One common theme is redemption. Since Obito has done a lot of bad things in the Naruto series, many fanfics focus on him trying to make up for his mistakes. Another theme is love, whether it's his love for Rin that drives his actions or new relationships he forms.
There's a fanfic called 'Obito: A New Path'. In this, Obito decides to take a completely different route from his previous actions. He teams up with Naruto earlier on and they start to change the shinobi world together. It's really interesting to see how his character develops in this new scenario compared to the canon story.
In this fanfic, Obito's character development could be quite interesting. He starts as a young, eager ninja with big dreams. But after his experiences, he may become more jaded and vengeful. Kakashi, on the other hand, may develop from being a cold - ish ninja to someone more understanding and empathetic towards Obito as the story unfolds in the fanfic.
The relationship in 'Obito Uchiha x Kakashi Hatake Fanfic' can be seen as a study of contrast and connection. Their bond was initially based on being comrades. However, as the story progresses in the fanfic, it could show how their divergent paths, like Obito's fall to the dark side, affected their relationship. It might also explore themes of forgiveness and redemption as Kakashi may have to face his old friend who has now become an enemy.
Well, it depends on the specific fanfic. There are countless fanfictions out there, and some might indeed have a plot where Naruto has a secret connection to the Uchiha clan. Maybe it's a result of some hidden family ties or a magical spell that makes him related to them in some way.
A different fanfiction could involve a magical experiment gone wrong that transports Harry Potter to the Naruto world where he meets Obito. Harry, with his knowledge of magic, and Obito, with his ninja skills, have to find a way back to their respective worlds. Along the way, they learn from each other's cultures and abilities. Harry could teach Obito about some basic spells, and Obito could show Harry some ninja techniques like how to move stealthily or use a kunai effectively.
One great Obito Uchiha time travel fanfiction is 'A New Chance for Obito'. In this story, Obito travels back in time and tries to prevent the tragedies that befell the Uchiha clan. It's really engaging as it shows his internal struggle to change things while not disrupting the entire timeline too much.
There's also 'Obito's Unlikely Bond'. In this fanfic, the OC is a healer who stumbles upon a wounded Obito. Their relationship starts off rocky but gradually turns into something deeper. The story does a wonderful job of exploring Obito's complex emotions and how the OC helps him come to terms with his past. It's a really heartwarming read.
Yes, there might be. There are many creative fanfiction writers in the world who like to combine different fictional universes. Some might have come up with the idea of integrating Harry Potter and Obito Uchiha. You can try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own to see if there are any such stories.
A major theme is the power of forgiveness. Naruto is all about forgiving others, and when it comes to Obito, this theme is often explored. How can Naruto forgive Obito for all the harm he has caused? Also, the theme of changing one's fate. Obito's fate seems set in the original story, but in fanfics, he often tries to change it with Naruto's influence. There are also themes related to the understanding of different ideologies as Naruto and Obito have very different outlooks at times.