Maybe it's a situation where Naruto and Sasuke have an argument in the alley. But as the argument reaches its peak, instead of fighting, they end up kissing. This could be a turning point in their relationship, leading to them finally understanding each other better and putting aside their differences. For example, they might start to work together more effectively after this incident.
One idea could be that they are in the alley hiding from some common enemy. In the heat of the moment, with the tension high, they share a kiss as a sign of their deep bond that has developed over time. It could be a moment of realization for both of them about their feelings.
One plot idea could be that in an alternate universe, Sasuke and Sakura have been in a relationship for a while. Naruto, being their close friend, witnesses their first real kiss during a moment of celebration after a big victory in the village. This kiss could symbolize the stability and love they've found in each other, and Naruto's reaction could be a mix of happiness for his friends and a tinge of his own loneliness.
One idea could be that Naruto and Sasuke meet in a peaceful alternate universe where there are no ninja wars. They could start a small business together, like a ramen shop. Another plot could involve them meeting during a festival in their village and rediscovering their friendship through fun activities like trying different festival foods and playing games.
A really interesting plot could be that Sasuke, for some mysterious reason, is the only one who can understand baby Naruto's unique needs. Maybe Naruto has some sort of power that only Sasuke can detect as a baby. So Sasuke becomes Naruto's guardian and mentor right from the start. As Naruto grows, they form an unbreakable bond that is different from their relationship in the original series. This could lead to many new adventures and challenges for both of them, and also change the way the other characters in the Naruto world view their relationship.
A moment of desperation. For example, if one of them is about to die in the alley due to an injury or a curse. The other, in a rush of emotion, kisses them as a way to convey all the unsaid things, all the love and friendship that has been there all along.
One interesting plot idea could be that in a world where Sasuke is a wolf and Naruto is a fox, they are forced to team up against a common enemy that threatens their respective clans. They start off distrusting each other but as they face challenges together, they learn to rely on one another's unique abilities.
One plot idea could be Sasuke and Sai being forced to team up on a mission. Sai, with his unique artistic abilities and Sasuke with his powerful jutsu. They start off not getting along as Sasuke is still brooding and Sai doesn't quite understand his ways. But as the mission progresses, they learn to trust each other. For example, Sai could use his ink techniques to create diversions while Sasuke attacks the real enemies from the shadows. This would show their growth as characters and how they can work together despite their differences.
One plot idea could be that they discover their brotherhood early on and train together more closely. They might combine their unique abilities, like Naruto's Rasengan and Sasuke's Chidori, to create new and powerful jutsus. This could change the whole dynamic of the story, with them facing challenges as a united front instead of rivals.
One idea could be a story where Naruto, as a mediator, tries to bridge the gap between Sasuke, representing Indra, and someone who has the spirit of Ashura. Maybe they have to work together to stop a new, powerful threat that only their combined powers can defeat. For example, a dark force that is trying to break the cycle of reincarnation between Indra and Ashura.
One idea could be that Naruto and Sasuke find a mysterious baby in the forest. They then have to figure out where the baby came from and how to take care of it together. This could lead to some comical moments as they struggle with diaper changing and feeding.
One idea could be that the fused Naruto and Sasuke form has a new set of unique jutsus that combine their individual abilities, like a Rasengan with Sasuke's Chidori lightning. Another could be that their fused form has to face an enemy that neither of them could defeat alone, such as a powerful Otsutsuki clan member. Also, the fusion might struggle with the different personalities of Naruto and Sasuke, leading to some internal conflict and character development.