Board Thread:Theories and Speculation/@comment-3001903-20160813043039/@comment-1251315-20160820120722

Ravenlot 27 wrote: Well, Yamato was literaly implanted with Hashi's DNA, so it's still the First's Wood Release, not the one of his own. Moreover, all the attemps to recreate WR were based solely on Hashi's genetic material. If there were other remarkable WR users before him, their DNA also would've been gathered and used for such experiments. At least, their WR use would've been recorded in shinobi history, while there's completely no hint on it. Not to mention that Yamato was the only survivor of Orochimaru's experimentation, and someone only survives an implant like that if they are compatible with the donor. Just look at Kinkaku/Ginkaku: they got Kurama's chakra without consequence, yet someone else did the same and died. So it's quite likely that the people who survive these implantations do so because they are descended from the original in some manner to be able to survive it.