Once he traveled through time and came to the world of Naruto, Fujii was confused. Who can immediately change their previous character after time travel, from a harmless young man on the Blue Star to a killing machine? Faced with the ninja talent that he was not good at, Fujii Shoichi chose to find another way and take the path of research to explore the power that many senior time travelers had not paid attention to. (Don't be abstract, try your best to restore the original characters, respect the basic settings, and hope to work with readers to create a more reasonable plot)