The Great Love Immortal in Naruto

(Naruto fanfic + Gu cultivation + No system + No heroine + Dark theme + Extreme self-interest)

(Note: You don’t need to understand Gu techniques to enjoy the story, the protagonist’s Gu are all based on elements from the Naruto world.)

Fang Yan transmigrated into the Naruto world, expecting the usual protagonist treatment:

Admiring beauties? Bonds of friendship?

What he got instead was the surgeon's scalpel in the Root laboratory and brutal death training.

His only lifeline, were the Gu worms inside his body.

To survive, Fang Yan must stop at nothing.

Friends? Heroines?

They’re nothing more than fodder for refining Gu!

He devours Root. He devours Konoha.

He devours the entire Shinobi world.

“Fang Yan, you’ve gone astray. It’s not too late to turn back!”

But just when everyone believes the battle is over, Fang Yan raises a single finger and shatters every illusion.

“Turn back? I, Fang Yan, have never done a single thing wrong in my life. Why would I repent?”

In that moment, all the cocoons on the battlefield burst open

A flood of chakra from ten thousand bodies surges into Fang Yan.

“A raft of blood sails the River of the Dead,

A thousand corpses form a ladder to the heavens.

Ten thousand Gu devour my soul, yet I have no regrets.

I will prove the Gu Dao and defy the heavens themselves.”