Love triangles are a very common theme. Sasuke is often at the center of the attention of both Sakura and Karin, which creates a lot of tension and drama.
One common theme is the exploration of unrequited love. Sakura's love for Sasuke is well - known, and when he leaves her for Karin, it delves into the pain of unrequited love from Sakura's perspective. Another theme is the idea of choosing based on power and usefulness. As Karin has certain powers that can be of help to Sasuke, it shows a theme of practicality in relationships.
A common theme is redemption. Sasuke has a complex past, and many fanfics focus on how Sakura helps him find redemption and come back to the side of good. Another theme is love conquers all. Despite all the hardships and differences between them, their love is shown to be strong enough to overcome any obstacle.
The theme of sacrifice is quite common. Sakura has always been willing to sacrifice for Sasuke, and this is often highlighted in fanfics. Another theme is the power of second chances. Sasuke getting a second chance at life in the village and with Sakura is a frequent plot point. Also, the theme of healing. Both of them have emotional scars, and fanfics often deal with how they heal each other's wounds.
One common theme is redemption. Sasuke has made many mistakes in the past, and fanfics often explore how he can redeem himself in Sakura's eyes and in the eyes of the village. Another theme is love conquers all. Despite all the hardships they've faced, their love is shown to be strong enough to overcome any obstacle.
Love and relationship are very common themes. Most fanfics explore how Sasuke and Sakura's relationship develops over time, whether it's a slow - burn romance or a more immediate connection.
I don't have specific knowledge about the common themes in 'karin x sakura lemon fanfic' as it depends on the creativity of the writers. But friendship or adventure could be possible themes.
The theme of cooperation also pops up a lot. Since they have different abilities, fanfictions often explore how they can work together. For instance, Sakura's knowledge of herbs and healing combined with Karin's knowledge of the chakra flow can lead to some interesting storylines where they solve problems or face enemies as a team.
Well, it could be a story about their complex relationships. Maybe it shows how they interact in a post - war Naruto world. Sasuke might be in the middle of Sakura's love and Karin's lingering feelings for him.
In the realm of fanfiction, almost any scenario is possible. Regarding Sasuke divorcing Sakura for Karin, it may exist. Fanfiction authors draw inspiration from the source material and then take it in new directions. The idea might stem from Karin's past feelings for Sasuke and some fans' desire to see how such a relationship shift would impact the characters. It could also be a way to explore the characters' personalities more deeply, for example, how Sakura would cope with such a betrayal and how Karin would handle being with Sasuke in that context.
There probably is. Fanfiction writers like to take existing characters and create different storylines. But it's important to note that this isn't part of the official Naruto story. In the original, Sasuke and Sakura are a couple, and Karin has her own relationship with Sasuke which is more of comradeship in the official plot. Fanfiction just gives people the freedom to deviate from the original.