Obviously, the main characters are Itachi and Naruto. Itachi, being a highly skilled and complex character from the Naruto series, and Naruto, the protagonist with his own set of powers and determination.
In this fanfiction, it could be that Itachi has some sort of special training method that he uses on Naruto. This method is really tough and Naruto has to endure a lot. As he endures, he might let out involuntary sounds that could be considered moans. The story could then revolve around Naruto's journey to master whatever Itachi is teaching him while dealing with these intense training sessions.
The main characters are Naruto and Itachi. Naruto, who has been on a journey to become Hokage and gain the respect of everyone in the village. Itachi, on the other hand, has a dark past filled with secrets and sacrifices for the sake of the village. Their meeting in the fanfiction creates a lot of interesting storylines and character development.
Sakura is often included. She has her own growth arc in the original series, and in fanfics, it can be further explored, especially her relationship with Naruto and Sasuke. Kakashi too can be a main character. His wisdom and mysterious past make him an interesting addition to any fanfic story.
Kakashi could also play a role. He has been Naruto's mentor for a long time. So, he might have some mixed feelings about Itachi adopting Naruto. He could be suspicious of Itachi's motives at first but then gradually come to understand Itachi's positive influence on Naruto. Their interactions could be really fun to read about, especially when Kakashi tries to give Itachi some advice on how to handle Naruto's wild nature.
In this fanfiction, Itachi is the catalyst for change in Naruto's life. He's the one who provides a new family structure for Naruto. Naruto, being the main character, will experience a different kind of growth with Itachi's presence. His relationship with Hinata will also be affected. Hinata, on the other hand, will have to adapt to Itachi's presence in Naruto's life. She may look to Itachi for advice on how to better understand Naruto and how to strengthen their relationship, while also dealing with her own insecurities and the new family dynamic.
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.
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.
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.
There could also be other supporting characters. For instance, Naruto might make an appearance. Since he's Sakura's friend and also has a connection to Itachi through Sasuke. Naruto could come in to try and stop Itachi from attacking Sakura, adding another layer of conflict and drama to the story. Or Kakashi could be there. He's their teacher and has a good understanding of both Itachi and Sakura's capabilities, so his presence could change the course of the story as well.