Naruto, your uncle is going to be Hokage!

He transmigrates into the body of Minato Namikaze's younger brother, Mirai Namikaze, and masters the four fundamental forces: electromagnetism!
During the Third Shinobi World War, Konoha's Twin Flashes became famous throughout the ninja world.
The yellow flash is incredibly fast; he's the fastest man in the ninja world.
Blue flash hand-crafted railgun, portable simplified Gundam, magnetic field overload.
After disappearing for three years, he returned to find his elder brother and sister-in-law dead, and his young nephew living a miserable life, suffering bullying from the entire village.
Enraged, Namikaze Mirai suppressed Hiruzen, killed Danzo, and quelled Konoha!
Naruto, who was being bullied, suddenly saw a blond figure blocking his way, who turned around and revealed a gentle smile.
"Don't be afraid, my dear nephew, your uncle is very strong!"
(This is the story of a time-traveling uncle who leads his nephew Naruto to conquer the ninja world!)
……
This book is also known as "In Konoha, Leading My Nephew to Destroy the Ninja World!", "The Three-Year Term is Over! Please Bring the Magnetic Field Madman Back to the Village!", and "My Sister-in-Law Kushina".