Takumi transmigrates into the Hokage world and awakens a battle royale game System. By winning the game, he can bring the ninjutsu in his backpack back to the world of Naruto.
Kakashi's version of the Mangekyō Sharingan, Kakashi's S-rank Lightning Cutter...
Minato Namikaze's version of the Flying Thunder God Technique: Second Step, Minato Namikaze's Rasengan, Minato Namikaze's Sage Mode...
As Takumi grows stronger with each passing day, Madara Uchiha is brought back with Impure World Reincarnation during the Fourth Shinobi World War. Waiting for him is a Wood Release Great Buddha, equipped with Flying Thunder God teleportation and empowered by monstrous strength, with Susanoo-clad figures eager to join the fight at its side.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
Minato, that's Kyuubi mode,**
I think Tiantian is pretty good
I can't see anything yet, so I'll keep it for now.