Taocha said:
The battle takes place at the same time. :3
No one ever told Aqua that if she destroyed the X-blade she would destroy Ven's heart.
I faintly remember we already had an excessive discussion about this in another thread. However, it's now still fresh in my mind since I just finished Aqua's scenario.
First off, Aqua didn't manage to actually
destroy the x-blade but only damaged it with her "empowered" keyblade.
The x-blade is struck by Aqua's blade and takes on it's
incomplete appearance. Vanitas collapses but the x-blade still keeps floating there quite for a time instead of directly shattering.
I now tend to believe during this time it is that the battle between Vanitas and Ven takes place.
Vanitas actually tries to do
three things then:
1. complete the Fusion to enslave Ven completely and finally get rid of his resistance.
2. repair the damage Aqua had done to the x-blade.
3. finally complete the x-blade since their first fusion was incomplete.
In fact Vanitas managed to take over Ven's body and probably soul, as well as invade his heart, yet Ven's will and mind continued to resist that's why the x-blade was actually incomplete.
This leads later to the fact that the hearts connected to the x-blade are not completely destroyed (they would if the weapon would have been complete) but
only gravely injured.
It was really the x-blade's destruction what maimed Ven's heart (and by extension Vanitas's, no matter if he was reabsorbed or not) that badly, only the incompleteness of it prevented the full destruction of both hearts connected to it.
CrystalMaiden said:
If Ven's heart is destroy, how he manage to open the door to LoD during Final Episode?
For that bit, as already said, his heart is gravely injured, not completely destroyed.
As for how he managed to open it:
Well, to summon a keyblade one needs a heart (exception, nobody of a keyblade wielder, but this doesn't apply here), so that means Ventus still had his badly maimed heart inside him at that point.
This is also not contradicted by Yen Sid, who just said his heart is "asleep" and it is as
if the heart is gone. He doesn't say it as a fact.
If Yen Sid can actually sense if Ven's heart is injured and how severe it is, that is matter to speculation.
However back to the point with that door to light.
It happens just after Aqua contemplates where to take her comatose friend, and there I assume Ven, just for once mobilizing his last ounce of strength, actually summons the blade to show Aqua the way where he would like to rest.
Sometime later then, Ven already in his sleeping chamber, his heart finally succumbs and due to the severity of the injury must leave its body because it can't go on any longer. This great pain and sadness is then felt by Sora, who reaches out and then accepts the heart's plea to shelter it.
So, between the actual sustaining of that injury and the heart seeking refuge with Sora passes at least a bit of time.