After he transmigrates as Kakashi Hatake, his knowledge of the story leaves him with nothing but disgust for the brainwashing Will of Fire.
The White Fang of Konoha saves someone during a mission and is condemned by everyone, eventually taking his own life. Obito, Rin, Minato...
One after another, they are sacrificed by the so-called "village."
And he still has to smile and play the part of a genius elite jonin. In the future, he may even be forced into the Hokage Position.
Enough.
He has endured for a long time, waiting for the day the Third Hokage falls in battle.
At last, that moment has come.
Kakashi steps forward and turns the tide.
Then, after leading Konoha to its peak,
the entire village sees Kakashi as its only hope and begs him to become the true Hokage.
Kakashi smiles calmly, scratches out the mark on his forehead protector, leaves a letter at the Memorial Stone, and turns toward Amegakure.
Akatsuki, let me show you how to achieve true world peace!
Years later, Konoha lies in ruins, and Naruto, now Hokage, stands before Kakashi.
With tears in his eyes, he asks, "Kakashi-sensei... are you really going to destroy everything we fought so hard to protect?"
Six Paths Kakashi looks into his eyes and smiles serenely.
"Naruto, what I want to destroy is the rotten system that forced you and me to march to our deaths with our own hands. And then..."
"Create a brand-new world."
I hope it's a single heroine