In these fanfictions, a common theme is redemption. If Sasuke has made some wrong choices, the story might focus on how Kakashi and Naruto help him find his way back. Also, teamwork is a big theme. How the three of them work together in different missions or challenges, and how their individual strengths and weaknesses play into that. It can also be about family - like relationships, as Kakashi can be seen as a father figure to some extent, and Sasuke and Naruto as brothers.
In 'Kakashi x Sasuke x Naruto Fanfiction', the relationships are often complex. Kakashi is a mentor figure to both Sasuke and Naruto. Sasuke and Naruto have a deep and evolving bond. Fanfictions might explore how Kakashi's guidance impacts their relationship, and how Sasuke and Naruto's friendship grows or is tested in different scenarios. It could also show how Kakashi's own past experiences influence his interactions with the two boys.
One common theme is the exploration of their relationship in different scenarios. For example, in some fanfictions, they might be in a secret relationship while dealing with the threats in the ninja world.
One popular Naruto x Sasuke x Sai yaoi fanfiction is 'The Unlikely Bond'. It delves into the complex relationships between the three characters. It shows how Naruto's positive energy, Sasuke's brooding nature, and Sai's unique personality interact in unexpected ways within a romantic context.
One common theme is friendship. They start as rivals but then develop a deep friendship. Another theme is trust. As they face various challenges, they learn to trust each other. Also, there's the theme of redemption. Sasuke has his journey of redemption and Naruto is often there to support him through it.
One common trope is the 'opposites attract' situation. For example, a shy and gentle uke Kakashi might be paired with a bold and brash seme character. Another trope could be the 'forbidden love' aspect, perhaps due to clan differences or their roles within the ninja world. Also, the 'hurt/comfort' trope is popular, where the uke Kakashi gets injured or is in a difficult situation and the other character comes to his rescue and they grow closer through that experience.
First, you need to have a clear understanding of the characters, especially Kakashi. Know his personality, his backstory, and his relationships in the original series. Then, think about the relationship dynamic you want to create between him as the uke and the other character. Sketch out a basic plot, like how they meet and what kind of situations will bring them closer.
I don't think it's appropriate. Fanfiction should be a creative space that respects all the characters. Sakura has her own role and development in the Naruto story. Focusing on Naruto x Sasuke yaoi while bashing her is not a good practice. It can make fans who like Sakura feel excluded and it also distorts the overall message of friendship and growth in the Naruto universe.
I'm not really into this type of fanfiction, but you could try looking on popular fanfiction websites like Archive of Our Own. They usually have a wide variety of fan - made stories, and you can use the search function to specifically look for Naruto x Kakashi yaoi stories. Just keep in mind to respect the rules and ratings of the site.
Some Naruto x Kakashi yaoi fanfictions might also be found on Archive of Our Own (AO3). It has a wide range of fan - created works. You could search by the characters' names and the genre. However, not all of them might be of high quality, so you may need to read a few previews to find the ones that suit your taste.