Wanyuudou

"Jigoku Tsushin," a website that only accessible exactly at midnight. If you post a hopeless grudge there, Hell Girl will appear and drag your hated foe into Hell. The rumor sounded like an urban myth, yet it spread among the young people and turned out to be true. The girl's name is Enma Ai. When she sympathizes with a client's grudge, she deems their foe a target, and…

The city of Shinjuku in the near future. A wave of multiple murders has hit, shocking even for this crime-racked city. The victims are always drained of their body fluids... and there is always a sole survivor. Behind the murders stands Ekou. For centuries, he was the Karas, the guardian of the town, but he no longer heeds the will of the city, and is intent on destroying it…