The soul of a man from Blue Star transmigrates to the ninja world and successfully takes over the body of the beautiful kunoichi Pakura of the Scorch Release from Sunagakure, in the Land of Wind.
Though she had turned into a female ninja, Pakura quickly adapted to her “true” identity. With a transmigrator's foreknowledge, she easily learned Sage Mode and mastered the Scorch Release, becoming a Kage-level fighter at a young age.
During the war, Pakura fought the Seven Ninja Swordsmen of the Mist from Kirigakure, in the Land of Water, all by herself and defeated them, taking their seven special ninja swords as spoils. From then on, her name spread far and wide.
Later, she left the resource-poor desert and joined the bountiful forest instead. The Third Hokage thought very highly of Pakura, choosing her as his successor over the Yellow Flash.
After all, Pakura was more obedient, more perceptive, and more willing than Minato to serve as a puppet. All she wanted was to wait for her destined soulmate to arrive.
As time passed, Pakura learned the Strength of a Hundred Seal to preserve her beauty, so her beloved wouldn't find her unattractive.
“Boruto~ You're finally here. I... I've been waiting for you for so long.”
After decades of waiting, Pakura's beloved had finally arrived. He might not know her, but that was no big deal. All he had to do was obediently accept her overflowing love.
Minato Namikaze -> Naruto Uzumaki -> Boruto Hyuga
Kushina Uzumaki -> Hinata Hyuga -> Pakura
Whether the ninja world is in chaos is up to the Namikaze clan. Three generations, three supreme powerhouses, undefeated in their time.