Kakashi could also be included. He has a history with Obito, and his relationship with Itachi was also complex. His skills and his role as a mentor - like figure can bring a different dynamic to the story. For example, he could be the one who suspects something strange is going on between Itachi and Obito and tries to figure out their motives.
One idea could be a story where Itachi and Obito are forced to team up against a new, powerful enemy that threatens the ninja world. They start off distrusting each other due to their past actions, but as they face challenges together, they gradually come to understand and respect one another.
Well, it could be about Kakashi finally finding Obito after a long search. Maybe Obito has changed a great deal, and Kakashi has to come to terms with this new version of his old friend. They might have a battle first due to their different paths, but then they start to talk and remember their past together, like their time as teammates in Team Minato.
One common theme is redemption. Since Obito has done a lot of bad things, in many fanfictions Sakura becomes a catalyst for his redemption. For example, she might show him the good in the world again.
One possibility in the 'naruto meets obito fanfiction' is that Naruto and Obito meet in a different dimension. Naruto is shocked at first to see Obito in this new setting. Obito, on the other hand, is still full of anger and resentment. But Naruto, through his unwavering belief in the goodness of people, starts to break down Obito's defenses bit by bit. They might exchange stories about their lives, with Naruto sharing his dreams of peace and Obito revealing his past traumas. Eventually, this could lead to a change in Obito's character.
In the 'Sarada meets Obito fanfiction', it's possible that Obito could see some of his old self in Sarada. Maybe he decides to mentor her in a way, sharing his knowledge of the Sharingan and combat techniques. Sarada, being eager to learn and improve, could be receptive to this, leading to a unique bond between them.
In a fanfiction where Team Minato meets future Obito, it could be a very emotional encounter. Minato might be shocked to see how Obito has changed. Obito, having experienced so much in the future, could bring warnings about future disasters. For example, he might warn about the upcoming threats to Konoha. Team Minato would have to grapple with the knowledge that Obito is no longer the person they once knew.
Itachi would probably be very calm and composed. He might see Sarada as a symbol of the new generation of ninjas in the village. He could be gentle with her, perhaps sensing her potential and her desire to grow as a ninja.
The fanfiction might explore their relationship by delving into their past memories. For instance, it could show how Kakashi's actions in the past affected Obito and vice versa. They could have long conversations about how they felt when certain events happened, like when Kakashi got the Sharingan. This would help them understand each other better and strengthen their bond.