Yes, there might be some out there. You can check fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Kakashi and Tsunade kiss' on those platforms and you may find relevant stories.
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.
Yes, there are quite a few. You can start by looking on popular fanfic websites like FanFiction.net or Archive of Our Own. Just search for 'Naruto Kiss Kakashi' in their search bars and you'll find a variety of stories. Some might focus on an alternate universe where their relationship takes a more romantic turn, while others could be more of a one - off, what - if scenario.
Their relationship could become more awkward at first. Sakura might be shy around Kakashi, and Kakashi, who is usually so composed, could also be a bit flustered. But as time goes on, they might start to open up more to each other about their feelings.
One interesting 'Kakashi Kiss Naruto' fanfiction could be where Kakashi shows his deep affection for Naruto in a moment of extreme danger. He might kiss Naruto to transfer some of his chakra in a very unique and unexpected way, which is different from the normal chakra transfer methods in the Naruto universe.
Love against the odds is also a frequent theme. In the Naruto universe, Kakashi has his own responsibilities and a complex past. So, the fanfiction might explore how the relationship between him and the OC overcomes these obstacles. And of course, the theme of first love or new love experiences can be seen, as the kiss is a significant moment in their relationship's development.
A possible plot could be that in a mission gone wrong, Naruto and Kakashi get separated from the rest of the team. They end up in a strange place where they have to rely on each other more than ever. As they face various challenges together, their bond deepens and Naruto realizes his feelings for Kakashi, leading to a kiss.
One possible plot could be that they are in a dangerous situation together, like facing a powerful enemy. In the heat of the moment, they realize their feelings for each other and share a kiss. Another plot could be that Tsunade is injured and Kakashi, while taking care of her, they have a tender moment and kiss.
One great place to start looking for 'kakashi and oc kiss fanfiction' is Archive of Our Own (AO3). There are many talented writers on there who create such stories. Just search for 'kakashi and oc kiss' in the search bar, and you'll get a list of relevant fanfictions. Some might be more to your taste in terms of the overall plot, writing style, etc.
Yes, it can be a somewhat popular theme in the fanfiction community. Some fans like to explore unique and unexpected relationships between characters. It adds a new and different dynamic to the Naruto universe that we don't see in the original series. It gives writers a chance to be creative and show a different side of the characters' personalities through this unorthodox relationship.