This is the real story that I experienced.
One day, I played with a friend.
It is a game of trying to see if a spirit really exists.
That play is a game called Charlie Game.
The spirit did not come out and my friend has returned.
However, the real fear is about to come.
I noticed a terrible thing.
Charlie game is because it was a game to call spirit.
After my friend got back ,,,,. When I thought that a noise sounded, the sound which walks petapetapeta.
In my head, it was only that the spirit really exists.
From that one year, I do not know the identity of that footstep.
Actually I fainted after that, I did not know what happened later.