Naruto: The Senju Who Refused to Die

The weakest Senju is about to become its greatest legend. Senju Shigure spent more than thirty years trapped at the level of a mere genin, mocked by his clan and forgotten by history. Then he discovers that his system can restore his youth and break the limits holding him back. Armed with decades of knowledge, ruthless tactics, and an iron will to survive, Shigure begins rewriting the fate of the Senju Clan and the entire shinobi world. — Description from novelcodex.orgFull novel: Naruto: The Senju Who Refused to Die — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠