Perhaps there's a prophecy involved that foretells either Fred or Hermione's death, and Hermione, in her cleverness, figures out a way to twist it so that she takes Fred's place. The plot might then revolve around the lead - up to this moment, with their relationship growing and changing. We could see flashbacks of their time together at Hogwarts, how they became friends or more than friends. And then, when the moment of sacrifice comes, it's a very emotional and heart - wrenching scene.
Well, it would be a huge shift. The Golden Trio would be broken. Harry and Ron would be devastated. Hermione's intelligence and problem - solving skills are crucial for their fight against Voldemort. Her death might lead to a more desperate and chaotic situation for the remaining characters. They might lose some of their strategic edge and it could also cause a lot of emotional turmoil for the entire wizarding community who saw Hermione as a symbol of hope for Muggle - borns.
Harry would be crushed. He'd feel like he lost a sister. Ron would be in total despair, probably blaming himself. Ginny would be heartbroken too as Hermione was like a sister to her. The Weasley family, who had accepted Hermione as one of their own, would be in mourning. They'd all wonder how they could have prevented it and would be angry at the unfairness of it all.
There could be major power shifts. For example, the main characters might start to rule Hogwarts in an 'Overlord' - like way instead of following the traditional school hierarchy. Maybe Harry Potter himself could become more of a tyrant - like figure, using his powers not just for good but also for self - gain.
I'm not sure if there are many fanfictions specifically with that plot. But you could try searching on big fanfiction platforms like Archive of Our Own. They have a vast collection, and you might be able to find something that comes close to this concept.
Perhaps the plot could involve a love triangle. There could be another character, like Viktor Krum, who still has feelings for Hermione and is jealous of her relationship with Fleur. This would add drama and tension to the story. Also, Fleur's family might not approve of Hermione, leading to more conflict.
The plot could involve Hermione traveling to a future where the wizarding and muggle worlds have merged. She would then have to adapt to this new reality. She might see muggles using magic in some form, or wizards having to abide by muggle laws. This would be a huge change from what she's used to. Also, she could be on a mission to fix something in the future. Maybe there's a dark magic that's threatening to destroy both worlds, and she has the knowledge from her time to stop it.
It could also be that they run away for a more personal reason. Maybe Fred has feelings for Hermione that go against the social norms in the wizarding community. They run away to be together and explore their relationship away from the prying eyes and judgmental attitudes of their friends and family.
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.
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.
In their daily life, Naruto and Akeno would likely have a very active and eventful existence. Naruto would probably still train every day, and Akeno might join him sometimes. They would also share household chores. Naruto, who is used to taking care of himself, would learn new cooking skills from Akeno, who is more refined in such matters. Their home would be a place where friends from both their worlds would visit often. For instance, Naruto's old friends from Konoha like Shikamaru and Choji might drop by for a meal, and Akeno's comrades would also come to share stories and news.