One popular plot twist is when Hermione has to choose between Fred and her previous relationship with Ron. It adds a lot of drama to the story. Another is when Fred discovers a long - lost family secret that affects their marriage.
One common plot twist could be that Fred actually isn't the father after all, and there's a big mystery about who the real father is. This can lead to a lot of drama and conflict.
One popular plot twist could be that they keep their relationship a secret from their former Hogwarts friends at first. Their different backgrounds and the history of enmity between Gryffindor and Slytherin make it a big deal. Another could be that there's a prophecy involved that ties their unborn child to some great destiny in the wizarding world. Maybe the child is predicted to bridge the gap between the pure - bloods and the Muggle - borns, which adds a whole new layer of drama to the story.
One popular plot twist could be that Snape is actually controlling Hermione to protect her from a greater danger that she's unaware of. Maybe there's a dark wizard targeting her and Snape's control is a way to keep her out of harm's way while he figures out how to defeat the threat.
One interesting plot twist could be that while in each other's bodies, they have to deal with the opposite gender's social expectations at Hogwarts. For example, Hermione in Fred's body might struggle with the more laid - back attitude towards studies in Gryffindor among the boys. Another could be that they accidentally use magic in a way that reveals their situation to a few select characters, like Ron, who then has to help them keep it a secret. And a third plot twist might be that they start to understand each other's personalities and insecurities better through this strange experience, which changes their relationship for the better in the long run.
Another common plot twist is Hermione having a hidden connection to one of the other schools participating in the tournament. Maybe she discovers that she has family ties to a student from Beauxbatons or Durmstrang. This connection then leads to her getting involved in political or magical intrigue between the schools that wasn't present in the original story. It can involve her using her intelligence to navigate through these complex relationships and keep Hogwarts safe.
Well, a really interesting plot twist might be that Hermione, being Rossi's daughter, has some sort of special power or ability that she inherits from Rossi's side of the family that is neither fully wizard nor fully Muggle. This could lead her on a journey of self - discovery. Also, there could be a plot twist where Rossi has an enemy from his past who now targets Hermione because of her relation to him.
A possible plot could revolve around the magical aspects of Hermione's pregnancy. Since they are in a magical world, there could be unique magical events during her pregnancy. For example, the baby could have some special magical powers even before birth, and they have to figure out how to handle it. Also, Fred might use his Weasley's Wizard Wheezes knowledge to create some special products for Hermione during her pregnancy, like a charmed pillow that gives her a peaceful sleep.
One popular plot twist is when an old enemy returns to try and break up their marriage. It adds drama and conflict to the story. Another is when they discover a rare Pokemon that has the power to change their relationship in some unexpected way.
A possible plot twist could be that it was all a ruse. Maybe they faked their marriage for some greater good, like to expose a dark wizard who was targeting married wizards. Another could be that one of them was under a spell and didn't really mean to get married secretly, and when the spell is broken, they have to figure out what to do.
The 'Triple Trouble' fanfic is quite popular. It's set during their time at Hogwarts and focuses on how they get into all sorts of hilarious and sometimes dangerous situations. It's popular because it really captures the essence of the characters and the Hogwarts environment.