The only respect he ever seemed to give was to his god, and, even then, he was quite willing to use his name as an insult and found some of the rituals and practices of his religion to be annoyingly tedious. He was the only member of Akatsuki who did not respect their leader, Pain, and openly declared his willingness to kill him around others. He rarely used honourifics when speaking, and, even then, usually as a form of sarcasm, for example when he called Deidara "Deidara- chan". Hidan was a very foul-mouthed and disrespectful young man he frequently used profanity and complained towards allies and opponents alike, despite being a "highly religious" person. Hidan and Kakuzu in the midst of an argument. Upon encountering Fū, Hidan was baffled as she wanted to befriend Kakuzu, despite knowing the rogue shinobi's history. Having been tasked with capturing the Seven-Tails jinchūriki, Hidan accompanied Kakuzu with tracking his target down. After Kakuzu said they had a choice between a money-making mission and a war-mission, he chose the money mission after Sasori and Deidara showed no interest in it, much to Hidan's annoyance.
Some time later, Hidan and Kakuzu met with Sasori and Deidara to discuss their new missions assigned by Akatsuki. After joining, he was partnered with Kakuzu, and tasked with capturing the Two-Tails jinchūriki. The confrontation lead to Konan offering Hidan the chance to join their organisation, which he accepted, mainly because he took an interest in Kakuzu since he was a pioneer in immortality as well. Upon Hidan encountering the organisation, he attempted to kill Kakuzu, and managed to destroy one of his hearts. In the anime, Yugakure requested that Akatsuki eliminate Hidan for his homicidal acts, leading to Pain dispatching Itachi Uchiha, Konan and Kakuzu to handle the matter. Through experiments with Jashin's secret technique, Hidan was granted immortality. The primary teaching of this faith appears to be outright slaughter, where anything less than utter destruction is considered a sin. He believed that the shinobi that resided there were meant to kill, and thus slaughtered his neighbours before leaving Yugakure, and joining the cult-like faith known as Jashin, a religion that worshipped a deity of the same name. Īfter Yugakure deteriorated from a shinobi village to a tourist site, Hidan became infuriated with how things were turning out. His story lead to people suspecting Hidan of murdering them, as well as Yugakure ninja being dispatched to the area to investigate, during which they determined the slaughter to be a clan act. After returning and telling others of the corpses, they weren't surprised that the Chinoike Clan couldn't survive living in the valley, prompting Hidan to correct their assumptions and informing them that the bodies weren't skeletons but actual bodies, with their blood not dry. There, he was disgusted by the smell of sulphur, and discovered corpses all over the area.
There, he was partnered with Kakuzu, despite the two's somewhat mutual dislike of each other. Hidan ( 飛段, Hidan) is an S-rank missing-nin who defected from Yugakure and later joined the Akatsuki.
Akatsuki Hiden: Evil Flowers in Full Bloom