Peacemaker Kurogane - S01

At 15, Tetsunosuke Ichimura has lost his childhood innocence and is consumed by a need for revenge. Tormented by the brutal murder of his parents, Tetsu decides to find the Shinsengumi, an elite group of swordsmen sworn to protect the capital. The Shinsengumi are locked in a savage conflict with the Choshu rebels, the same merciless killers who murdered Tetsu's parents. In the name of justice, and against his older brother's wishes, Tetsu desperately hopes to join the Shinsengumi. But an incident late one night forces him to face reality. The Shinsengumi prove they are capable of the same brutality as his parents' murderers. Wading through a sea of espionage, intrigue, and flowing blood, the young boy must decide whether to shed his humanity and become a demon of the Shinsengumi, or to let go of his hatred and become a Peacemaker in the spirit of his father. Revenge is sweet, but is it worth losing your soul?