It's pretty good. I've seen people compare it to the monster world series, despite being top down view, and an RPG. You'll actually recognize some enemies if you did have the Turbografx-16 game(or if you just recognize the anime). Usual downside of an RPG though, there gets to be a point where you just don't know what to do next/get lost(plus money farming, but I'm at a point where one encounter pulls up ~500, 600 with a certain rare drop weapon equipped). Currently I'm trying to find the Dragon Wing, the only clue the old man gave, while he was there, was that it was by the sea. I found the Dragon Room he mentioned, but not that last treasure.
Just keep a save state for a backup save, or you're going to lose money and items when you load(saving occurs when you rest at an inn, btw). Also had a game erase on me, when I tried a new game, didn't like something, and reset to try a new game again. To be fair, I was loading it up with cheat codes. I was trying to rush through and get back to where I could talk to the old man to get the clues to the dragon treasures again, which I did, then loaded a save state to get my save back.