Not sure if it gets better, but I stopped about halfway through volume 1 out of boredom. The fights were incomprehensible, the plot was just kind of bland (yes, even for just half a volume in), and there was a recurring character who looked like a racist japanese caricature from the 40's. Ignoring that random racist caricature, it wasn't particularly fun or cool except in that edgy middle school weeb way. If that's your thing, then maybe you'll enjoy Ninja Slayer Kills more than I have. Can't say I recommend it, though.