Naruto: Infinite Sage Mode from the Start

He transmigrated as a young Nagato and gained an anti-trope System.

Nagato: "Anti-trope? I'll just smash my own Rinnegan. That's anti-trope enough, right?"

As Black Zetsu watched in heartbreak, Nagato smashed one of his Rinnegan.

For this, he received a System reward: the Rumble-Rumble Fruit.

From then on, he was Natural Energy, and Natural Energy was him!

Tsunade: "Is that guy the God of Thunder?!"

Jiraiya: "Infinite Senjutsu Chakra? You've got to be kidding!"

Orochimaru: "He's the reincarnation of a Sage!"

Madara: "After Hashirama died, he became my only worthy opponent!"

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.