It could also cause some tension within their team. Other members might notice the change in their dynamic. For example, Sakura could sense that something is different between them and it might make her jealous or confused as well.
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.
In this kind of Yaoi fanfiction scenario, one possible thing that could happen next is a lot of emotional turmoil. Sasuke might have kidnapped Naruto for reasons related to his own inner demons or some misconstrued idea of protecting him. Naruto, being kidnapped, would initially be angry and confused. He would try to reason with Sasuke, leading to some intense dialogues that could explore their complex relationship. There could also be a moment where Naruto starts to understand Sasuke's motives a bit more, which might lead to a change in their dynamic, perhaps even towards a more affectionate connection as is often the case in Yaoi stories.
One possible scenario is that Naruto would be initially shocked. He has always seen Sakura as Sasuke's love interest. But he might accept her feelings gradually. Sakura, on the other hand, would have to deal with the guilt of leaving Sasuke. Naruto could help her through this and they might start a new life together, facing the challenges of the ninja world as a couple.
On the other hand, Naruto could also have some hidden feelings that he wasn't aware of before. So, instead of being angry or shocked, he might start to have a warm feeling inside and start to question his own feelings towards Sasuke.
They may leave to investigate a mystery that has long been ignored or covered up by Konoha. This could be related to the origin of certain powerful jutsu or the real history of some important clans. Their departure from Konoha is a way to break free from the village - imposed limitations on knowledge and seek the truth on their own.
One possibility is that they go on a journey of self - discovery. Away from the constraints of Konoha, Naruto and female Sasuke might explore new jutsu and powers. They could encounter new enemies and allies, and perhaps form a new ninja group that operates outside the traditional shinobi village system.
Maybe the enemy would see Naruto's injury as an opportunity to finish him off. But Naruto has a habit of surprising his foes. Even in his hurt state, he could pull off some unexpected jutsu. His friends could also use this situation to set up a trap for the enemy. For example, they could make it seem like Naruto is more injured than he actually is, luring the enemy into a false sense of security before attacking.
Well, if Sasuke turns into a baby in a fanfiction, one thing that could happen is that his friends would have to take care of him. Naruto, for example, might be really confused at first but then would become super protective. He'd probably try to feed Sasuke all kinds of strange foods that he likes, like ramen, not realizing that babies can't eat that yet. And Sakura would be all motherly, trying to keep Sasuke clean and making sure he's warm.
One possibility is that Naruto and the others would immediately start a search and rescue mission. They would follow Sasuke's tracks and try to figure out his motives. Sakura, on the other hand, might try to reason with Sasuke during the kidnapping. She could remind him of their past friendship and the bonds they once shared.
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.
Well, in such a fanfiction, Sasuke might be taken to Orochimaru's lair. There, Orochimaru could try to force Sasuke to accept his power - like the cursed seal. Sasuke, being strong - willed, would likely resist at first. But Orochimaru has his ways of persuasion. Maybe he'd show Sasuke some dark jutsu that could make Sasuke more powerful. And Sasuke, who's always eager to gain power to avenge his clan, might start to consider Orochimaru's offer despite the risks.