Story - 10/10
The story follows Miyamoto Musashi - if Miyamoto Musashi was a whiny shounen protagonist dedicated to winning the heart of a girl, instead of like he's depicted in my current favorite manga, Vagabond. Now, normally I would get irritated because it shares the same name as the badass samurai, but that issue doesn't bother me since they use dart guns. Plus, I can look at it this way: he grew out of his immaturity and into the badass we know him for today.
Art - 5/10
Ignoring the animation errors, the art style is just...mediocre. It's just not a style that really appeals to me. It's just a somewhat...plastic style. The color is alright, but that's about it.
Sound - 10/10
This is where it starts to get hilarious - listen to the opening theme and then tell me that it isn't hilarious. No seriously: "WE'RE GHOST BUSTERS OH OH OH!" How are those lines NOT comedy gold?
Character - 10/10
What character? No really, I don't remember anything about the characters that wasn't hilarious. Oh, Miyamoto is a whiny kid. Other than that, that's all I remember.
Enjoyment - 10/10
This series made me burst out laughing when I first saw it. Watch it for yourself if you want a "so good it's bad" show.
Overall - 10/10
There is one thing I'd like to note: I can only find subs up to episode 4, so you're going to have to watch it raw afterwards...but it won't matter, since this show is funny without the subs.
RIYL: ...I actually don't know what this show is similar to. No, seriously, I have no idea.
