Sanmingzhi traveled to the world of Naruto and gained the ability of "photographic memory". He can fully master any ninjutsu just by watching it once. He became a mentor at the Konoha Ninja School, and the Third Hokage had high hopes for his talent.
In this Uzumaki Naruto who was rejected by the villagers, San Mingshi saw something different - not the Jinchūriki of the Nine-Tails, not a monster, just a lonely boy who desperately wanted to be recognized.
He decided to stand not far away and guard the child's growth.
Asking for ramen noodles, after-school tutoring, practicing ninjutsu with him... Sanmingshi used his gentle way to fill Naruto's empty childhood bit by bit. He knew all the plot trends in the original work, knew that Mizuki would betray, knew that the Sealed Book would be stolen, and also knew that one day, Naruto would grow into a hero that surpasses everyone.