Shinobi World Corporation operates in various fields that are rooted in the lives of the people, with the philosophy of "supporting a rich life from the shadows." It is widely known as a very popular general trading company in modern Japan. Shozo Hattori, an employee of such a company, does not have a good general sales record... but he boasts overwhelming ability in "ninja duties"! This is a story that depicts the very ordinary daily lives of modern office workers who are a bit strange.