The new villains are the only thing that really makes this OVA unique when compared to the show, as everything else is the same. The main characters act in exactly the same way here as how they act in the show, the music is still mediocre, and the art is no different from how it is in the show, either. Given this, I see no reason to repeat what I have already said in my review of the show.
The designs of the new villains are pretty unique in comparison to the other characters, so there is that going for them, but that's it when it comes to the positives. Thirty minutes isn't nearly enough time to develop characters so that they aren't one-dimensional, so that's what the villains are; evil, and nothing else. I suppose this isn't a fair critique, but what more can I say?
Ultimately, even though this OVA probably isn't canon to the show, there's no point in watching it unless you watched and liked the show. I'm sure that those in the target audience will find some joy in seeing more of Licca and her friends.
