Refining the Ten Thousand Soul Banner with Danzo, He Says I'm Too Extreme

At the end of the Third Great Ninja War, Danzo, unwilling to let the war end so hastily, picks up a Ten Thousand Soul Banner from another world.

"Do you want to become Hokage?"
"Do you want to stand before Hiruzen Sarutobi and declare, 'I am the Hokage'?"Bai Shi, residing in the Ten Thousand Soul Banner as a soul, speaks to Danzo.

"Just abandon your identity and body, use your soul to possess the Third Hokage. You will become him, but you can do even better than him."

Under Bai Shi's temptation, Danzo chooses to swap bodies with Hiruzen Sarutobi. He wants to prove to his old friend that he is the best Hokage for the village!

In the Uchiha clan grounds, Itachi, pondering the meaning of life, meets the man who will influence his entire life.

"Itachi, I have found the best teacher for you," Bai Shi says to the young Itachi. Inside Itachi's consciousness space, the Second Hokage, Tobirama Senju, coldly stares at him. "Evil Uchiha brat!"

At Kakashi's home, having experienced the deaths of his loved ones one after another, he meets the man who changes his destiny. "Kakashi, long time no see!" On this day, his former teammate Rin Nohara, whom he killed with his own hands, appears beside him as a soul, smiling like a flower.

"Kakashi, do you want to see Obito again?"
"Then, with Rin by your side, go to the Land of Rain, join the Akatsuki, and complete the mission I give you," Bai Shi says to Kakashi

This is a story of a demonic cultivator who lost his physical body, starting from the world of Naruto, stirring up wars under the banner of justice across countless realms, harvesting billions of souls, and achieving supremacy.