The Flash is often considered one of the fastest speedsters in fiction. He can run at super - human speeds, allowing him to do things like vibrate through solid objects, run on water, and travel back in time. His speed is so great that he can outrun almost any opponent in the DC Comics universe.
It's hard to determine a single fastest speedster as it varies across comic storylines. However, popular contenders include characters like Quicksilver and Zoom, each with their unique speed abilities and feats.
A possible fanfiction could be centered around the Jinchuriki's role in a major battle. For example, in a war against an enemy ninja force, the Jinchuriki could unleash Matatabi's power in a strategic way to turn the tide of the battle. They might combine Matatabi's fire - based attacks with other ninja techniques they've learned, like water - style jutsu to create a steamy and powerful defense or offense. Also, their bond with Matatabi could give them an edge in terms of sensing the enemy's moves before they happen.
Gaara is a very likely recipient. He was a Jinchuriki like Naruto and they have a strong bond. Naruto might send him letters to check up on him and continue their friendship.
Among the speedsters in DC Comics, many consider The Flash (Barry Allen) to be the fastest. His speed powers are legendary and he's been at the forefront of many speed-related storylines.
It could also be a form of building alliances. By reaching out to the Jinchuriki through letters, Naruto is establishing a connection. This can be important in the Naruto universe where having allies is crucial for the safety of the villages and the world at large. He may be hoping to create a united front among the Jinchuriki against common enemies.
Yes, there are quite a few. You can check out platforms like Fanfiction.net or Archive of Our Own. Some popular ones might focus on Naruto's relationship with the Nine - Tails' Jinchuriki form. For example, stories where they develop a deep emotional bond through shared experiences and battles.