【Everyone Survives + Two Seventh Hokages + Unmatched Beauty + Sharp Minds + Ultimate Feel-Good Story + No Female Lead + Friendship and Family Bonds for Everyone】
In his first life, he died saving his friends in the Naruto world and transmigrated to the Demon Slayer world. In his second life, he saved every Hashira and resurrected their deceased friends and family. As the price, Nagisa erased his existence from the Demon Slayer world. After disappearing from that world, Nagisa returned to Konoha with the System's help, resuming his first life's identity as an orphan of the Uzumaki Clan: Uzumaki Nagisa. Blessed with a face that captivated men and women throughout the shinobi world, he was also Tsunade's most prized apprentice, with a natural Yin Seal! On the surface, he was a gentle, healing “silver-haired medical saint,” but beneath that facade was a scheming tactical genius who had planned for every contingency.
Having lived three lives and knowing the whole story, this time he would use Medical Ninjutsu to snatch people from the jaws of death! Uchiha Itachi is terminally ill? A lung transplant and detox, and while we're at it, recruit him as the strongest ally! Jiraiya lies dead at the bottom of the sea? Regrow his arm and bring him back in Sage Mode at full strength! Neji's death? The Hyuga tragedy? I'll smash the Caged Bird Seal and make sure everyone lives to see the finale!
Naruto: “Nagisa, I want to become Hokage!” Nagisa smiled and stood beside him, casually shattering Kaguya's seal. “Then let's do it together. You'll be the Seventh Hokage, and so will I.”
The story ends with two Hokages taking the throne! Konoha enters a golden age of “dual rule”!
Note: The protagonist has silver hair despite his Uzumaki Bloodline. That's my own headcanon: he was born with powerful Yin Release abilities, and the Yin Release Chakra in his body greatly exceeds his Yang Release Chakra, making him naturally white-haired.
