Board Thread:Naruto Discussions/@comment-27924806-20140711165647/@comment-28861328-20140711174912

Transmigrants are not just descendants. As pointed out by Hagoromo, they are specifically the people in which Asura and Indra's chakras have reincarnated into. Black Zetsu mentions that there have been many throughout history, but Hagoromo specifically states that Madara, Hashirama, Naruto, and Sasuke are Transmigrants. It is clearly a unique designation and I support the creation of such a classification.

The term "transmigrant" comes from "transmigration", a belief that souls are in an endless cycle of reincarnation. It is a real term.