Naruto: I Became an Adult at the Age of 6, It Makes Sense!

Let me start with the conclusion: I am six years old, an orphan from Konoha, but below the shadow level I am invincible, and above the shadow level I am invincible! Why? My system is a bit violent! While others are still practicing throwing kunai. I threw seven or eight white terms such as [Throw], [Strength], [Reaction], etc. Into the system. Bite! The fusion is successful and the green entry is obtained: there are no false starts! Result: In the physical arts class, the stone I threw casually hit Uchiha Fugaku on the back of the head 100 meters away. Fugaku: "???" When others finally extract chakra. I combined the [Chakra Refining] and the [Ancient Text Interpretation] entries that I got from cleaning the library. Bite! The fusion was successful and the blue entry was obtained: Immortal Human Body (Deteriorated Version)! Result: My chakra capacity directly overwhelmed the teacher. Iruka: "This is unscientific!" When the Third Hokage was still worried about the future of me, a "war orphan". I looked at the newly fused golden entry on the panel [Eight Gate Dunjia·Death Door (No Side Effects Version)] and fell into deep thought. Tsubasa Kazama: "Go and rip off Danzo's head now. It should be... Reasonable, right?"