Everything you need to know about this movie is that its execution was really, really bad. It felt like a Disney movie that was scrapped while they were still working on it and then pawned off to Toei for a few bucks.
Some positive thoughts: There were a lot of "What the fuck?!" moments in it, and it was so bad that I laughed a lot while watching it - simply because it was too bad to be true
But let's go a tiny little bit more into detail:
The story was really jumpy most of the time and forgot to explain a lot of things happening. The
pacing was horrible - and at a lot of points in the story, the movie just repeated a completely pointless scene over and over, just to be a few minutes longer.
There is really nothing good that can be said about the art, it was pretty bad even for the standards back when it was produced.
And the sound was just horrible and at most parts of the movie didn't fit at all to what was happening on screen.
About the characters? Well, they were all pretty stupid, and felt pointless. In fact: the entire story did.
There is no real lessen to be learnt, or anything positive for children at all, so I don't know why this was produced. For Disney movies (yes, this definitely feels like one), there was at least a lesson to be learnt, most of the time.