If You Become Hokage, All Your Subordinates Will Rush Out of the Universe.

There is a system + making up for regrets + multiple female protagonists + outside the ninja world The modern soul merged with Shisui's memory, became the new Shisui, and awakened the system. Everything in the ninja world has changed because of this. The Uchiha clan will not be destroyed, and Nazuo's childhood will no longer be miserable. Xiang Ling's mother is not dead, and Zhong Wu doesn't need a "cage" all the time. Kimimaro did not meet Orochimaru, and Kabuto Yakushi did not kill the orphanage director who raised him. Everything will become beautiful, and the ninja world will no longer be filled with sadness.