It's certainly a flawed game though...
It completely falls apart towards the end, has a nutty-stupid ending, and shows clear signs of having had development chopped suddenly at some point. The gameplay often feels very bare and un-fleshed-out. If you don't like stereotypical Japanese characters, you may hate this.
But, especially in the earlier parts of the game, it has awesome nostalgic and thoughtful vibe that I've never encountered in another game. It really pushes the showa-era nostalgia angle, and if you're into that (I am, very much), you may well love it to death despite the obvious flaws.
It's really a shame it didn't get more development, because it seems clear the devs lavished a lot of love on some parts of it.