[Invincible + nurturing + no chakra + body tempered to sainthood + ignores the original plot]
He transmigrates as a baby and is adopted by an ordinary Uchiha family. Because he cannot refine chakra, the arrogant Uchiha look down on him.
He tries to warn them of the coming massacre, but nobody listens.
In that case, I’ll just look after myself.
When faced with Itachi Uchiha’s mission to wipe out the clan,
he may be unable to refine chakra, but he has no human limits either, and his physical training has no bottlenecks.
After sixteen years of training, he is already a far cry from what he once was. Still, all he does is beat Itachi and leave the Uchiha to their fate.
After the night of the massacre, he plans to leave Konoha as an ordinary civilian.
But then Hiruzen Sarutobi calls in a favor from Mikoto Uchiha and asks him to take Sasuke as his adopted son.
After adopting him, he wipes out the Shimura, Torne, and Mito clans.
He becomes a special adviser to Konoha.
He has fought for everything he has, one punch at a time.
Decisive and ruthless, he always repays kindness.