柴田一
from Jigoku Shoujo (Hell Girl)
A former journalist who now earns money by blackmailing celebrities with evidence of their scandals. He began to investigate Jigoku Tsuushin merely out of interest, but becomes more heavily involved once he realizes that it's more than just a rumor and people are actually being dragged into Hell. Furthermore, his daughter Tsugumi seems to have a mysterious connection with Enma Ai that allows her to see anything significant that Ai sees. Hajime is shown to be a caring and kind man who has a good sense of humor and cares a lot about Tsugumi Shibata (Hajime's daughter), despite his shady dealings with celebrities. He holds a feeling of guilt for Ayumi Shibata's (Hajime's wife) death as he believes he was responsible for it. One of his most prominent traits is his firm belief that vengeance is wrong and shouldn't be acted on; this belief is what motivates him to try to stop people from acting through the Hell Correspondence.

Jigoku Shoujo (Hell Girl)
Have you heard of Jigoku Tsuushin (Hell Correspondence)? Those with a powerful grudge may only access this mysterious website at midnight, allowing them to enter anyone's name and have that person be ferried straight to hell. Ai Enma, the Hell Girl, will not judge whether or not the chosen target deserves punishment; she will merely exact revenge on them for you. Not much is known about this young girl other than that she swiftly carries out her tasks with the help of three straw dolls. There is just one catch, however—as payment for carrying out such a request, the user must condemn themselves to an afterlife in hell.