In a more angsty fanfiction, Sam might kiss Dean on the neck during an argument. It could be a desperate attempt to stop Dean from leaving or to make him understand how much Sam cares. Sam may think that words are not enough and this physical gesture, although unexpected, is his way of reaching out to Dean. Dean, on the other hand, is completely taken aback and doesn't know how to react immediately.
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.
You can make it more interesting by exploring the emotions in great detail. Describe not just the physical act of the kiss, but how Sam's lips feel on Dean's neck, the warmth, the texture. Then go deep into their thoughts. Is Sam scared of Dean's reaction? Is Dean feeling a flutter of something he's never felt before? By really delving into these aspects, the fanfiction becomes much more engaging.
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.
One place to look for such fanfiction could be Archive of Our Own (AO3). It has a vast collection of Supernatural fanfictions, and by using the search function with relevant tags like 'Dean', 'Sam', and 'kiss', you might be able to find the fanfictions you're interested in.
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.
She could be a nephilim, half - angel and half - human. This would put her in great danger as both angels and demons would be after her. Sam and Dean would have to constantly protect her and figure out a way to keep her powers in check.
Another good one is 'Unexpected Affection'. It takes an interesting approach to the scenario, exploring how it would affect the characters' dynamic not only with each other but also with other characters in the Supernatural universe. It's a bit more action - packed compared to some others.
One possible plot could be that Harry discovers her relation to Sam and Dean early on. She then tries to balance her wizarding education at Hogwarts with the hunting life of her brothers. Maybe she uses her magic to fight off the same demons that Sam and Dean are hunting, but in a different, more magical way.
In this fanfiction, Max might be on a mission to find other transgenics who have gone missing. Sam and Dean get involved when they notice some strange disappearances in the area that seem to be related to Max's search. Sam uses his psychic abilities (if we consider some AU elements) to sense where the missing transgenics might be. Dean, on the other hand, helps Max break into the facilities where they are held. Along the way, they face various challenges like security guards, booby traps, and even some supernatural elements that are guarding the place.
In this fanfiction, Alec and Max could bring their unique abilities. Maybe Alec has some super - strength and combat skills from his genetic engineering, and Max has her own set of powers. When they meet Sam and Dean, who are expert hunters, they could exchange knowledge. Sam and Dean could teach them about the supernatural lore they know, while Alec and Max could introduce some new - age technology that could be useful in hunting. This interaction could lead to a series of adventures where they all grow as characters and form a strong bond.
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.