A Fei-chan Arrives in His Loyal Warring States Era

Madara was dead.

Young Obito buried Madara, walked out of the cold, gloomy cave, and set off for the Land of Rain. He would sow discord, stir up war, kill his teacher... and bury everything from his past.

He opened his eyes.

"Madara-nii? Madara-nii?"

"...Huh?"

Why had he suddenly appeared in the Uchiha clan's territory during the Warring States era?

Why was some kid with a little ponytail calling him Madara?

He thought it through carefully.

First, rule out the possibility that he'd transmigrated.

Then, Madara was a master planner and had already arranged everything for him.

So...

He understood. This was a trial Madara had set for him. This world was an illusion Madara had left behind. Only by truly living Madara's life could he replace Madara and play the role perfectly! That's right, he was Uchiha Madara!

Reborn Tobirama: ...

Izuna, who transmigrated from a modern AU: ...

The original, secretly dark Hashirama sharing a body with Madara: Awesome!

The real Madara: Who the hell are you?!

PS: A chaotic Warring States world, a thoroughly confused Black Zetsu, and the second-round Team 7 in the original world, waiting for the Fourth Great Ninja War until the end of time, but never getting it.

Theme: Perseverance can wear through wood, and a dripping drop of water can pierce stone