What's interesting here is how inconsistent the animation is. Most of the animation and the character designs are typical for late 1960s anime and rather unimpressive but then a tank or flying pirate ship will show up that looks like it was ripped right out of an early Studio Ghibli film. In those moments you know right away that Miyazaki has to be the one responsible for those sequences given the obvious attention to detail. These sudden spikes in animation quality are at times actually jarring compared to the general quality of the rest of the film.
The plot is completely forgettable and the dialogue is also uninteresting but the action sequences are decent for the late 1960s and these standout bits of early Miyazaki animation are worth checking out for those who are inclined.
Also the ending sequence is somewhat hilarious and shameless from a tonal perspective. MC sails around in a yacht with his new friend and his dog while a song in the background hypes him up as the savior of the world. Then the memento of his deceased mother (that brought him to anger and sorrow earlier in the movie) falls off the boat into the ocean and he doesn't give a single care or look back. Good stuff.
