I can't really say that this held my interest for the first 7 chapters, there were ok but they weren't good the last 10 were the same and even at time dragged on so badly I even fell asleep at chapter 13. LadyPsychic says that it's like Trigun, maybe; we won't ever know as the story setting is only kinda similar: vast wasteland, big bounty, lost tech, OP MC(debatable), two companions(3 if you include the unicorn[?]). I would actually Place Rappa in it's own category because the mangaka can't decide what to do. Fantasy, magic, crazy futuristic but steampunk tech, dinosaurs(wtf?), mechs...to much in only 17 chapters.

Another point against it being like Trigun is that Trigun was 20 chapters, 3 chapters more(it does speed up halfway through) but it has a cohesive story line the isn't all over the place. This really wasn't enjoyable, I just got done the original Trigun(the first time I read it) and it was very good, and held my interest, engrossing is the word I love to use on very good stories, just like all Baki's I want to read the next chapter and not sleep, this didn't do that I found myself thinking 'only 17 chapters I'm almost done', that's not a good thing. I can't really recommend this it's not bad but it ain't good, barely scratched the surface of Trigun but not even close to being like it, to many things happening all at once. One read.