There probably is. Fanfiction is a vast world where all kinds of ideas are explored. Since Naruto and Jiren are from different anime universes, a fanfiction about Naruto being a fan of Jiren could be really interesting. It might involve Naruto somehow learning about Jiren's power and being in awe of it. Writers could play around with different scenarios like Naruto trying to train like Jiren or even seeking his advice in the fanfiction world.
One possible plot could be that Naruto, through some sort of interdimensional rift, witnesses Jiren's power during the Tournament of Power. He becomes so impressed that he starts to study Jiren's fighting style and tries to incorporate it into his own ninja techniques. This could lead to Naruto facing some resistance from his friends and teachers who don't understand his new fascination, but Naruto persists in his pursuit to become stronger like Jiren.
One key element is the near - extinction of his race. This event had a profound impact on him and motivated his pursuit of strength. Another is his membership in the Pride Troopers, which shaped his fighting style and his sense of justice. Also, the destruction he witnessed in his youth is an important part of his back story.
Jiren is a powerful warrior from Universe 11 in Dragon Ball Super. His back story is centered around his quest for justice and strength. He comes from a race that was nearly wiped out. This tragic event in his past made him determined to become stronger so that he could protect what was left. He trained rigorously under the Pride Troopers and became one of the strongest beings in the multiverse. His sense of justice is unwavering, and he believes that true strength should be used to uphold order and protect the innocent.
Jiren's back story is that he comes from a race that was nearly wiped out. He was left as one of the few survivors. His experiences made him extremely strong and he dedicated himself to training hard to become the mightiest warrior, believing that only strength can protect and bring justice.
In this fanfiction, Goku vs Jiren is likely to be an epic battle. Goku's power with the Universe's Watch might bring new and unexpected abilities. Jiren, on the other hand, is an extremely powerful opponent. The fight could involve intense energy blasts, high - speed combat, and strategic maneuvers. It might also explore the growth of Goku's character and his newfound power in relation to Jiren's unwavering strength.
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