It could be that Fred was involved in some sort of prank that backfired and affected Hermione negatively. For example, if he was testing a new product from Weasley's Wizard Wheezes and it made Hermione look foolish in front of others. An irate Hermione would be a force to be reckoned with. Fred, realizing the magnitude of her anger, quickly decides to run. He might be thinking of ways to make it up to her as he runs, like coming up with a grand apology or a way to reverse the damage he's done.
Clearly, Fred and Hermione are the main characters here. Fred is at the center of the action as he is the one on the run. However, Hermione's anger is what drives the plot forward. Without her being irate, there would be no reason for Fred to run. So both characters play crucial roles in this fanfiction concept.
Perhaps the child is on a quest to bring back a lost magic that was present in the past but will be crucial for the future. Fred and Hermione are initially skeptical but as they see the child's abilities and the evidence of the disappearing magic, they start to believe. Together, they embark on a journey to find ancient spells and artifacts that can restore the magic, all while dealing with the challenges of time travel and the secrets the child holds.
Well, it could be a story where there's a big misunderstanding. Maybe Hermione thought Fred was about to play a prank on her that would cause harm to someone, and in her haste to stop him, she accidentally kicks him in the balls. Then it might lead to a whole series of events like Hermione feeling extremely guilty and trying to make it up to Fred while Fred is initially angry but then realizes it was a mistake.
Fred could use his knowledge of the Weasley family's magic tricks and inventions. He might have some secret gadget or spell that can break through the barriers or spells that are being used to torture Hermione.
The fanfiction could be about how their relationship evolved to having a baby. Maybe it started as an unexpected friendship that grew into love over time. They would have to deal with the differences in their personalities. Fred being more carefree and Hermione being more studious. But their love for each other and the new baby would bring them closer together, and they'd create a unique family environment in the wizarding world.
One possible plot is that Fred and Hermione accidentally meet at a wizarding club. They start to have a connection there, but then realize that the marriage law in the wizarding world has some restrictions that could affect their potential relationship. They then decide to find a way around these restrictions, which could involve seeking help from other magical beings or researching ancient magic laws.
One possible plot could be that Hermione and Fred start off as friends who gradually develop deeper feelings. Maybe they work together on a project in the wizarding world that brings them closer. Then, an unexpected moment of passion leads to Hermione getting pregnant. The story could then focus on how they deal with the news, including telling their families and friends in the wizarding community, and how they plan for their future together.
One common element is the use of magic in creative ways to evade Umbridge. For example, Fred might use his Weasley - brand magic items, and Hermione would rely on her extensive spell knowledge.
Well, in some versions, Fred might use his quick-witted magic skills. He could cast a distraction spell to draw Bellatrix's attention away from Hermione. Maybe a spell that creates multiple illusions of himself, confusing Bellatrix long enough for him to grab Hermione and disapparate them to safety.
Well, one plot development could be that Hermione is initially shocked but then realizes she has feelings for Fred too. They then have to deal with the reactions of their friends, like Ron being a bit miffed at first. Another could be that Hermione rejects Fred's proposal at first, but as the story progresses, she sees how much he truly loves her and changes her mind.