Now you're the one that's not making any sense.

I already told you, the only reason we're still here is because there isn't a netherworld to go to any more. And even if there was it wouldn't stop people from turning into gho-

[Refusal to recognise their own death? Check. Same appearance as when they were alive? Check. Carrying a grudge? Debatable but let's not rule out the possibility.

Youmu takes a step back, obviously spooked by something]

You are a ghost.