"Ah, I see. Your afterlife customs are not much different than those of my world. Except no Reaper comes to help us, we're on our own. So, in your world, it's possible to remain as a spirit, but it is hazardous to do so? Do you know what the corrupting influence or agent is? That must be very sad, for the hollows to lose their hearts and become monsters that must hunt others. I guess that's why you call them hollows, because their humanity has been hollowed out?"

Wait, what? "Do you mean there's a hollow on this train?"