In a world filled with magic and mythical creatures, a skilled ninja named Bōsō becomes the target of a dangerous pursuit. Having been betrayed by his own clan, he finds himself ensnared in a dark web of vengeance and power. With an exceptional talent for combat, Bōsō is both a legendary warrior and a man marked by his past. His quest for redemption leads him to cross paths with an enigmatic woman who harbors secrets that could change the course of his existence.
As he progresses on his journey, he faces powerful foes, including supernatural creatures and rival ninjas intent on destroying him. The action intensifies, and each battle tests not only his skill but also his morals and will to survive. As he unravels the mysteries surrounding his betrayer, Bōsō must choose between vengeance and salvation, all while seeking to reclaim his lost honor.
The plot unfolds in an alternate feudal Japan, where the supernatural and the real collide in an impressive visual spectacle. Featuring vibrant action scenes, extraordinary ninja skills, and a narrative filled with unexpected twists, this thrilling story blends anime aesthetics with a profound exploration of loyalty, betrayal, and the path to self-discovery. All this while Bōsō strives to become the hero he has always wished to be.