In the tumultuous Sengoku Era, a half-human, half-yōkai named Hidechiyo embarks on a perilous journey through a realm haunted by ancient demons and ruthless warlords. Their destiny is intertwined with the legendary Sohayamaru, a blade capable of vanquishing even the most powerful evil.
Hidechiyo's path is fraught with danger, as they must face terrifying yōkai, treacherous allies, and the machinations of a mysterious entity known as Kashin Koji. Their quest will lead them across the land, from bustling cities to desolate battlefields, as they seek to uncover the secrets of their own origins and the fate of the nation.
Along the way, Hidechiyo will encounter legendary figures from Japanese history, forming alliances and facing off against legendary foes. Their choices will shape the course of their journey, as they navigate a world where the lines between good and evil are blurred.
But the greatest danger lies within Hidechiyo themselves. Their yōkai heritage is a double-edged sword, granting them incredible power but also making them susceptible to the darkness that lurks within. Only by mastering their inner demons can they hope to survive and fulfill their destiny.