I came across an interesting anime series recently, It's called HELLGIRL. It is a series of stories about a web site. If someone wants revenge on a person they get on the internet and contact HELLGIRL at midnight. This little girl, she looks about 8 with bright red eyes, yes red, and a pretty flowered kimono appears to them. She hands you a simple straw doll with a red ribbon attracted. She explains that you take the doll, pull off the ribbon and the person you curse will be send to Hell immediately. There is one tiny detail, once you pull the ribbon releasing the demon you have entered into a covenant with HELLGIRL. a small symbol will appear on your chest and when you die You will then go straight to HELL! I found the stories very interesting, some of the people sent to hell were very bad but the person tormented by them who were often innocent victoms now were also condemed. It is a lose lose situation. The stories are very good with several plot twists. Check it out