User blog comment:Rtys8/Wearing out again...../@comment-4738138-20140821152723/@comment-16526045-20140822132815

This is just speculation based of what i think from all the info i have available.

Frankly,here's what i think: It's like Fate Stay Night,where all routes are canon,but because every route covers a different perspective,thus is it impossible for almost anyone,save Mother Johanna,the one with implied omniscience of sorts to understand how everything really started.

But unlike Fate Stay Night,the worlds are connected to a certain degree,because that's because of the wish from Kakeru and previously,Verard.

1.That's probably why the original scenario except after Kakeru kills Liselotte for good was mostly static with little changesIt was because Verard's original wish was still in effect until the Eye of Aeon merged with Demiourgos ,fulfilling it's directive of letting Verard be with Lisette,thus fulfilling Verard's wish.

Given that the Fragments of the Void are implied to be facets of Liselotte,it's not too far fetched to assume Kukuri's fragment is Liselotte's Purity,which could be as good as Lisette,or better,what inner good Liselotte still had even after being as twisted as she became.

(This was implied by a voiced line from Liselotte speaking from Takahisa when he went on his rampage after Yukiko brought back to his senses,only for the real ultimate cause to trigger him back into a rampage,thus why Yukiko still had to kill him,because he was clearly controlled and had no hope of ever being himself anymore at that point.)

2.This whole multiple Kakeru ending up with someone ending was a result of that.

Kakeru's wish was probably to be together with his friends and the one he loved,but since due to still needing to fulfil Verard's wish, Demiourgos could not overide this and bring back everyone like how it was before the Red Night.

Thus,no matter how it goes,Kukuri and Shiori will only survive if Kakeru chooses them.

So,really,it's the titular Sin,Damnation and Atonement Girl and the slogan of That Eye/Love shall change Fate at work here.