Kakashi is another character worth considering. He has the Sharigan in one eye and has a lot of experience. His wisdom and combat skills could play a crucial role in the fanfiction. Hinata could also be included. Her gentle nature and Byakugan could create an interesting parallel or contrast to the Sharigan, and her relationship with Kurenai as a fellow kunoichi from the Hidden Leaf could be explored.
Itachi could also be an interesting addition. His mastery of the Sharigan and his mysterious nature would add depth to the fanfiction. Shino could be included as well. Since he is one of Kurenai's students, his presence could create interesting dynamics. He could also provide some unique insect - based combat abilities that could interact with the Sharigan and Kurenai's genjutsu in unexpected ways.
Another storyline could involve a love triangle between a Sharigan - wielder, Kurenai, and another character. The Sharigan - user might be conflicted between his loyalty to his clan's powers and his growing feelings for Kurenai. This could create a lot of drama and internal struggle within the story.
Kakashi would be another excellent choice. His laid - back yet highly skilled personality could work well with Anko and Kurenai. He could provide some comical moments as well as some valuable strategic input in a fanfiction story.
Tenten could be one of the characters. She could be Naruto's friend and also have a bit of a crush on him. Ino might also be present, using her mind - related jutsu to try and understand the complex relationships in the harem. Rock Lee could show up too, providing some comical relief and also being Naruto's loyal friend in the midst of all the relationship chaos.
Definitely Sasuke. His complex relationship with Naruto provides a lot of material for fanfiction. You can explore their friendship, rivalry, and how they grow together. Kakashi is also a great character to include. His wisdom and unique jutsu can add depth to the story. And of course, Sakura. Her growth as a kunoichi and her relationships with Naruto and Sasuke can be interesting to write about.
Naruto himself is a must - he's the main character after all. Sasuke could also be great as his rival. Their interactions around the kit would be interesting, like if they both wanted it for different reasons. Sakura could be included too, maybe she helps Naruto figure out how to use the kit.
Well, in addition to Naruto and Urahara, Ichigo from Bleach could be a great addition. Since Urahara has a connection with Ichigo, and Naruto's energetic and positive nature could create an interesting dynamic with Ichigo's more brooding personality.
Definitely Naruto himself. His determination and positive attitude can bring a lot to the story. Lala too, of course, with her fun - loving and inventive nature. Sakura could also be a great addition. She could interact with Lala in interesting ways, perhaps learning about Lala's technology and applying some of her medical skills to help Lala if she gets injured.
Definitely Kakashi. Since he has a connection to both Naruto and Tobi (Obito), his presence can add a lot of depth. He can be the one who tries to bridge the gap between Naruto and Tobi, or he could be a source of conflict as he has his own history with Tobi.
Definitely Naruto himself. His unique abilities and his never - give - up attitude would add a lot to the story. For Salem's side, Salem herself is a must - include as she is the central figure in her world. Also, characters like Sasuke from Naruto could be interesting as his complex personality and powerful skills would create interesting dynamics. And maybe some of Salem's loyal followers like Cinder could also be included to add more conflict.
Obviously, the Sannin themselves - Orochimaru, Jiraiya, and Tsunade are must - includes. But Naruto can also be a great addition as he has connections to Jiraiya. His presence can add a new dynamic as he looks up to the Sannin and tries to learn from their experiences. Another good character could be Sasuke. His dark past and thirst for power can contrast with the Sannin's different outlooks on power and morality.