Definitely include Obito. His complex relationship with the Uchiha clan and his own history with the Anbu - like Akatsuki could create some interesting plot twists. Additionally, Kurenai could be added. She could be involved in a mission where she has to work with Itachi and Naruto. Her genjutsu skills might come in handy during a crucial part of the story. And don't forget about Rock Lee. His determination and unique fighting style could add some action - packed scenes to the fanfiction, especially if he gets involved in a mission with Itachi and Naruto.
Their relationship could be developed through a series of flashbacks. For instance, Itachi could recall moments from Naruto's childhood that he observed while in the ANBU. These memories could make him see Naruto in a new light. Meanwhile, Naruto could learn about Itachi's past and the sacrifices he made. This exchange of knowledge could build a bond between them based on empathy and respect. In addition, they could train together in secret, with Itachi teaching Naruto some of his ANBU skills, which would also strengthen their relationship.
One idea could be exploring Itachi's time in ANBU and how Naruto might have influenced his decisions secretly. Maybe Naruto, with his unique way of seeing people, could have made Itachi question his path in the ANBU more deeply.
A good fanfiction might explore how Female Naruto, with her goal of being recognized in the ANBU, catches Itachi's attention. Itachi, being a highly skilled and respected ANBU member, could act as a mentor to her in some aspects. He might teach her advanced combat techniques or how to better analyze the enemy. Their relationship could be filled with tension at first, as Naruto tries to prove herself to him, but later turns into a deep and meaningful connection.
There could be Sasuke. Since Sarada is his daughter, he might be in the background, either not aware of the encounter yet or on his way to find Sarada. Naruto could also be a character. He has a connection to both Itachi and Sasuke, and he might play a role in the events that lead up to or follow the encounter. Another possible character could be Sakura. As Sarada's mother, she would be worried if Sarada was out of her sight and her actions to find Sarada could be part of the story.
The main characters are obviously Itachi and Sakura. Itachi is a complex character from the Uchiha clan known for his powerful Sharingan abilities. Sakura, on the other hand, is a skilled kunoichi who has grown in her medical and combat abilities. In this fanfiction, they are usually placed in the context of the ANBU, which is a special and secretive part of the ninja world.
In some fanfictions, it could be through a special jutsu or ritual. Maybe Itachi, before his death, transferred his Sharingan to Naruto in a unique way, perhaps using a forbidden technique that was known only to a few in the Uchiha clan.
One plot idea could be exploring Itachi's time in the Anbu in more detail. For example, showing his first difficult missions and how they shaped his views on the village and his family. Maybe he has to make a choice between following a cruel order from the higher - ups in the Anbu or protecting an innocent. Another idea is a story where Naruto somehow gets a glimpse into Itachi's Anbu past through a special jutsu or a shared dream. This could lead to Naruto having a new understanding of Itachi and changing his perspective on him.
One possible plotline is that Fem Naruto and Itachi are assigned to protect a valuable village asset. Along the way, they face numerous enemies and have to work together to overcome them. As they fight side by side, they start to respect each other's abilities more.
Itachi is often one of the best - written characters. His complex backstory and motives are explored in depth in many fanfictions. Naruto also shines as he tries to understand Itachi better. In some fanfictions, Sasuke's role in relation to Itachi and Naruto is also well - developed, as he is caught in the middle of their relationship.
Sasuke can also be a significant character in such fanfictions. His relationship with both Itachi and Naruto adds another layer of complexity. His desire for revenge against Itachi and his complex friendship with Naruto can create interesting sub - plots. He might be a source of conflict or a character who eventually comes to understand the relationship between Itachi and Naruto.