"Sakamoto Days" centers on Taro Sakamoto, a former legendary hitman who has retired to live a peaceful life as a convenience store owner with his family. Once feared as one of the most skilled assassins in the underworld, Sakamoto has left his violent past behind, embracing a mundane existence. However, his tranquil life is disrupted when his former associates and enemies begin to resurface, forcing him to confront his past. Despite his desire to avoid conflict, Sakamoto’s unparalleled combat skills and quick thinking are repeatedly put to the test as he protects his loved ones and navigates the dangerous world he once dominated. The narrative explores Sakamoto’s dual identity as both a devoted family man and a former assassin. His wife, Aoi, and daughter, Hana, are unaware of his past, adding tension as he strives to shield them from the chaos of his former life. Sakamoto’s physical transformation—from a lean, deadly assassin to an overweight, unassuming store owner—serves as a visual metaphor for his attempt to leave his old self behind. However, his instincts and abilities remain sharp, often emerging in unexpected and humorous ways. The story introduces a diverse cast of characters, including Shin, a young and ambitious assassin who becomes Sakamoto’s protégé. Shin’s admiration for Sakamoto’s skills and his desire to learn from the retired hitman create a dynamic mentor-student relationship. Other notable figures include former colleagues and adversaries, each with unique abilities and motivations, who challenge Sakamoto in various ways. The series balances action-packed sequences with comedic moments, often highlighting the contrast between Sakamoto’s current life and his past. As the plot unfolds, Sakamoto is drawn back into the world of assassins, facing increasingly dangerous foes and uncovering conspiracies that threaten his newfound peace. The series blends elements of action, comedy, and drama, with a focus on character development and intricate fight choreography. Themes of redemption, family, and the struggle to escape one’s past are central to the narrative, making "Sakamoto Days" a compelling exploration of a retired assassin’s journey to protect his present while grappling with the shadows of his former life.