One popular plotline is the 'what - if' scenario. For example, what if Naruto had realized his feelings for Sakura earlier? In this kind of fanfiction, Naruto might confess his love and then they share a kiss. Another is the 'danger - brings - them - closer' plot. Maybe they are in a life - threatening situation, and thinking they might not survive, they finally admit their feelings and kiss.
There are several popular plotlines. One is the 'love - at - first - sight' type in a different setting. For instance, if they meet in a completely new place outside of Konoha, they might fall in love immediately and kiss. Another plotline involves a love triangle. Maybe Sasuke is still in the mix, but Naruto manages to win Sakura's heart in a more dramatic way, and the kiss is a culmination of that. And then there is the 'mature - realization' plot, where as they grow older and more experienced, they finally see each other in a new light and share a passionate kiss.
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.
One possible plotline could be that Sakura is injured during a difficult battle. Tsunade, as the experienced healer and mentor, tends to her. In the process, they share a moment of intense emotion and end up kissing as a sign of their deep bond. Another could be that they are celebrating a great victory for the village and in the euphoria of the moment, they kiss. Maybe it starts as a friendly peck but then turns into something more meaningful.
One plotline could be that they are in a dangerous situation together, and in a moment of relief after being saved, they share a spontaneous kiss. Another could be in an alternate universe where they are part of a different social structure and their relationship develops romantically over time, leading to a kiss. Maybe they are training together and a moment of intense emotion during training results in a kiss.
One possible plotline could be a situation where Naruto is split into two versions of himself, maybe by some sort of jutsu gone wrong. And as they get to know each other better, they end up kissing as a way to reunite or merge back into one. Another could be in a dream sequence where Naruto is exploring his self - worth and in this dream, he kisses his own reflection which then turns into another version of himself.
One possible plotline could be that Naruto finally returns after a long and dangerous mission. Sakura, who has been worried sick, is so overjoyed to see him alive that she impulsively kisses him. Another could be in an alternate universe where Naruto and Sakura are forced to pretend to be a couple for a mission, and during the course of it, real feelings develop and they end up kissing.
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.
A popular plot in such fanfictions could be a 'what - if' scenario. What if Naruto had a different upbringing? How would that affect his relationships with Sakura and Hinata? Some fanfictions explore this by making Naruto be raised in a different village for a while. Another plotline could be that Sakura discovers a new medical ninjutsu that can enhance the abilities of Naruto and Hinata, and they embark on a journey to perfect this new technique. And then there are those fanfictions where Hinata has a secret power that she reveals during a critical moment when she, Naruto, and Sakura are in danger, changing the course of their adventure.
One popular plotline could be that they have a secret relationship. Maybe they're afraid to tell their friends and family at first because they're not sure how it will be received. So they keep their kisses and their relationship a secret, which adds a lot of tension and mystery.
A common plotline is that they are in a dangerous situation together, like getting trapped somewhere. In that moment of fear and closeness, their feelings for each other intensify and they kiss. There could also be a plot where they are reminiscing about old times and suddenly a spark of romantic feeling emerges and they kiss. Or perhaps a new character comes into the picture and makes Freddie jealous, which then prompts him to finally confess his feelings to Carly and they kiss.
One popular plotline is when Misty and Ash are in a dangerous situation, like facing a powerful Pokémon. In the heat of the moment, they share a kiss out of fear and relief when they survive. Another is a slow - burn type where they gradually realize their feelings for each other during their travels. For example, as they help each other train Pokémon, they start to see each other in a new light and eventually kiss. And sometimes there's a plotline where they get separated for a long time and when they reunite, the emotions are so strong that they kiss.