"Sir... Cissnei might not even know about Jenova. Or at least, not the Calamity from the Skies we know it... or 'her' as." And a calamity Jenova had become. He twisted to better face Cissnei, his own chopsticks joining Tseng's and Cissnei's on the table.

"Sephiroth was, unknown to most, not just Hojo's child, but his twisted science experiment, too. He was obsessed with Jenova. Sephiroth was, genetically, the son of Jenova as well. And he did NOT take kindly to the information, either. At any rate, when Sephiroth was defeated by Cloud, he faded into the Lifestream, and with him went Jenova's cells and will. She manifested as Geostigma, giving those infected by her a slow and rather painful death while Sephiroth waited to be 'reborn'. Cloud and Rufus were both infected with the Stigma..."

And there wasn't much else that needed to be said about that.