[Being so wrapped up in his own failure and the nightmares that have quickly followed it, the consequences left in his wake Sephiroth knows nothing of. He's heard that some people were thrown out of the Tower, that something happened with Zo after Sephiroth's consciousness had been ripped apart by him, but now-]

Outside of the Tower. [He surmises. His brow deepens at the thought of it. He'd been so sure that getting out of the Tower would mean that he was free but if someone had died out there-

-no. Sephiroth can't allow himself to believe that, but sure enough the thought percolates around in his conscious thoughts all the same. He steels his jaw, just shy of biting at the inside corner of his mouth.]

Outside of this Vessel, all we are is dead already. Ghosts.
He must not have been strong enough.

[Which is why Sephiroth had gathered as much power as he was able to get his hands on, before making the attempt.]