[ Vanitas knows... He knows that there are some holes because the brat had given too much of himself away. Little bits of him had left with Roxas, Xion, and Ventus. ]

Because the brat and I were already connected the day we were born. When Ventus and I were torn apart, Sora decided before he was even fully born to help fill in the gaps that I left behind.

[ There will be more to that in a moment. ]

Of course he's struggling. He's had Ventus with him his entire life and now that's gone. Xion and Roxas, whom both resided in his heart as well, now have their own bodies so they don't need him.

[ Vanitas folds his arms over his chest. ]

Your bond with him would be effected, yes. However it isn't repairing your heart. It's repairing mine.