Peacemaker Kurogane.

About Peacemaker Kurogane

Peace Maker Kurogane is a Japanese manga series written and illustrated by Nanae Chrono. It is unrelated to the Peace Maker manga by Ryōji Minagawa. The story begins in 19th century Japan before the Meiji Restoration, a chain of events that led to enormous changes in Japan's political and social structure while the seeds of the revolution are being planted. The story follows the boy protagonist, Tetsunosuke Ichimura, who joins the Shinsengumi while seeking strength to avenge his parents' death at the hands of a Chōshū rebel.