One way to develop Naruto is to put him in a situation where he has to protect Eri at all costs. This can bring out his most heroic and self - sacrificing side. You can also show his internal struggle if Eri's actions go against his moral code. For Eri Kitamura, you can develop her character by making her face difficult choices. For example, she might have to choose between her loyalty to her own village and her new - found friendship with Naruto. Through these choices, her true nature and values can be revealed and she can grow as a character.
For Naruto, you can explore his post - Hokage days in relation to Eri. Maybe he's more cautious and wise, and he imparts his knowledge to Eri. You can show his growth in handling diplomatic situations if Eri is from another village. For Eri Kitamura, if she's a new character, you can start by giving her a distinct personality. For example, if she's shy, Naruto can help her come out of her shell. Or if she's headstrong, Naruto can teach her the value of patience.
In fanfiction, Naruto's character can be developed further by showing his insecurities when it comes to relationships. Eri could be the one who makes him face these insecurities. For Eri Kitamura, her character can be developed through her interactions with Naruto's friends. If she has a hard time fitting in at first, but then slowly earns their respect. This can show her growth from an outsider to an accepted part of the group. Also, if she has a special skill, like healing, Naruto can encourage her to use it for the greater good, which will shape her into a more selfless character.
One idea could be a story where Naruto meets Eri Kitamura in a different dimension. Maybe Eri has some unique abilities that Naruto has never seen before, and they have to team up to face a new kind of threat that exists only in that dimension. They could learn from each other's strengths and weaknesses along the way.
For Naruto, you can focus on his growth in a different aspect. Since he already has his ninja skills, in a story with Aplessia, he could develop his emotional intelligence further. For example, learning how to better understand Aplessia's more complex and perhaps different emotional range compared to his friends in Konoha. For Aplessia, you can start by giving her a backstory. Maybe she has a troubled past that made her the way she is, and as she interacts with Naruto, she starts to open up and become more confident.
For Naruto, his growth could be shown in relation to Tigress's no - nonsense attitude. He might become more disciplined in his training. For example, he could learn to control his rasengan better by observing Tigress's precision in her attacks. His character could also become more introspective as he tries to understand Tigress's more reserved personality.
For Naruto, you could focus on his growth in a new environment. Since he's in a different world with Natsuhi, he might have to adapt his ninja skills. Maybe he starts to learn some new techniques from Natsuhi's world. For Natsuhi, you could show her becoming more confident. Naruto's presence and his can - do attitude might inspire her to be bolder. For example, if she was shy about using her powers before, she could start to use them more freely.
In fanfiction, Naruto could be developed by having him face new moral dilemmas when interacting with Yubel. His character could grow by learning about different forms of power that Yubel represents.
In a fanfiction, Dark Naruto could start as a completely unapproachable and angry character. Ino could start by simply observing him from afar. As the story progresses, she could gradually get closer, and through their conversations, Dark Naruto could start to open up. This would show his development from a closed - off, angry person to someone who is more trusting and Ino would also develop as she gains more courage to be around him.
For Naruto, you could focus on his growth as a leader within the group. Show how he takes on more responsibility and uses his experience to guide Fuu and Yugito. For Fuu, develop her backstory more, perhaps exploring her past in her village and how it shaped her. With Yugito, show her struggle and control over the tailed beast inside her in new ways, like having Naruto and Fuu help her find new methods of co - existence. For example, Naruto could share his experiences with the Nine - Tails. This would not only develop the characters but also strengthen their relationships.
For Naruto, his character can be developed by showing his reaction to Rouge's world. Maybe he's shocked by the technology or the different species. As for Rouge, her character can grow by interacting with Naruto's sense of justice. She might start to question her own motives.
Naruto's character can be developed in fanfiction by having him learn from Liara's more scientific and analytical approach. He could become more strategic in his battles. For instance, instead of just relying on his brute strength and chakra, he starts to think like Liara and plan his moves better.
To develop Naruto in this fanfiction, you could focus on his ability to adapt to the new situation with the female Akamaru - like character. He could learn new skills or ways of thinking from her. For the female character, show her evolution from a somewhat wild and instinct - driven being to someone who can make rational decisions. You can also develop her by exploring her relationships with other characters in the Naruto universe aside from Naruto. Maybe she has an interesting dynamic with Shikamaru or Sakura. Show how she changes and grows through these interactions.