It could be a plot device in a fanfiction that focuses on a more AU (alternate universe) setting. For example, in a world where ninjas have different social norms regarding relationships. Sasuke kissing Naruto's neck might be a common form of expressing deep friendship or even courtship. This would then lead to a story about how they navigate this relationship in a society that may or may not fully accept it, and how they overcome any obstacles in their way.
One possible plot could be that it's a moment of intense emotional connection. Maybe Sasuke has realized his deep feelings for Naruto after a long and arduous journey. The kiss on the neck could be a sign of his newfound vulnerability and love, leading to a series of events where they have to deal with the implications of this new aspect of their relationship within their world filled with ninja duties and challenges.
Perhaps it's a part of a plot where Sasuke is under some sort of spell or influenced by a strange power. He kisses Naruto's neck not fully in control of himself. This then sets off a chain of events where Naruto has to figure out what happened to Sasuke and how to reverse the situation. It could also be a way for the writer to explore the physical and emotional boundaries in their relationship in a rather unexpected way.
Perhaps in a fanfiction where there is a supernatural force at play. This force makes Sam act out of character and he kisses Dean on the neck. Dean is initially shocked but then realizes that Sam is not in control. They then have to figure out how to break the spell while also dealing with the new - found awkwardness and the underlying emotions that the kiss has brought to the surface.
In this fanfiction, the act of Sasuke kissing Naruto's neck might be a turning point. It could make Naruto more aware of Sasuke's emotions towards him. Maybe Naruto has always been a bit oblivious to Sasuke's deeper feelings. This moment forces him to confront and evaluate their relationship. For Sasuke, it could be a way of finally expressing himself after holding back for so long. This exchange then paves the way for them to communicate more openly about their relationship and move towards a closer, more trusting connection.
The plot could revolve around a misunderstanding. Ross sees Rachel kissing another guy's cheek in a friendly way, and he gets jealous. Rachel then kisses Ross's neck to show him that he's the only one she really has feelings for. This starts a new chapter in their on - again - off - again relationship.
Perhaps it's part of a battle scenario in the fanfiction. Sasuke could be under some sort of mind - control or dark influence. Biting Sakura's neck could be an act that shows his altered state. And Sakura's reaction to this could be a central part of the plot, whether she tries to fight back, understand what's wrong with him, or forgive him later.
One possibility is that it could lead to a major shift in their relationship. They might start to question their feelings towards each other more deeply. Maybe Naruto becomes more confused about his friendship with Sasuke as this unexpected kiss has added a new layer of complexity.
Well, in fanfiction, the author might want to explore a different romantic dynamic. Naruto and Sasuke have a very intense friendship, but by having Naruto kiss Hinata instead, it could be to show a more traditional romantic storyline. Maybe the author thinks that Hinata's gentle and loving nature is a better match for Naruto in a romantic sense compared to his complex relationship with Sasuke.
Well, it could be set in an alternate universe where the normal pairings in Naruto are different. Maybe Tenten has always had a secret crush on Naruto. One day, Naruto discovers her feelings and in a spur - of - the - moment decision, he kisses her. This kiss then sets off a chain of events where they have to navigate their new relationship while also dealing with the reactions of their friends and the ninja community around them. The story could explore how their relationship grows and how they face the challenges together. And there could be a lot of drama as other characters might not approve or might have their own interests in either Naruto or Tenten.
Perhaps in the fanfiction, it's a plot device to show a different side of Tsunade. She might be under the influence of a strange jutsu that makes her act out of character and kiss Naruto. This could then lead to a comical chain of events as Naruto tries to figure out what's wrong with Tsunade and the other characters react to this unexpected display of affection. The fanfiction could then focus on how Naruto has to deal with this new situation and keep it a secret from some of the more conservative characters in the village.
Well, one plot development could be that Harry is initially shocked but then realizes his true feelings for Draco. They might start a secret relationship, trying to hide it from their friends and the wizarding community due to the long - standing enmity between their families and houses. Another could be that Harry rejects Draco at first, leading to a period of tension and self - discovery for both of them as they figure out their emotions.
One common theme is the exploration of their unspoken feelings. In the original series, their relationship is complex, and fanfiction often dives into what those hidden emotions could lead to, like a kiss. Another theme is the idea of breaking boundaries, whether it be social or personal, as their relationship in the show has its own set of norms.