A one-episode OVA that suffers from the too much background and setting and not enough time to establish it all-syndrome. The OVA has mechs in space, human look-alike aliens with magic, animosity between humans and the human look-alike aliens (due to a war which the aliens won) and as a present threat an evil, spaceship/AI that wants a new pair of space engines. What the OVA doesn’t have is an interesting plot, compelling or at least well-written characters or any idea what to do with all the set-pieces.
Animation is pretty good for such an old OVA, but the rest is mediocre and plain boring, while most of the dialog ranges from irritating to downright annoying. No cliche is left behind, no tired trope left out. There’s no good reason to watch this or hunt it down.