Don't be abstract and write a Naruto fanfic that is logical.
The protagonist of this book, Akimichi Yu, is a native of the Naruto world.
When he was 6 years old, a time-traveler took his body. After defeating the time-traveler, he obtained the golden finger necessary for the time-traveler, and thus embarked on a different path from the original work.
Replaced Kurenai as the instructor of Class 8 and became Hinata's teacher.
Later, he accepted Hinata as his apprentice and taught him the medical ninjutsu and the inheritance of the wet bone forest.
He practiced Shigulin Immortal Technique with his disciple Hinata, and worked with Naruto to resist Payne's invasion.
And in the Fourth Ninja War, he transformed into a giant and fought against Madara's ultimate form, Susanoo.
Reader comments
As the author, I just want to know whether you are a time traveler or a native. Since you are a time traveler, it is impossible for him not to know the Mangekyō Sharingan. Since you are a native, why did he get the system?
As the author, I just want to know whether you are a time traveler or a native. Since you are a time traveler, it is impossible for him not to know the Mangekyō Sharingan. Since you are a native, why did he get the system?