I read this manga a long time ago (3 or 4 years I think), it's drawing style seemed to look like Vagabond.
There was explicit mature content in that series but the story & drawing style was thrilling & interesting.
The story was about a fearsome samurai who has the blood, strength & intuition of an animal (maybe a wolf). That might because his father or mother was a half-animal person or has some kind of disease that made dots appear on his/her skin (and he/she would die soon after being infected).
In the first chapters the main character raped a princess - daughter of an ancient Japanese lord. In the next chapter he raped some other girls but to free them from illness or something else, I don't remember.