One plot development might be Severus uncovering secrets about their families as he raises them. With Harry, he could discover more about James Potter's past that even Harry didn't know. For Draco, he might find out things about the Malfoy family's true intentions in the wizarding war. This could lead to a lot of emotional turmoil for the boys as they come to terms with new information. Also, Severus may have to protect them from those who still hold grudges from the war. The boys could also start to show new magical abilities or talents under Severus' tutelage that no one expected, which could draw both positive and negative attention in the wizarding community.
In some of these fanfictions, an interesting plot development could be Severus having to deal with the boys' different personalities. Harry, being brave and impulsive, while Draco is more reserved and proud. Severus has to find a way to balance their needs. For example, when it comes to their magical education, he might have to teach them in different ways. He could also have to handle the outside world's reaction to him adopting both a former 'enemy' (Harry) and a pure - blood Slytherin (Draco). Another aspect could be how the boys form a bond with each other through Severus' influence. They might start to see past their initial differences and become like brothers, which changes the whole dynamic of the wizarding world they live in.
One interesting plot development could be Severus having to adjust his teaching style at Hogwarts. Since he has adopted Harry, he can't be as harsh as he used to be towards him in class. This would create a new dynamic between them at school. Also, Severus might have to deal with the other teachers' reactions to this new situation.
One idea could be a story where Harry, Draco, and Severus are forced to work together on a dangerous mission to save Hogwarts from a new dark threat. They start off distrusting each other but gradually learn to respect and rely on one another.
Well, one interesting plot could be Harry seeing Severus in a new light. He realizes that Severus was actually a complex and misunderstood character. So, he decides to adopt him to give him a new start in life. Another plot might involve Severus initially being resistant to the idea of being adopted by Harry, but over time, he warms up to the concept as he sees Harry's genuine kindness.
One interesting plot could be Severus having to deal with Harry's fame at Hogwarts while trying to keep their new family relationship a secret. It adds a layer of mystery and tension.
Well, in some 'Draco Adopts Harry' fanfictions, a great plotline is how Draco overcomes his past enmity towards Harry. He starts to see Harry as a person in need rather than an enemy. There could be a plot where they work together to uncover secrets about Harry's past that Dumbledore might have hidden. And then, Draco has to protect Harry from those who don't want the truth to come out.
In this scenario, Severus' character experiences a significant transformation. He has to shed his cold exterior to a large extent. He becomes a father figure, which means he has to be there for the boys emotionally. He starts to show emotions more openly, whether it's pride when they do well in their studies or worry when they are in danger. His sense of loyalty also shifts. Before, it was mainly towards certain people or causes, but now his loyalty is first and foremost to Harry and Draco. This new - found loyalty makes him a more rounded and likable character in the fanfiction, as he is no longer just the brooding potions master but a loving and dedicated father.
Severus could become more confident. With Harry's support, he may not be as shy or withdrawn as in the original story. He might be more open to making friends outside of Slytherin.
In this fanfiction, Severus might adopt Harry to protect him from the dark forces that are still lurking around. He would use his knowledge of the dark arts and potions to keep Harry safe. He could also introduce Harry to a different side of the wizarding world, one that is more about academic study and self - discovery. For example, he may encourage Harry to study advanced potions at a very young age, which would give Harry an edge in his future magical education.
One possible plot could be that Severus discovers the extent of Harry's abuse at the Dursleys. He decides to take Harry in out of a sense of duty or perhaps a hidden soft spot for the boy. He then has to teach Harry about magic in a more personal and nurturing way, different from Hogwarts. They might also face opposition from the wizarding community who question Severus' motives.
In Draco rides Harry fanfiction, a great plot could be a situation where they both get lost in an unknown and dangerous part of the magical realm. They have to put aside their differences to survive. Draco's Slytherin cunning and Harry's Gryffindor courage could complement each other. Also, a plot where they are both under a spell that makes them see the world from the other's perspective could lead to some really interesting character development and relationship changes.