In Naruto, the Akatsuki was a criminal organization filled with S-ranked rogue ninja. They were hired like mercenaries, but their main goal was to collect all the Tailed Beasts. Hidan was the Akastuki's immortal forbidden technique user. He could not die even if his head was removed. This means that most justu are ineffective against Hidan, but there are a few jutsu that can beat him and his immortality.
Source：https://www.cbr.com/naruto-jutsu-that-can-defeat-hidan/
