In some 'Naruto Immortal God' fanfics, Naruto's immortality might be tied to a prophecy. He has to fulfill certain tasks as an Immortal God, like uniting different dimensions or saving the world from a greater threat that only his eternal existence can combat.
There could be a fanfic where Naruto becomes an Immortal God and then has to deal with the consequences of his newfound immortality. For example, he may see all his friends pass away while he remains, leading to a very lonely existence at first until he finds new purpose in mentoring generations of new ninjas.
One interesting idea could be Naruto achieving a new level of power that makes him seem like an immortal god. For example, he might gain the ability to control time, which is a very cool concept in fanfiction. It could add a whole new layer of complexity to his battles and relationships.
One interesting 'Chuck is God' fanfic could be one that explores the relationship between Chuck and the other characters in a more in - depth way. It might show how his being God affects their daily lives and interactions. For example, it could depict how Sam and Dean react when they fully realize Chuck's true nature.
You can start by looking on popular fanfic websites such as Fanfiction.net or Archive of Our Own. Use the search function and type in 'Naruto Immortal God'. Then, look at the ratings and reviews of the fics that come up to determine which ones might be good.
One popular 'Naruto God Uchiha' fanfic could be 'The Ascent of the Uchiha God'. It often features the Uchiha character achieving extraordinary powers and facing new challenges in the Naruto universe. Another might be 'Uchiha's Divine Path' which delves into the Uchiha's journey to god - like status and how it impacts the world around them.
A great 'Twilight Sparkle immortal fanfic' could be about how she outlives all of her friends. It would be a rather bittersweet story, with her having to carry on their legacies. She might struggle with loneliness at first but then find new purpose in mentoring generations of young ponies, passing on the wisdom she gained from her long - lived experiences.
A great 'God of War' reaction fanfic might explore the reaction of Atreus to his father's past deeds as they are gradually revealed. He could be shocked, angry, or even more determined to make amends for his father's wrongs. Also, fanfics could show the reaction of the enemies when they face a more strategic and less brutal Kratos. They might underestimate him at first, thinking he's lost his edge, but then quickly realize he's still a formidable foe.
One interesting crossover could be a scenario where Naruto characters gain the powers of Fairy Tail's magic. For example, Naruto using Fairy Tail's fire magic in addition to his own Rasengan. It would create a whole new level of combat and strategic possibilities. Another could be a story where the immortality aspect from Naruto combines with Fairy Tail's world, like an immortal character from Naruto existing in the Fairy Tail guild and influencing the guild's adventures and relationships with their own unique abilities and knowledge.
Some fanfics focus on the relationship between Naruto and Tsunade in a more emotional way. Tsunade could see Naruto as a reminder of her lost loved ones, like her younger brother Nawaki. This connection could lead to her being more protective of Naruto, and the fanfic could explore how Naruto responds to this mother - like figure in his life. It could also show how their relationship evolves over time as Naruto grows into a more mature ninja.
One interesting Kiba and Naruto fanfic could be one where they go on a special mission together that's not in the original story. They might face a new and powerful enemy, and their teamwork makes them overcome it.
There might be a fanfic where Kusanagi is involved in a time - travel plot. He could go back in time and change some crucial events in the Naruto universe, which would then have a ripple effect on the entire story and the relationships between different characters. This type of fanfic often offers a fresh perspective on the original Naruto storyline.