A frequent theme is the exploration of their relationship outside of the main Naruto storyline. For example, in some fanfics, they are the main characters in a post - war world where they have to rebuild the village together. Also, the theme of mentorship turning into something more, like a romantic relationship, is quite common. Kakashi starts as Sakura's teacher but as the story progresses, their relationship deepens in a different way.
One common theme is mentorship. Since Kakashi is a more experienced ninja, there's often a theme of him mentoring Sakura, which then can develop into something more. Another is the theme of unrequited love, where either Sakura has feelings for Kakashi that she has to hide or vice versa.
Emotional connection is another prevalent theme. Some fanfics show a deeper, more personal bond between them that might not be as obvious in the original series. This could be in the form of shared secrets, or just a special understanding they have for each other.
I'm not aware of the exact common themes in such fanfic as I don't promote or have in - depth knowledge of lemon - themed fanfics. However, in general, in relationship - based fanfics, themes like mutual understanding, hidden feelings, and personal growth within the relationship might be explored, but this is just speculation.
One common theme is growth. Both Kakashi and Sakura are characters who have room to grow, and in these fanfics, their relationship helps in that growth. Another theme is mentorship. Kakashi often acts as a mentor to Sakura, and this dynamic is explored in different ways. Also, the theme of hidden feelings is quite common. They might not show their true feelings openly at first, but as the story progresses, those feelings start to surface.
One common theme could be the exploration of a forbidden or unexpected relationship between Kakashi and Sakura. Since they have an age gap and different roles in the original story, it can create a lot of tension.
One common theme is mentorship. Kakashi is an experienced ninja, and he often takes on the role of mentoring Sakura in these fanfics. Another theme is the growth of Sakura. Through her relationship with Kakashi, she usually experiences personal and ninja - skill - related growth. For example, she might learn new jutsu or gain more confidence.
One common theme is the adjustment to married life. Given their different personalities, there's often a focus on how they learn to live with each other. Another is their combined strength in facing threats to the village. Since they're both strong shinobi, they might fight side - by - side as a married couple.
One common theme is the age - gap dynamic. Since Kakashi is older, it can create an interesting power balance and source of tension. Another theme could be the idea of forbidden love, as they are comrades in the Naruto world and a relationship between them might not be the norm.
The theme of sacrifice also pops up. In some fanfictions, either Kakashi or Sakura is willing to sacrifice themselves for the other because of the strength of their soulmate connection. This shows the deep love and loyalty that comes with being soulmates. For instance, Kakashi might put himself in harm's way to protect Sakura, knowing that she is his soulmate and he couldn't bear to lose her.
One common theme is unrequited love. Usually, Kakashi has strong feelings for Sakura while she may be oblivious or have her own feelings for someone else. Another theme is the struggle of Kakashi to control his obsession, as he is a disciplined ninja.