Sakamoto Days follows Taro Sakamoto, a once-legendary hitman who retired to run a convenience store and start a family. When his past catches up to him, he must use his incredible combat skills to protect his peaceful life, all while keeping his cover as a mild-mannered, overweight shopkeeper. Readers enjoy the series for its hilarious contrast between everyday domestic life and over-the-top action, its creative fight choreography, and the lovable cast of quirky assassins and allies who bring both chaos and heart to the story.