It tells the story, that when a person feels grudge, hatred, aversion towards another person appears Jigoku Shōjo also known as Hell girl, to fulfill his desire to disappear that hated person, and send her to hell, with a condition ...
The price to pay to send your enemies directly to hell is your own soul, which at the time of your death will go to hell too.
If you accept the contract, Jigoku Shōjo will appear and will give you a doll with a red thread in the neck, for when you want the revenge to take place only you must remove the red thread and the soul of your enemy will go directly to hell.
