One plotline could be that they are in a dangerous situation together, and in a moment of relief after being saved, they share a spontaneous kiss. Another could be in an alternate universe where they are part of a different social structure and their relationship develops romantically over time, leading to a kiss. Maybe they are training together and a moment of intense emotion during training results in a kiss.
One of the popular ones is 'A Moment of Bliss' which beautifully portrays the relationship between Naruto and Hinata leading up to their kiss. It really captures their emotions well.
I'm not sure specifically what that particular 'sakura x hinata lemon fanfic' is about as there could be many interpretations. It might be a fan - created story that involves the characters Sakura and Hinata in some sort of relationship or adventure. However, without reading it, it's hard to say exactly.
In many Naruto fanfictions, Sakura might be jealous of Hinata's relationship with Naruto. This could be because Sakura has her own unexpressed feelings for Naruto. For example, she may see Hinata's gentle and supportive nature towards Naruto and feel envious. It adds an interesting dynamic to the story as it can create tension between the characters.
One common theme is friendship - turned - love. They start as friends in the Naruto universe and then develop deeper feelings. Another theme could be mutual support. They both understand the challenges of being female ninjas, so they support each other in their growth.
One characteristic could be the exploration of their personalities in a new context. Hinata is often shy and Sakura is strong - willed. In such fanfictions, they might interact in ways that are different from the original story. The 'lemon' aspect might add a layer of passion to their relationship, perhaps through tender moments or expressions of deep love. And it may also show how they support each other in a more private and personal relationship.
One common plotline is the exploration of a complex love triangle. For example, Naruto might be initially in love with Sakura, but as he gets to know Hinata better, he starts to have conflicting feelings. Another plotline could be about their teamwork and how they support each other in battles and difficult situations in an alternate Naruto universe.
There's a fanfic called 'The Trio's Adventure'. In this one, they embark on a journey outside of their village. It delves into their individual strengths and how they complement each other. It's quite an engaging read with great descriptions of their interactions.