[ Rei's been there, done that. So it isn't all that entertaining anymore. Forcing a childhood friend who loved him so much to kill him? That was fun -- at the time. But now? It's just old news. ]

I suppose. But the build up isn't that interesting when it's just a bunch of strangers doing it. Having strangers kill each other is a lot easier than say, having lovers kill each other. Or families. Or things like that.