Yes, there are such fanfictions in the Naruto fanfiction community. Some fans like to explore unique and creative scenarios in their writing, including this rather unexpected one.
I'm not sure if there is such a specific fanfic. Fanfiction can cover a wide range of scenarios, but cheating themes might not be very common in the Naruto fanfic world, especially considering the strong bond between Sasuke and Naruto. However, with the vast amount of fanfiction out there, it's possible that one exists.
Their relationship would be one of mutual respect. Naruto, as Hokage, would trust Sasuke's abilities as an Anbu member. Sasuke, on the other hand, would respect Naruto's leadership. They would be comrades again, but with a new dynamic due to their different positions in the village.
In such a fanfiction, it could lead to a completely different power dynamic within the ninja village. Maybe Naruto's absence would give rise to new challenges and characters stepping up.
Sorry, as a fan of web novels, my knowledge is limited to the data set I trained, and I can't provide a novel that transmigrated to Naruto and became Naruto or Sasuke. However, I can recommend some similar novels such as Naruto: I am Naruto and Naruto: I am Sasuke. These novels tell the story of the protagonist who transmigrated to the Naruto world to become Naruto or Sasuke and began an unusual adventure.
For novels that transmigrated to Naruto World to become Naruto or Sasuke, you can refer to the following examples:
" Naruto: The Legend of the Nine Tails ": The protagonist is a young man named Li Ming who accidentally transmigrated to the world of Naruto and became the young nine-tailed fox Naruto. In this world, he began to fight against various enemies and gradually grew into a powerful ninja.
2 Naruto Eternity: The protagonist is a young man named Zhang Chen who accidentally transmigrated to the world of Naruto and became the young Uchiha. In this world, he experienced difficult battles with his companions and gradually understood the forbidden technique of the Uchiha clan-Infinite Moon Reading.
Maybe they embark on an adventure to help a small, oppressed village. They use their combined skills to overthrow the tyrant ruling the village and then stay for a while to help rebuild it. During this time, they learn about different ways of life and make new friends. This adventure would strengthen their bond and also their reputations as great shinobi.
The true tale of Naruto and Sasuke is about their journey from childhood enemies to becoming comrades. They overcome personal traumas and external obstacles, evolving and influencing each other's lives profoundly.
The true story of Naruto and Sasuke is one of friendship, rivalry, and personal growth. They start as rivals but eventually develop a deep bond as they face various challenges together.