This particular OHR game has a Job System in it, and as far as I know, it's the only one too. Lots of people enjoy the game, although a few don't. But give it a whirl, and find out for your self.
"D3 reminds me of poor Super NES RPG. Not in graphical style, but in how you'll play for a while, get bored, and then pick it up again in a few days, mostly because you have nothing better to play. Keep your eyes open for the new version."
"For all the annoyances that this game has, I still think it's a cleverly-made game that deserves attention. The areas that need work really need a lot of it, but there's still enough good parts left over to justify saying that the author put a lot of heart into making this. With that, I'll say give it a try, even if it's just to see the uniqueness of the design."