Yeah I was reading this cause I wanted to finish all the Hokuto mangas out there but this one is sadly left unfinished. Hopefully someone picks it up in the future.
the ryuken v raoh fight didn’t make much sense compared to the original manga because Raoh shouldn’t know about the technique when he kills Ryuken. The story was nice though, a good homage to the previous successor of Hokuto Shinken.
the colonel looks like souther but it wouldnt make much sense for them to be related cause his fist is obviously not nanto, it seems like a hokuto (maybe even Seito Gekken) heresy of some sort.