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.
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.
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.
One idea could be that Naruto and Sasuke team up to face a new and powerful enemy from a different dimension. This enemy has the ability to manipulate time, which throws the entire ninja world into chaos. Naruto and Sasuke, with their combined skills and understanding of each other, start to figure out the enemy's weaknesses. They have to rely on Naruto's Rasengan and Sage Mode, along with Sasuke's Sharingan and Rinnegan powers. Their journey to stop this enemy also involves them reconciling some of their past differences more deeply as they face challenges together.
One common theme is the power of understanding. Since both Naruto and Jinchuriki have a connection to a tailed beast, they understand each other's struggles. Another theme is sacrifice. They might be willing to sacrifice for each other because of their love. For example, in some fanfictions, a Jinchuriki would risk their life to save Naruto or vice versa.
First, focus on their backstory. Maybe they were an orphan who was chosen to be the Jinchuriki and had a tough upbringing because of it. This would shape their personality as someone who is both strong - willed but also has insecurities. Second, explore their relationship with Matatabi. They could start by hating the fact that they're a Jinchuriki but as they get to know Matatabi better, they form a unique bond. Third, show their growth in terms of power. Start with them being unable to control Matatabi's power at all and then gradually become a force to be reckoned with.
The 'naruto jinchuriki of the world eater fanfiction' might center around the Jinchuriki's journey. Maybe they have to face challenges that come with being associated with a 'world eater'. This could involve battles against other powerful forces in the Naruto universe who either fear or want to use the power of the 'world eater' within the Jinchuriki. It could also delve into the Jinchuriki's relationships with other characters, like how Naruto's friends might react to this new and dangerous situation.
Naruto might end up teaming with some of the more sane inmates who have a sense of right and wrong. For example, he could form an alliance with a reformed criminal who wants to help Naruto navigate the complex and dangerous world of Arkham. Together, they could try to expose the corrupt elements within the asylum.
I think Naruto would start by defining what a Jinchuriki is and then share some stories about other known Jinchuriki to make it more understandable for Sarada.