I agree. Looks almost like a root problem.This tree does not look at all healthy. It looks almost like it's trying to throw out as many shoots as possible to keep itself alive, but has no energy to actually make any of them viable. I would maybe just leave it alone and feed it well, and cross my fingers. I might consider putting it into a humidity bag for a bit.
Maybe you should reach out to someone who might be able to help you save this tree.
I agree. Looks almost like a root problem.
I am wondering what Kimura nursery does to it while being "boarded". Do they just water it? Or do other things?