Yes, there might be in some fanfictions. Fanfiction writers often explore different relationships and scenarios that didn't occur in the original Naruto series. However, not all fanfictions will have Naruto and Sakura kissing. It depends on the plot and the direction the writer wants to take.
It could also be a symbol of Sakura finally seeing Naruto in a different light. Maybe she has been blind to her true feelings for him for a long time, and the kiss is the moment she fully realizes her love. It might change the dynamics between them and how they interact with their friends and the rest of the village.
One possible scenario could be during a life - threatening battle. As Naruto and Sakura face a powerful enemy, Naruto gets seriously injured while protecting Sakura. In that moment of intense emotion, Sakura, fearing she might lose him, leans in and they share their first kiss. It would be a kiss full of pent - up feelings, a mix of fear, love, and relief.
Yes, there are quite a few. Some fanfic writers have explored the relationship between Naruto and Sakura in creative ways that might include a kiss scene. You can find them on various fanfic platforms like FanFiction.net or Archive of Our Own. However, the quality can vary a great deal from one to another.
There might be such fanfictions out there. Fanfiction is a vast realm where writers explore different relationships and scenarios. However, this goes against the canon relationship dynamics in the original 'Naruto' series. Kakashi is more of a mentor figure, and Sakura has her own complex relationships with Sasuke and Naruto.
There are also some more creative fanfictions where Naruto might have his first kiss with a completely new character created by the writer. This allows for a whole new set of storylines and character dynamics that deviate from the original Naruto universe.
One possible fanfic could be that Sakura has resentment towards Naruto because she feels he doesn't understand her true feelings for Sasuke. But then, during a dangerous mission, Naruto saves her life in a heroic way. This act makes Sakura realize how much Naruto truly cares for her. In a moment of emotional turmoil, she impulsively kisses him, which then leads to a series of events where they have to confront their feelings for each other and also deal with the implications within their team.
Well, if Naruto and Sakura kiss in fanfiction, the reactions would be diverse. Fans who have been rooting for them, known as shippers, would likely be overjoyed. They would see it as a validation of their long - hoped - for relationship. However, fans of other pairings, like Naruto and Hinata or Sakura and Sasuke, might not take it so well. They might feel that it goes against the 'canon' in a way. Also, some more purist fans might think that it's too out of character for the original Naruto and Sakura. There are so many different perspectives within the Naruto fan community.
The popularity might come from the fact that in the original Naruto series, the relationship between Naruto and Sakura was left somewhat open - ended. Fans love to fill in the gaps and create their own scenarios where they get closer, like sharing a kiss.