Yes, there are likely many Kingdom Hearts Sora and Kairi kiss fanfictions out there. Fanfiction platforms are full of various interpretations of the relationship between Sora and Kairi. You can start by checking popular fanfiction websites like Archive of Our Own or FanFiction.net.
One possible fanfiction idea could be that Sora and Kairi go on a journey through different worlds in the Kingdom Hearts universe, facing challenges together. Along the way, they realize their feelings for each other are deeper than friendship. They share quiet moments under starry skies in different magical lands, and their love becomes a source of strength for them to face the Heartless and other enemies.
Donald and Goofy are also frequently seen in these fanfictions. They add a bit of humor and are loyal companions to Sora. Sometimes, new original characters created by the fanfic authors can also become popular. These characters might be introduced to help Sora and Kairi in their quests or be antagonists that create more drama.
Some fanfictions might have a storyline where Sora and Kairi finally get a chance to have a normal life for a while. They could be in a small, peaceful world where they go on dates, learn about each other's dreams, and just enjoy the simple things. But of course, trouble always finds a way to disrupt their peace.
Some fanfictions might take a more creative turn. Maybe there's one where Sora and Kairi get transported to a completely different realm, like a modern - day city on Earth. In this new setting, they have to adapt while still relying on their bond with each other. They learn about new things and in the process, their relationship deepens in unexpected ways.
One key element is their friendship. It's often at the center of these fanfictions, showing how they support each other through difficult times. For example, when Sora is in a tough battle, Kairi might be there to give him the strength he needs.
One great fanfiction could be where Sora and Kairi go on a journey to a new, uncharted world within the Kingdom Hearts universe. In this story, they might face a new kind of Heartless that has unique powers. They could learn more about each other's strengths and weaknesses and their bond could grow stronger as they fight side by side.
You can start by looking on fanfiction - specific websites like Archive of Our Own (AO3). There are tons of Kingdom Hearts 3 fanfictions there, and you can easily search for ones specifically about Sora and Kairi. Just use the search bar and type in 'Kingdom Hearts 3 Sora and Kairi' and a whole list will pop up.
Well, in many of these fanfictions, the kiss can be a way to show the deepening of their emotional bond. It can also be interesting to see how different writers handle the build - up to the kiss. Some might focus on their shared memories and adventures, while others might play up the tension of their unspoken feelings. Also, the aftermath of the kiss can be just as engaging, like how it affects their relationships with other characters in the Kingdom Hearts world.