Rurouni Kenshin: Trust & Betrayal S01 E01 The Man of the Slashing Sword

Kenshin Himura survives a vicious bandit raid to be taken under the tutelage of master swordsman, Soujiro Hiko the 13th. Forged to be a weapon for justice, Kenshin becomes a tool for revolutionary interests as a hired assassin whose fate will become bound to Tomoe, the widow of man he has slain.