Not an invincible-protagonist story. Farming, saving others, growing stronger.
A special forces king transmigrates into the Hokage world as Hidan’s older brother, when he is still quite young.
In this Hokage world, he is weak and faces countless dangers and challenges. Survival is difficult.
However, an accident grants him a special ability. Not only does it give him an immortal body, it also lets him learn the powerful Eight Gates.
With this special ability, he becomes exceptional, far stronger than his peers. While others are still struggling to improve, he quickly rises to prominence.
In the future, he will surely become the strongest through his own abilities and ultimately unite the entire world.