For the most part, I loved the first two episodes. I was constantly confused about what was going on with Benkei - one minute he saved the main character, refusing to kill him when offered many chances, and then he seemed to suddenly be on the baddies side. Episode 2 confused me completely, I wasn't sure if Benkei was supposed to be the evil samurai at the start or if the focus just changed to the insanity of his mind randomly. And, talking of Benkei, the guy who Kuromitsu was drinking the blood of in the first episode looked like him...hell, every secondary character seems to have the same design as Benkei!
As always with anime at the start, I'm at a loss as to what's going on in terms of story, and the switching between samurai Japan and a post-apocalyptic setting isn't helping me out. Right now, I'm simply focusing on the main character and his relationship with the immortal female lead in order to avoid getting a headache. I'll worry about not understanding the plot at all when I've watched a couple more episodes.
Anyway, it's great aside from the plot confusion. The animation looked good; the action was fairly exciting; I want to know more about Kuromitsu, the hot immortal lady and the dark story is what I like to see in my anime. It was a bit odd how quickly the main two wanted to get it on without knowing anything about each other, but I'll just go with the flow and not try to be logical about sexual relations with mysterious women.