This might have an obvious answer, and I'm just too blonde or something to figure it out, but whatever.
So, do they have to be dead? Could they just be from another world or something, and not there? I kinda sorta want to drag Niyoshi into this (michi's sister) but I don't want to kill her, and I don't want to pull her into Solace. So, living Shadow Spectres, yay or nay?