Vagabond, Vol. 2 by Takehiko Inoue

After a humbling capture compels him to face his own brutality, Musashi is set loose with a new resolve and begins roaming the countryside, testing his sword against ruthless foes such as the Tsujikaze while groping toward discipline. In his wake, Otsu wrestles with love and duty, and Matahachi slips further into lies and petty crime with dubious companions, setting the stage for future conflict. Brutal skirmishes and quiet introspection mark the first steps of his quest to become invincible under the sun.