That's why I was wondering. Because I know Enoshima isn't the type to kill; she's the type to instigate the "need" to kill in someone else. If that shadow, or whatever it is, is grabbing killers, will it only affect those who just simply kill?

Or would they include the ringleader who masterminded it? Of course, I'm using Enoshima as an example since she was the first person I thought of, but it's possible that someone else might have thought of this too, right?