The theme of acceptance is also prevalent. Naruto accepts Fem Sai for who she is, and this acceptance helps Fem Sai to open up. In many fanfictions, there is also the theme of adventure. They go on adventures together, which test their relationship and make them rely on each other more.
These fanfictions usually contain scenes that are more adult - in - nature (the lemon parts), but they also can have a strong plotline. For example, they could be set in an alternate universe where Sai and Naruto's relationship develops differently due to different circumstances in the AU. The stories might also emphasize the unique personalities of Sai and Naruto and how they interact in a more intimate setting.
There might be a fanfiction where Fem Sai is an artist and Naruto is intrigued by her art. She uses her art to communicate in ways that are different from the norm in the ninja world. Naruto tries to understand her art better and in the process, they develop a special bond. Maybe they end up collaborating on a project to create a mural that represents the unity of the village.
You can start by looking on popular fanfiction websites like FanFiction.net. It has a large collection of Naruto - related fanfictions, and you can use the search function to specifically look for stories involving Fem Sai and Naruto. Another option is Archive of Our Own (AO3), which also has a wide range of fan-created content and is known for its organization and tagging system, making it easier to find the exact type of fanfiction you're interested in.
There's also 'A New Path for Sai'. In this fanfiction, Fem Sai joins Naruto on a mission and they start to understand each other better. The story does a great job of exploring Fem Sai's character development in relation to Naruto. It shows how they overcome obstacles together and how their relationship evolves over time. It's really engaging to read.
One plot idea could be Fem Naruto and Sai going on a mission together in a foreign land. They encounter strange new enemies and have to rely on each other's unique skills. Sai, with his art-based jutsu, and Fem Naruto with her strength and determination. Another idea is a story where they are both training under a new master who has a very different style of teaching compared to what they are used to. This could lead to a lot of character growth and new jutsu development for both of them.
One way is to put them in a situation where they have to take care of a young orphan together. This shared responsibility would force them to communicate, cooperate, and rely on each other. Through this, they would see different sides of each other. Sai might show his nurturing side, which Fem Naruto has never seen before, and she would show her motherly - like instincts. This would create a new level of closeness between them that is different from their normal ninja - comrade relationship.
There's a fanfiction called 'Sai's Surprise Affection'. In this story, Sai's character is developed in a new light, especially in relation to his romantic side. It has some lemon elements that add a bit of spice to the overall narrative. But you might have to search through various fanfiction platforms to find it.
The appeal could lie in the novelty. Since Naruto is male in the original, making Naruto female changes the whole dynamic. The lemon part might add a bit of a romantic or sensual allure for some readers who enjoy that aspect in fanfiction.
A lot of such fanfictions might deviate from the canon quite a bit. With 'fem Naruto', the power dynamics and emotional connections with Sakura could be reimagined. Some may focus on their friendship evolving into something more romantic, while others might explore more complex storylines involving other characters in the Naruto universe as well.