Following the tragic loss of his parents at the hands of the Choushuu, Ichimura Tetsunosuke seeks strength through the Shinsengumi to avenge their deaths. Despite his determination, Tetsunosuke struggles with the ruthless nature required to protect peace alongside this renowned faction. With his brother's guidance and the camaraderie of his Shinsengumi comrades, Tetsunosuke embarks on a journey filled with bloodshed and suffering, unaware of the challenges that await him within this legendary organization.