Thread:Chix777/@comment-26116199-20150224181325/@comment-26116199-20150226145859

He's a Jashinist, so I got an idea for him to assimilate KG(specifically the Lava and Explosion Releases) by means of a blood ritual—where he consumed their hearts as a sacrifice to Jashin, and gained those abilities.

As for a the Wood Release, his father was a Senju, and a nephew of Hashirama himself. Therefore Akuhei himself has Senju blood. Realising this, he obtained Hashirama's DNA and experimented by means of several rituals. Eventually after much tinkering, he found a way and managed to obtain the Wood Release.