Board Thread:Naruto Discussions/@comment-44437908-20200710093820/@comment-44437908-20200713041852

So someone had the kekkei genkai shikotsumyaku. Kaguya clan was known for that kekkei genkai. May be it was like jugo's kekkei genkai and only kimimaro was last member who could control that kekkei genkai without getting blood lust like thing. Kaguya clan had select few members who got shikotsumyaku but only Hashirama had wood release and that's actually odd. No other members of senju clan and no other shinobi had wood release without using Hashirama's cells(the cheat code of naruto world). Moegi has it but how we don't know. So until that information is known to us we can't say anything for sure. And that's why I came up with this theory and I have changed it according the information we have. And wood release is only alive kekkei genkai (elemental) all others are non living things. And giving life to something is power of Yang release.

But this theory has one small problem out of all wood release users Moegi don't have Yang release. She could have it but we don't know her powers yet. So until we know more about Moegi we can't say anything for sure and this theory and the god tree theory are only things that solves the mystery about Hashirama's wood release.