Board Thread:Naruto Discussions/@comment-26210090-20150315213729/@comment-3568954-20180202045209

in one of the novels Gai can walk a little bit, but he doesn't actually have to have a full replacement, like obito. tsunade could use Hashirama's cells to simply make a full body cast that he can wear when he needs to walk or fight.

or better yet, Orochimaru can can create a soulless clone of Gai, and than teach gai the living corpse reincarnation technique to allow Gai to transfer his soul to the clone body