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.
You can try looking on fanfiction.net. It has a large collection of Naruto fanfics, and there's a good chance you'll find some stories that involve Sakura kissing Naruto there.
One popular 'Sakura Kiss Naruto' fanfic might be one where it explores an alternate universe where Sakura and Naruto share a kiss during a dangerous mission. In this fic, their relationship could take a new turn as they realize their feelings for each other in the heat of the moment.
In some fanfics, there might be alternate storylines where Sakura marries someone other than Naruto. However, kisses in these scenarios can vary greatly depending on the plot and the character she's paired with. For example, if she's paired with Sasuke in a fanfic where they end up together instead of her and Naruto, their relationship dynamic would be different and kisses might be more intense or more of a reconciliatory gesture given their complex history in the original series.
Well, it's very likely. Given the popularity of these characters in certain fandoms, fanfic authors may have delved into creating stories involving their interactions, including a kiss. Some smaller, niche fanfic communities might also have such works. It might be a good idea to also check any forums or groups dedicated to the source material of these characters, as members there might be able to point you towards relevant fanfics.
Maybe she kisses one of her rivals in a competition. This could be a way to throw the rival off - guard or perhaps it's a moment of sudden understanding between them that leads to the kiss. For instance, if they are in a magical competition and Sakura realizes that the rival has a side to them that she never noticed before, and in a moment of impulse, she kisses them.
After the accidental kiss, Sakura might be so shocked that she tells all their friends about it. This causes a huge stir in the village. Some people might start to tease Naruto and Sakura mercilessly. Naruto, being the goofball he is, tries to make light of the situation by joking about it. But deep down, he's really worried about what Sakura thinks. Sakura, on the other hand, is trying to figure out if she should forgive Naruto or not. As time passes, they find themselves in a series of comical and yet heart - warming situations that slowly bring them closer together.
Sasuke would likely be very surprised and perhaps a bit angry. He has his own complex relationship with Sakura, and seeing Naruto kiss her, even accidentally, would stir up his emotions. He might give Naruto a cold stare or a warning. Kakashi, on the other hand, would probably just raise an eyebrow and make a dry comment about how troublesome the situation is. He might also use this as an opportunity to teach them about self - control and the importance of respecting personal boundaries.