In a fanfiction where Sirius Black adopts Hermione Granger, a plot twist could be that the magical community doesn't accept this adoption easily. There could be a lot of opposition from different factions. Some might think that Sirius, with his past as a supposed criminal, isn't a suitable guardian. Meanwhile, Hermione could be facing problems at Hogwarts because of this new family situation. However, through their bond, Sirius and Hermione could overcome these difficulties and in the process, Hermione could learn some long - lost family magic from Sirius, which gives her an edge in dealing with the challenges that come their way.
One possible fanfiction could be about Sirius mentoring Hermione. Sirius has a wealth of knowledge about the wizarding world, especially the darker aspects. He could teach Hermione things that she wouldn't learn in the classroom. For example, he might share his experiences with the Dark Arts and how to defend against them in a more practical way than textbooks. Their relationship could start off rocky as Hermione is a rule - follower and Sirius is more of a rebel. But over time, they come to respect and learn from each other.
Well, perhaps there's a fanfiction where Sirius Black is wrongly accused again, but this time Hermione believes in his innocence from the start. She uses her intelligence and resources to prove his innocence while they are on the run from the Ministry. Along the way, they form a deep bond and discover new magical abilities within themselves that they use to clear Sirius' name and also make some changes to the wizarding world's justice system.
One possible plot twist could be that the marriage law forces them together initially, but they discover a deep, unexpected connection. For example, Sirius might initially be resistant as he sees Hermione as a young friend, but through shared experiences in the wizarding world, like fighting against dark forces together, they grow closer.
A fanfiction might depict Sirius and Hermione as co - teachers at Hogwarts in an alternate universe. Sirius could teach Defense Against the Dark Arts in his own unorthodox way, and Hermione could bring in her academic knowledge. Their teaching styles would be very different, but they would complement each other. The students would be both fascinated and a bit intimidated by this pair. They would have to deal with things like classroom pranks and students who are having trouble with the coursework, all while building a unique bond.
Well, perhaps in a fanfiction, Sirius Black could time - travel back to Hermione's school years. He'd be this mysterious figure who helps her with her studies in the Room of Requirement. Their relationship could develop as he shares his knowledge of the old wizarding ways, and they fall in love while trying to prevent some dark magic from resurfacing.
A plotline might involve Sirius and Harry living together and Sirius trying to give Harry a normal family life. He could cook for Harry, help him with his homework, and they could have a pet together. Maybe they get a Kneazle, and Harry learns to take care of it with Sirius' guidance. This would be a contrast to the cold and often neglectful treatment he received from the Dursleys. And as Harry grows, Sirius could introduce him to his old friends like Remus Lupin in a more family - like setting, strengthening Harry's support system.
One possible plot twist could be that Sirius Black, being a wanted man, has to constantly move with Harry to avoid capture. This would make Harry's childhood very different from the one at the Dursleys. He'd grow up learning about the wizarding world on the run, perhaps meeting some unique characters in hiding places.
One possible plot twist could be that Anko has a hidden power that Naruto uncovers during the adoption process. Maybe she has a connection to an ancient clan or a special jutsu that she's been suppressing. This discovery could change Naruto's view of her and also put them in danger as others might be after that power.
One common theme is the idea of defying the norm. Since their relationship is not part of the original story, it goes against what's expected. Another theme could be the exploration of time and its impact. For example, if Sirius somehow survives and meets Hermione at a different point in time. There's also often a theme of love that transcends boundaries, whether it's the age gap or their different social standings within the wizarding world.
One possible plot twist could be that Sirius Black has a hidden motive for kicking out the Order. Maybe he discovers a traitor within the Order and by kicking them all out, he forces the real traitor to expose themselves in order to rejoin. Another could be that Sirius is being influenced by a dark force that he's unaware of, which is making him act out of character. For example, it could be a spell that was cast on him by a Death Eater.