In the 'Charlie rescues Harry from Ron romance fan fiction', it could be that Ron's romantic advances towards Harry are making Harry feel trapped. Charlie, who has a good understanding of both of them, might use his charm and knowledge of the wizarding world to create a distraction. He could introduce Harry to some new magical creatures or ancient spells, thus rescuing Harry from the awkwardness of Ron's romance.
It could be the society within the wizarding world that frowns upon same - sex relationships. Even though Ron's feelings are unrequited, the general attitude of the wizarding community might put pressure on Harry, and in a way, act as an antagonist. Charlie would then be rescuing Harry from this external pressure as well as Ron's unwanted romance.
Perhaps Severus, while rescuing Harry, stumbles upon a hidden connection between the Dursleys and the Death Eaters. This would add a whole new layer of danger and mystery. He might have to fight off some of his former allies to get Harry to safety. It could also lead to a change in Severus' perception of Harry as he realizes the boy has been in more danger all along than just from Voldemort.
In this fanfiction, it could be that Ron is under the control of a powerful wizard who wants to get to Hermione for some reason. Charlie discovers this plot and decides to protect Hermione. He sets up various traps and wards around the place where Hermione is staying. When Ron, being controlled, tries to attack Hermione, Charlie is there to intercept him, engaging in a magical duel if necessary to save Hermione.
Well, perhaps Draco realizes that a Ron - Harry romance in the fan fiction is just too out of character for the original story's dynamics. So he steps in, using his influence or some clever ploy to disrupt the fan - fictional plot. Maybe he spreads rumors that make the idea of such a romance seem absurd, thus saving Harry from this strange storyline.
Well, one possibility could be that Draco has a change of heart. Maybe he realizes the unfairness of Harry's situation at the Dursleys'. He could use his family's influence or some magic skills he has to get Harry out. For example, he might create a diversion to distract the Dursleys while he sneaks Harry away.
One common theme is redemption. Severus, who had a somewhat villainous image in parts of the original story, gets a chance to redeem himself through rescuing Harry and then developing a romantic relationship. Another theme is the breaking of barriers. They come from different backgrounds and have had a strained relationship in the original, so in these fan fictions, they break those barriers of enmity and class differences. Also, the theme of self - discovery often appears as they both learn more about themselves through this new relationship.
It has a certain following. Fans are drawn to the idea because it combines two very different characters. Severus is a brooding and complex figure, while Harry is the hero. When Severus rescues Harry, it can lead to a deep emotional connection that fans like to explore in a romantic context. It also allows for a re - imagining of the story's power dynamics and emotional arcs.
The plot twist could be related to Snape's true motives. He might be under an Unbreakable Vow to rescue Harry from the Dursleys. In the process, Harry realizes that Snape is not as bad as he seems. This could lead to a complete change in their relationship. Harry could start to trust Snape, and Snape, in turn, could teach Harry some unique magic that he has never learned before, which is crucial for the upcoming battle against Voldemort.
In this fanfiction, after Snape rescues Harry, the plot might take a turn where they have to keep their new - found relationship a secret. They could face opposition from the wizarding community due to their different standings and the unconventional nature of their relationship. This secrecy could add an element of mystery and drama to the story. They might also have to deal with their own internal struggles, like Snape's guilt over his past actions towards Harry and Harry's confusion about his new feelings for Snape.
One consequence could be that the fan - fiction's plot takes a completely different turn. Instead of a romantic storyline between Ron and Harry, it might shift towards a more adversarial relationship between Draco and Ron as Ron might suspect Draco's motives for interfering. Another consequence could be that Harry becomes more indebted to Draco, which changes their dynamic in the fan fiction.