Vagabond

From Viz:
At seventeen years of age, Miyamoto Musashi, still known by his childhood name, Shinmen Takezō was a wild young brute just setting out along the way of the sword.
In the aftermath of the epic Battle of Sekigahara, Takezō finds himself a fugitive survivor on the losing side of the war. Takezō's vicious nature has made him an outcast even in his own village, and he is hunted down like an animal. At this crucial crossroads in Takezō's life, an eccentric monk and a childhood friend are the only ones who can help him find his way.

Note: Won the 24th Kodansha Manga Award in the general category in 2000. Won the Tezuka Osamu Cultural Prize in 2002 and was nominated for the 2003 Eisner Award in the Best Writer/Artist category.