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.
Well, in some fanfiction, there could be a plot where Naruto discovers a hidden power within himself that is manifested as a physical clone of himself. As he tries to understand this new aspect of his being, he develops an intense emotional connection with it. This could lead to a kiss as a way of expressing that deep connection. Another plot could be that Naruto is in a time - loop where he meets different versions of himself at different points in his life, and at some point, he kisses one of those versions as a way to break the loop or gain some sort of enlightenment about his life's journey.
One possible plotline could be that there is some sort of magical or dimensional rift that brings Naruto and Annabeth together. They initially misunderstand each other but as they start to work together to find a way back to their respective worlds, they develop feelings and end up kissing. Another could be that they are both summoned by a powerful being who forces them to compete in a series of challenges, during which they get to know each other better and share a kiss. Maybe there's a situation where Naruto's ninja skills and Annabeth's strategic thinking are needed to save a combined world, and their relationship blossoms from there.
One possible plotline could be that Naruto and Ahsoka are somehow transported to a parallel dimension where they have to team up to face a common enemy. During their adventures, they develop feelings for each other and eventually share a kiss. Another could be that Ahsoka visits the Naruto universe and Naruto is assigned to be her guide. They bond over their shared experiences of being strong - willed fighters and that leads to a romantic moment.
One possible plotline could be that Naruto and Ino are on a mission together. They face many challenges and during a particularly tough moment, Ino gets injured. Naruto is worried sick and when she recovers, he impulsively kisses her out of relief and new - found feelings. Another plotline could be that Ino has always had a secret crush on Naruto, but he was oblivious. As they grow older and Naruto starts to notice Ino in a new light, they share a kiss at a village festival.
A plotline could revolve around a love potion or some sort of magical spell. For instance, someone casts a spell on Naruto that makes him fall in love with Naruko, and the kiss is a result of that. But then, as the story progresses, they actually start to develop real feelings for each other. It could be a story of how they deal with these new - found emotions and the consequences of the initial spell.
One possible plotline could be that Ryuuzetsu is on a mission and Naruto accidentally stumbles upon her. They initially have a misunderstanding but as they get to know each other better, feelings develop and lead to a kiss. Another could be that Ryuuzetsu is somehow related to a new threat in the Naruto world and Naruto has to work with her. During their time together, they find a connection and share a kiss. Maybe Ryuuzetsu has some unique power that Naruto needs to understand, and in the process of that discovery, they grow closer and kiss.
One possible plotline could be that Fuuka is a new character in the Naruto universe. She meets Naruto during one of his missions, and they develop feelings for each other over time. Eventually, they share a kiss. Another could be that Fuuka has some special power or knowledge, and Naruto needs her help. As they work together, the relationship deepens and leads to a kiss.
One possible plotline could be that Ino and Naruto are on a mission together. They get separated from the rest of the team and have to rely on each other. In the process, they grow closer and share a kiss as a sign of their new - found connection.
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.
One possible plotline could be that Naruto is constantly rejected by the village he is trying to protect. This betrayal and lack of acceptance could gradually turn him dark. For example, if the villagers start to blame him for every bad thing that happens, even when it's not his fault. Another plotline might involve Naruto losing someone very close to him, like Sasuke, in a way that he blames the shinobi world for. This could lead to him deciding to take revenge on the world and turn to darker methods of achieving his goals. Maybe he starts to use forbidden jutsu without hesitation, seeing it as a means to an end.
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.