Board Thread:Theories and Speculation/@comment-3001903-20160813043039/@comment-732150-20160913053435

Plecotus wrote: Omnibender wrote: Asura reincarnations or not.

Aside from Hashirama and Naruto (who couldn't have had the Wood Release because plot) we don't even know name of any of the previous reincarnations of Asura, much less their abilities. Wood Release as Hashirama displayed it was something that earned him renown through the world. Rinnegan only happened in Madara after Hagoromo, and it still became the stuff of legends, so people obviously knew about it, even if they didn't necessarily believe it was real. If someone else had manifested Wood Release at some point, people would have known.