Red XIII is stuck in a tree (get it? because he's like a cat!) but its no ordinary tree its an EVIL TREE (haha farfetcehd I know. The heck is an evil tree who would come up with that) and you can only save him by sacrificing one character who isn't Aeris because she was already stabbed. To death. By Sephiroth. With a sword.
Stabbed
Who do you sacrifice?