Naruto: Strogest taijutsu specialist

Reincarnated into the Naruto world during the Third Great Ninja War, Shinji gains a power that grows with every battle. Unable to use ninjutsu, he relies on raw strength to survive. But as war takes its toll, Shinji must decide if his growing power will end the cycle of violence—or become part of it.
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warning
the first 5 chapters are as follows
ch 5 is chapter 1
ch 4 is chapter 2
ch 3 is chapter 3
ch 2 is chapter 4
ch 1 is chapter 5
the rest of the chapters are normal