Summary
Just watched some of KH Union X’s ending.
https://www.khinsider.com/news/KINGDOM-HEARTS-Union-X-Finale-18484
Alas there is no translation yet available so I haven’t the slightest clue what is going on yet according to https://gamefaqs.gamespot.com/boards/718920-kingdom-hearts-iii/79487420 the Master of Masters wanted all 13 Darknesses(as in the 13 shards of Darkness from the χ-blade) to possess the Foretellers and the Union Leaders.
Seems Luxu is actually Brain’s future self(explains the similarities between Braig and Brain). Since Brain lost all memory upon arrival his return to the past must have been orchestrated by the Master of Masters which probably means the other Foretellers are Time Travelers(most likely Xehanort’s fellow classmates).
Someone also kidnapped Xehanort from one of Skuld’s relatives(who has Silver Eyes rather than Golden) after the Player latched onto him and took him to Destiny Islands and eventually dropped dead of old age.
Why a kidnapper would go so much trouble to take Xehanort to that Island and never leave is beyond me. The only thing I can come up with is that he might be a Program sent by the Master of Masters to fulfill the Book of Prophecy.
In any case I suspect Xehanort is Eraqus’s Brother and thus Ephemer’s grandson. The fact that Ephemer showed up in a Spirit Form in front of Sora implies Ephemer either did not live long or he and Skuld used the Lifeboats after having a daughter. Considering Subject X has black hair according to the Character Files that is quite likely.
Once Luxu(who has none of Brain’s Memories due to already using the Lifeboat once) has ensured Skuld has gotten back her memory and exposes her to Ephemer’s Scarf Ephemer will probably reappear.
Since someone needs to remember the person using the Lifeboats the only reason Elrena and Lauriam were restored was because one of the 13 Darknesses remembered them and was present.
They were vessels of 2 of the 13 Darknesses allowing them to become Heartless! This of course means KH3 resulted in Xehanort absorbing said 2 of the 13 Darknesses getting them done in during the KH3 Re:Mind DLC when they and the 11 fragments of Xehanort’s Heart separated from him and merged into that copy of Armored Xehanort!
Marluxia and Larxene’s change in personality and regaining themselves upon being defeated in KH3 must have been the Darknesses possessing them being expelled!
Edit: Translations are now up on the page:
4 of the 13 Darknesses are trapped in the Data Cables left to disperse into nothing, 5 of the 7 Deadly Sins have possessed the Foretellers during the Keyblade War and were pulled to the present by Luxu, Vanitas is attached to Ventus and 3 more Darknesses(Pride, Lust and one of the Non-Sins) are left unaccounted for…
I wouldn’t be surprised if the Master of Masters was already consumed by Pride while Lust is the one who possessed Master Xehanort who in turn implanted a piece of himself and Lust into Luxu.
Quadratum turns out to be you guessed it: The Reaper’s Game. The Master of Masters outright mentions it to be the Afterlife. Luxord is looking more and more to be a Reaper.
The Master of Masters showing up in Quadratum means that he probably offed himself(or had Maleficent off him considering Pete implies that he was the one telling Maleficent about the Black Box) in hopes of taking out Pride. That probably means Pride is in Quadratum.
Spirit Dream Eaters seem to be the Souls of Dead Keyblade Wielders merged with their Chirithy in Sleep thus explaining why the Master of Masters claims that a Spirit turning into Nightmare is a sign of a Keyblade Wielder turning to Darkness: The Spirit-turned Nightmare is the Keyblade Wielder who turned to Darkness!
The Master of Masters in the end wasn’t considering the possibility of a Chirithy Owner turning to Darkness without merging with their Chirithy as that only means the Owner becomes a Heartless while the Chirithy disappears. He also wasn’t delving into the matter of Nightmare Chirithy which is the result of extracting Light from Darkness and just throwing the Darkness away!
Anyone want to bet what Maleficent(who sees Evil as a separate Cosmic Force from Darkness) will do once she discovers that the 13 Darknesses losing their form allowed them to create the Heartless? If she gets any ideas to strip the 7 Lights of their form she could potentially create Light Heartless!
Of course if Hades(whom Nomura intends to do more with) gains any knowledge of the Noise in the Reaper’s Game he could gain an army aligned with Death(along with an army of Nightmares born from Spirits consumed by Darkness in the Limbo known as the Realm of Sleep)!
