The story follows the boy protagonist, Tetsunosuke Ichimura, who joins the Shinsengumi (initially as Toshizō Hijikata's page) while seeking strength to avenge his parents' death at the hands of a Chōshū rebel.

[2] The story is focused on the main character, Tetsunosuke Ichimura, who is an energetic, short and very childlike fifteen-year-old (16 in the manga).

He develops relationships with all the legendary members of the Shinsengumi army helping them with their various struggles as he constantly battles his own against himself.

[15] Peacemaker Kurogane was licensed by ADV Manga,[16] which released three volumes between October 4, 2004, and March 22, 2005,[17][18] before putting it on hold indefinitely.

The manga was licensed and published in France by Kami,[21] in Germany by Tokyopop, and in Russia by Comics Factory.

[23][24] An anime television series adaptation by Gonzo and produced by Geneon ran for 24 episodes, which aired on TV Asahi between October 7, 2003, and March 24, 2004.

[25] The anime mostly follows the plot of the original manga Peace Maker, but also introduces characters that are only shown in Peacemaker Kurogane.

It is directed by Shigeru Kimiya and written by Eiji Umehara,[37] with animation produced by White Fox and character designs by Sayaka Koiso.

[46] The songs were sung by Mitsuki Saiga, Yuka Imai, Joji Nakata, Takaya Toshi, Junichi Suwabe, Kappei Yamaguchi and Kenji Nomura.

The songs were sung by Mitsuki Saiga, Joji Nakata, Takaya Toshi, Kappei Yamaguchi, Kenji Nomura, Kousuke Torimi and Takahiro Sakurai.

[47] On March 10, 2004, a soundtrack CD was released for the opening theme of Peacemaker Kurogane, "You Gonna Feel" by Hav.

[49] Mania.com's Megan Levey commends the tension and emotion of the second volume of Peacemaker Kurogane that "seems to just ring from the pages".

[53] Mania.com's Chris Beveridge commends the anime for its slowly revealed "supernatural elements" as well as the simplicity and comical nature of Saizō the pig.

[58] Science Fiction Weekly's Tasha Robinson commends the anime for its "highly textured, detailed and beautifully rendered semi-historical drama, very much in the spirit of Rurouni Kenshin" whenever Tetsu "drops to the background" or "shuts up for a few scenes".