This is one awesome manga. I'm actually not a fan of samurai stuff. I like Sci-fi and fantasy. But the first thing that stunned me here was awesome art.
The clean moves with pen makes an awesome drawing that is stunning and complex at the same time. But yet, in some places you cannot clearly see what is going on. Regarding that, i was amazed with so much violence and blood in this manga. And let's be honnest. This manga has it a lot.
The storyline at the begining seemed nothing special at all, but as you keep reading, the story shapes better, and introduces us with Rin and Manji. Those personallities are total opposite of each other, and that gets them in all sord of disagreement.
I really enjoyed reading this manga, and overall, this is one helluva' peace of art. Just don't read it if you don't have solid stomach for it :)
Good reading ;)