Requirements to be an Anbu Black Op I am curious as to how is an Anbu chosen, what are the requirements, and does every one of them have like a certain backstory that makes them special or different from the normal ninjas (like how Yamato is able to do Wood style jutsu's and how Kakashi was one of the youngest Jounin in the village), or are they just trusted by the Kage's?
Anbu are recruited directly by the Hokage (or, in case of Root, by Danzou). There's no mention of a hard requirement, but generally excellent shinobi are chosen.