One of the most popular is 'Naruto Shippuden: Sakura Hiden - Thoughts of Love, Riding Upon a Spring Breeze'. It's popular because it shows Sakura in a new light, with her own adventures and growth.
I don't think it's strange at all. Naruto is a very curious person. Fanfiction can offer new perspectives on his own life and the lives of his friends. He might learn something new about himself or get inspired by the creative ideas in the fanfiction. It could also be a form of entertainment for him during his downtime.
A Naruto x Hinata fanfiction could focus on a mission they go on together during Naruto Shippuden. They are forced to rely on each other in a dangerous situation. Hinata gets injured protecting Naruto, and Naruto is filled with a new - found determination to protect her. This experience deepens their bond, and Naruto starts to see Hinata in a whole new light, leading to the start of their romantic relationship.
Well, normal Naruto Shippuden fanfics are likely to be centered around the adventures, growth, and battles of the characters. They might explore different what - if scenarios within the framework of the Naruto universe. But 'naruto shippuden diaper fanfic' is likely to be more of a novelty or a very specific and strange take on the characters. It might not have the same depth or connection to the original story as normal fanfics do. For example, normal fanfics could focus on how a character overcomes a difficult battle, while a 'diaper fanfic' would be more about a really odd situation involving diapers which has little to do with the main Naruto themes.
Another interesting novel is 'Naruto Shippuden: Kakashi Hiden - Lightning in the Icy Sky'. It focuses on Kakashi's story and his past, which is really fascinating. There are a lot of details about his relationships and his growth as a ninja.
Well, Naruto Shippuden 2's full story is a long and exciting tale. It begins with Naruto coming back to the village after his training. He's more powerful but also faces more challenges. The Akatsuki is on a mission to capture the tailed beasts, which puts Naruto and his friends in a difficult position. There are sub - plots involving other characters like Sasuke and his own journey of revenge. Throughout the story, we see Naruto's character develop not just in terms of power but also in his understanding of the ninja world and his place in it. His relationships with characters like Sakura, Kakashi, and others also evolve as they face numerous trials together.
I really like 'The Uchiha's Redemption'. It focuses on Sasuke's journey in a different light. Instead of just his revenge plot, it delves deeper into his internal struggles and his attempts to atone for his past mistakes. It's a great read for those who want to see more depth in Sasuke's character.