Yeah, I saw it - basically an extra-length episode with better graphics. I couldn't figure out when it took place during the series, I guess after Diablo but before Fifth Moon. It was pretty fun, I'm not sure what else I gained from the experience though. I like the tone of the manga a lot better personally.
What you call love was invented by guys like me, to sell nylons. You're born alone and you die alone and this world just drops a bunch of rules on top of you to make you forget those facts. But I never forget. I'm living like there's no tomorrow, because there isn't one.