Having penetrated Konoha with his soul, Han Shengchen was well aware of the high dangers in the ninja world and turned on the ultimate survival mode. For eighteen years, he pretended to be the "10,000-year-old useless genin" that everyone ridiculed, secretly perfecting his ninjutsu and taijutsu to the extreme, just to live a safe life.
In the 60th year of Konoha, Naruto graduated, and he had just turned eighteen. His eighteen years of extreme accumulation exploded, and his strength soared to the level of an elite Jonin, and he showed his sharpness ever since. The Kingdom of Waves saved Shiro, the Chunin Examination determined the situation, subdued the powerful, overthrew the five major countries, and ended the century-old war in the ninja world.
He even set foot on the universe with his powerful men, destroyed the Otsutsuki clan, rewrote the rules of the universe, and finally became the eternal emperor of the universe.