A fire took away everything from him, plunging him into endless darkness. Many years later, he faced a fire again. Although he had difficulty moving, he was still fearless and rushed into the fire, eventually losing his life. However, he ended up in another world by accident.
In this world, he became the son of Hiruzen Sarutobi, Shinnosuke Sarutobi, and obtained a system called Invincible. He thought he would live a free and unrestrained life, but the first task given by the system was to defeat his father. Ever since, a kid who always talked about defeating Naruto gradually entered the hearts of everyone in Konoha.
Sarutobi Hiruzen: My son has the qualifications of Hokage.
Danzo: Hiruzen, you will regret it!
Hiruzen: I am Shinnosuke's father!
