Rurouni Kenshin / Samurai X

Nineteenth century Japan: a land torn by warfare and rebellion where small bands of soldiers seek to overthrow the tyrannical Tokugawa Shogunate. 

Enter Kenshin, whose fighting skills were honed by the great swordsman Hiko. Kenshin's soul is embattled much like the killing fields of Japan. His world is thrown into further confusion by the arrival of a mysterious woman named Tomoe. Her kindness and attention show him a kind of life he didn't know existed. Does she hide a secret that could destroy everything he has come to depend on?