Hunnnnnnh. Well.
I suppose this is another one of those cases where the series just wasn't popular enough and the author got a deadline to wrap things up.
I got to say, I loved the art, and I loved the originality of this world, with its lords. Buchimaru himself was... kind of boring. The characters surrounding him were more interesting, but it could be that the author just didn't have enough time to let the character blossom the way he wanted.
Overall... a lot of potential. All the ingredients are here and then some, but the way they're mixed in didn't quite turn out. And really, that's a shame.