Is the cost of losing one's humanity worth seeking revenge when childhood innocence is lost? Tetsunosuke and Tatsunosuke grew up under a diplomatic father who strived for Japanese prosperity and harmony during the dawn of the Meiji Restoration. However, after witnessing their parents' murder, Tetsu's thirst for revenge prompts him to join the Shinsengumi, an unofficial police force as brutal as their parents' killers. Amidst the chaos of subterfuge, deceit, and violence, Tetsu stands at a crossroads, choosing between embracing his demonic side or relinquishing his anger and evolving into the ultimate peacemaker.