I have been warned of three things since I was a child - don't answer when someone calls your name at night. When passing by the mountain temple, don't look back. Don't even go to the well and look at your own shadow.
I never believed it. Until that year I returned to the village for funeral. The paper man in the mourning hall turned his head. Inside the coffin, there was the sound of nails scraping against the wood. In the well at the entrance of the village, someone poured blood into it in the middle of the night.
And I saw another version of myself in the well. From that day on, I learned that there is a group of people in this world who specialize in dealing with these "things".
They don't catch ghosts. They - deal with the rules. But later I discovered that the scariest thing was not the well. But - this well has been "used" by people since a hundred years ago.
And I am probably the last one - the chosen one.