It could also be a mystery - centered plot. The Akatsuki sister might hold some secrets that Naruto and Kurenai need to uncover. This could involve secrets about the Akatsuki's true goals, or perhaps some long - lost jutsu that she is aware of. As they work together to solve the mystery, they grow closer as comrades.
Another idea is a redemption arc for the Akatsuki sister. Naruto, with his positive influence, and Kurenai, with her skills and wisdom, could help the sister break free from the dark ways of the Akatsuki. They might go on a journey to find a new purpose for her life outside of the organization.
One possible storyline could be a story of friendship and alliance. Maybe Naruto and Kurenai team up with an Akatsuki sister who has a change of heart. They could fight against the more evil elements within the Akatsuki together.
Naruto would probably be initially cautious but also curious. He has a knack for seeing the good in people, so he might try to befriend the Akatsuki sister. Kurenai, on the other hand, would be more guarded. She is a more experienced ninja and would be wary of any Akatsuki member. But she also might see an opportunity to gain intel from the sister.
One possible storyline could be Naruto joining Akatsuki and developing a complex relationship with another male character within the group. Maybe there's a lot of internal struggle as he tries to balance his newfound loyalty to Akatsuki with his previous values. Another could be a story of friendship turning into something more between Naruto and an Akatsuki member over the course of various missions and shared experiences.
One possible storyline could be that in a mission gone wrong, Kurenai accidentally uses a jutsu that ends up hurting Naruto. Maybe she misjudges the situation and her genjutsu affects Naruto in an unexpected and harmful way.
Well, it could be about Kurenai having some secret connection to Naruto as his sister. Maybe she discovers this truth and has to deal with the implications. For example, she might have to protect Naruto from new threats while also coming to terms with her new - found family relation.
A possible storyline is that Naruto discovers a hidden connection between Kurenai and Anko. Maybe there was a past event that they never fully shared with others. Naruto, being the curious one, starts to dig deeper. As he does, he uncovers secrets that not only change his perception of them but also reveals a greater threat to the village. This could involve some sort of dark past related to their training or a previous mission that went wrong. The three of them then have to face this new threat together, with Naruto using his new - found knowledge to help them strategize and overcome the danger.
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.
One possible storyline could be that Naruto's sister is also a ninja. She might be secretly trained by someone in the village, like an old hermit. And she could be very powerful, having a unique jutsu that even Naruto is amazed by. Maybe she has to hide her identity at first to protect Naruto from some unknown threats in the ninja world.
Family. It could focus on how Naruto and Kurenai form a new family with the baby. They learn about parenting, love, and sacrifice.
Another storyline could involve the female Akatsuki member using Naruto's situation of being neglected to her advantage. She could try to convince him to join the Akatsuki, promising him a place where he would be valued. However, Naruto would have to struggle with the moral implications of joining a group that is considered evil. As the story progresses, he might end up changing the Akatsuki from within instead.
Another storyline could be that the Akatsuki, seeing baby Naruto as a valuable asset, try to raise him as one of their own. But Naruto's innate sense of justice, which is there even as a baby, starts to change the Akatsuki from within. He might influence them to question their more villainous actions and motives.