brain's knowledge
04:22 • Brain in the Badlands
06:31 • Xigbar and the box
09:03 • The Lifeboat Problem
12:33 • Unreality
14:41 • Conclusion

Video transcript • https://drive.google.com/file/d/1yvC2...

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IF AVA IMPERSONATED BRAIN:

Ava taught the Dandelions how to traverse dreams since she thought Daybreak Town would fall asleep. But Luxu tells Brain that's incorrect; the data world will actually be completely deleted. If Ava later found out the Dandelions would be trapped in a data world, she may have attached WiR's world as a back door for all the Dandelions to escape through.

But in The Cause of It All, Brain says the WiR world "doesn't exist in this world or time." just like Maleficent describes the box, implying that WiR's world is in Unreality. If that's true, then Ava crossed over into Unreality herself to give King Candy the Heartless code to replace Vanellope, which started the WiR glitches in the first place.

Now, Ava and Brain discussed what would happen if you deliberately contradicted the Book of Prophecies, which is quite literally what the Tear in Time is. So it's possible that the Tear in Time was Ava's doing, but either way Brain will still eventually learn about it because Eraqus still knows about it somehow. Eraqus may have inherited Brain's heart similar to Player and Xehanort, but who knows.

But it's possible after Brain left Luxu with the box, that Ava met up with Brain and brought him to Unreality, rather than it being a freak accident that he ended up there. I didn't include this in the video because I saw no point in creating a theory in which it's foundation was built on another unconfirmed theory.