And I think Kurozuka means black coffin. Maybe.
Anywhoo.
Let's say you're a toppled Japanese Lord running from demonic usurpers in the chilling mountains with your seemingly loyal retainer and stumble upon a large manor presided over by a beautiful woman who is all alone in this dangerous climate. Moreso, this woman is completely willing to let you spend the night on one request: don't go into her personal chambers only to discover her getting her freak on with a bloody corpse...
Clearly no good will come of wanting to have sex with her and be her eternal lovemonkey slave because she'll cut your head off and you'll be forced to time travel through apocalyptic worlds in endless search of this demon who on one hand lavishes her love upon you and on the other endlessly eludes you.
So that's the premise. Kuro, the retainer dude, becomes an immortal vampire head thing, and searches for the mysterious Kuromitsu vampire chick across time--falling in love over and over again. There are some Jade Empire guys who eternally seek her because her blood can make you immortal, but there's a catch (isn't there always). And there are some recurring characters that span the ages, but it's all confusing and contrived, and irrelevant to the main story.
The style of this is clearly retro cyberpunk with new production values. There's a hint of Ninja Scroll and Fist of the North star in the character designs, backdrops, and apocalyptic wasteland. There is over the top bloody violence, and the fight scenes are nicely done. Also, there is the classic theme of a ragtag band of adventurers seeking a princess in a castle taken by a dark lord (which more or less describes the generic cast of extras that follow Kuro along--but most have amusing traits, like the quiet and ruthless Kuon who seems to remember useless details about kids cartoon with great enthusiasm).
There isn't much to the plot, just the endless pursuit of Kuromitsu and the typical Demon-play we've come to expect, but the character design is creative and the pacing is decent. There are flashbacks, which add to the timeless plight of Kuro and his amesia (the core of the premise), but overall this is just a grindhouse flick so there's little to fault on something that isn't being too pretentious.
Of note there's an amusing episode that totally goes overboard in regard to a bag of shit and a wheelchair (you may not want to see it, now that I think about it).
With all that said, the ending polarizes you. I hated it the first time, the second I decided to accept that it wasn't that bad to reiterate the central theme of pursuing an unreachable goddess.
Make up your own minds.
