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.
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.