Watch Iwane: Sword of Serenity

Iwane returns to his homeland and gets caught in the middle of an incident that results in the tragic death of his best friends. He leaves his domain and becomes a vagrant masterless samurai. Iwane begins to work as a bodyguard at night for Imazuya, a reputable money exchanger. One day, he learns that Imazuya is being targeted in a conspiracy of the government, and Iwane decides to protect him.