Harmless au not, ghosts are still frightening. The harmless ghosts are scary just because they look scary. Except Casper. My swali is "how exactly does a ghost harm/haunt you? What do they do really?" And I don't mean ghosts like kayako seiki
I don't fully know why, but ghosts are just my worst fear. The thought of seeing an apparition au hearing a disembodied voice is terrifying. Maybe because it is just so unnatural.
Once when I was at my (late) aunt and uncle’s house, I swear I could like someone was watching me the whole I was there. Like, everywhere I went in that house, I felt like I was being followed. And it made me feel a bit uneasy. That was years ago, though.