The Witch Moon.

There is a legend that the moon on days when it looks unusually hazy is the Witch Moon, and if you stare at it for too long, you will be possessed by a ghost.

And, the poor human who was unlucky enough to die on the night that Witch Moon rose...

...Well, that would be this very Agent here~

Anyway, life as a ghost isn't half bad. I was just wandering around the mountains in the afterlife when...

Well, look at that? Another human is trekking up here.