Ninja Stalker!

Benimaru is a fugitive ninja with no future and nothing left to lose. Stripped of his clan and purpose, he drifts through life as an outcast until despair finally drives him deep into the forest to await death. However, just as he resigns himself to his fate, an unexpected encounter changes everything. A mysterious stranger approaches him in the woods, offering words that reignite his extinguished will to live and pull him back from the brink. This chance meeting reveals the stranger’s true identity: Lord Shinosuke Kiyohisa Yamato, the son of the province's ruling feudal lord. Bound by a sudden debt of gratitude, Benimaru decides to dedicate his formidable abilities to protecting the young nobleman. Operating entirely from the shadows, the runaway ninja uses his stealth training to secretly watch over Lord Shinosuke, ensuring his safety without ever revealing his presence. Yet, guarding the heir proves to be a uniquely challenging endeavor. Despite his high status, Lord Shinosuke appears remarkably oblivious to the dangers surrounding him—and perhaps even more clueless than his composed demeanor suggests. As Benimaru navigates this hidden role, the unlikely bond between the desperate rogue and the unwitting aristocrat sets the stage for a compelling tale of silent devotion.