A good fanfiction about their kiss should have strong character development. It should show how Sasuke has grown to open up to Sakura and how Sakura has patiently waited and supported him. Their kiss should be a natural progression of their relationship.
A really interesting fanfiction could be set in an alternate universe where Sasuke never left the village in Naruto Shippuden. He and Sakura start to develop feelings for each other much earlier. They go through all the challenges of being young ninjas together, and their relationship blossoms as they face various threats to the village side by side, and they eventually get married and have a family.
One possible scenario could be that after a long and difficult battle, Sasuke realizes how much Sakura has always been there for him. In a moment of vulnerability and newfound appreciation, he leans in and kisses her. It's a kiss full of unspoken emotions and a new beginning for their relationship.
One great 'Sasuke Sakura Shippuden Fanfic' is 'A New Beginning'. It shows a different take on their relationship post - Shippuden. The story delves deep into how they deal with the traumas of the past and try to build a future together. The characterizations are really well - done, staying true to their original personalities from the anime.
Fanfictions often depict Sakura's growth in relation to Sasuke by highlighting her emotional maturity. At first, she was a girl with a simple crush on Sasuke. But as the story progresses in fanfictions, she starts to understand Sasuke on a deeper level. She realizes his pain and his reasons for his actions. This understanding makes her more empathetic and also helps her grow as a person. She becomes less clingy and more of an equal partner to Sasuke, which is a huge growth from her initial character in the series.
One popular theme is their relationship development. Many fanfictions focus on how they overcome their differences and past traumas to come closer. For example, some might explore how Sasuke's dark past affects their relationship and how Sakura's unwavering love helps him heal. Another theme could be adventure. They might go on a mission together in a fanfiction, facing new and powerful enemies, and their teamwork and bond are strengthened through this experience. There are also fanfictions that deal with alternate universes, like a modern - day setting where they are normal people dealing with normal relationship issues while still having the essence of their Naruto Shippuden characters.
Love and relationship development is also very common. Many fanfictions focus on how Sasuke and Sakura finally get together. It could start from small glances and shared memories, and then gradually build into a full - fledged relationship. Some might include some jealousy plotlines as other characters are interested in either Sasuke or Sakura.
There are many great authors out there. One popular one might be someone who really captures the essence of Sasuke's brooding nature and Sakura's growth in the Shippuden series. They write in a way that makes the characters' emotions feel real. But it's really subjective as different people like different writing styles.
A good 'Sasuke Sakura Shippuden Fanfic' should have believable character development. Since we already know Sasuke and Sakura from the anime, any changes or growth in their characters should be in line with what we know about them. For example, Sasuke's brooding nature should still be there but perhaps softened a bit in a relationship with Sakura.
There are some good ones on Archive of Our Own as well. Look for tags like 'Naruto', 'Sasuke', 'Sakura' and 'romance'. You might find some interesting takes on their relationships that involve kissing. Just be sure to read the reviews to get an idea of the quality of the story.