Sakamoto Days is a fast-paced action-comedy manga that combines intense assassin battles with slice-of-life humor, following Taro Sakamoto, a once-legendary hitman feared across the underworld who abandons his life of crime after falling in love, choosing instead to live peacefully as a family man running a small convenience store, while secretly retaining his extraordinary combat skills.

As the story unfolds, it evolves into a dynamic narrative filled with high-stakes battles, dangerous enemies from his past, and unexpected comedic moments, as Sakamoto is forced to protect his loved ones while maintaining his promise to never kill again, exploring themes of redemption, family, identity, and balance between past and present, while blending action, humor, emotional storytelling, and creative fight choreography, making it one of the most entertaining and unique modern manga series, also known as Sakamoto Days manga, Sakamoto Days anime, Sakamoto journey, retired assassin saga, and action comedy family story.