Sephiroth had hated his original black wing so much for how it had come about, but in his insanity he had not only embraced it, but had decided to create six more. He's still trying to get used to the idea that he can use them for good. He had been doing quite well with that idea until his deepest fears and guilt and grief had started to be exploited again. But keeping the wings out is his way of doing what he can to rebel against Efrain's attempts to drag him all the way down again.

"Alright," he agrees. "Good luck."

Hopefully they will gather enough people to really help out. He can't really think they won't.