Its an anime with late 90s aesthetics. While it may not appeal to a lot of people (because the last 20 minutes of this anime are consumed with an exposition dump and an ending which leaves a lot of head scratching - even though it makes sense, but its more short term sense rather than long term), the overall art style, english dub quality, and general competent direction is acceptable. I think its a decent work, even though I wouldn't see it a second time.
With that said, it is under 50 minutes, so that works in its favor. You can watch the OVA without prior knowledge about the villains. That's why the ending - although you expect it because of the modus operandi of the villains - isn't lame, but it isn't mind blowing either. Overall, its a competent enough story, with characters that may be forgettable to dedicated anime fans, but for casuals its alright.
