Become the Ultimate Creature Starting from Naruto

"Teacher, what do you do?" "I'm doing research in Konoha." "What research?" "Being studied." … After the Nine-Tails Rebellion. Orochimaru defected, all experimental subjects were accepted by Konoha, and Uzumaki Maru Gin survived. From then on, Uzumaki Naruto had a big brother, and the ninja world had a genius ninja. Ps: Naruto fanfic, pseudo-invincible, no system.