Jashinism

A widespread religion that died off centuries ago but was revived when it was featured in the anime/manga Naruto. Followers of this religion must worship Lord Jashin. They believe that after every last heathen is sacrificed, a new and peaceful Earth will be created.

Jashinism is a religion practiced by Hidan of the Anime/Manga Naruto which requires a masochistic love and self harm, and stresses that anything less than death and utter destruction is a sin. I stress that the religion's laws require that you understand the pain of others, therefore giving a person the right to give that same pain. That means that you cannot kill someone unless you are dead or have been killed (which is perfect for Hidan as he is immortal), thus requireng one to harm themself as a sacrifice everyday. Another requirement is that you pray to "Lord Jashin" (litteraly: evil god or evil heart)every day. The symbol worn on a neaklace by Jashinists in that of an upside-down triangle inside a circle (I've been told it is the fire-sign).

Hidan's psychotic relgion that keeps him from dying when kakuzu ass rapes him with his tentacles

An evil god worshiped by Hidan from Naruto

The god worshipped by the character Hidan from the show Naruto. It means "evil god" or "evil heart". Jashin, according to Hidan, expects that all followers of Jashin bring nothing less but utter destruction and death. Always before a fight, Hidan prays to Jashin, asking for a "good kill". If he is unsuccessful, or is not allowed to kill, he prays for forgiveness.

Only applies to those that are from the religion that believes in Jashin. It is a holiday.