They all said I encountered a ghost.
What is a ghost?
If you just go out to make some soy sauce, you will encounter someone who will hit you. If you have a crush on a girl, you will be harassed by someone.
Bai Yan: Mr. Ghost, I advise you to be kind.
Ghost A: What? You are the ghost!
Ghost B: What? The little demon is a real girl.
Ghost B: What? No wonder he was punished by his master every day and couldn't tell the difference between ghosts and demons.
Onmyoji: The four monsters in front of you, stop right there!
Bai Yan: What species am I?
Purpose: To understand one's own class and status