let me post a spoiler in this...okay. Some people are saying that they aren't too sure if Sephiroth dies and that, since the man in the wheel chair sound exactly like Seppy, that it may be him, only weak and fragile afetr being defeated by Cloud. Also, another reason to think this is somewhat because he's with the SHM and is helping them with what they're doing, but that's a different story..well same story, only different scene