One possible reason could be a newfound understanding between them. Maybe they've both grown and realized that their past enmity was pointless. They might have had some shared experiences that made Harry see Draco in a different light, and thus he was willing to accept his hand as a sign of peace or new friendship.
They might start as cautious allies. They would be testing the waters, not fully trusting each other yet but knowing they need to work together. For example, they could be sharing information about certain spells or magical artifacts that are relevant to their new situation.
If Harry shook Draco's hand in fanfiction, it could potentially break down the barriers of prejudice and rivalry. It might lead to unexpected alliances and adventures as they learn to work together and overcome challenges that they wouldn't have faced alone.
Well, it might result in a friendship that neither of them expected. Harry, by taking Draco's hand, could be showing a sign of forgiveness or a willingness to bridge the gap. This could make Draco re - evaluate his own actions and beliefs. They might end up working together to solve some of the mysteries in the wizarding world that are bigger than their house rivalries. It could also cause a stir among their friends, with some being supportive and others being completely against this new - found connection.
One possible plot development is that they form an alliance against a common enemy. Maybe there's a new dark force emerging in the wizarding world, and their combined skills and knowledge are needed. Another is that they start to explore their feelings for each other, which could be more than just friendship. It could be the start of a romantic relationship, which would be a huge change from their traditional enmity.
One interesting plot development could be them teaming up to solve a mystery at Hogwarts that neither could solve alone. Maybe there's a hidden magical artifact that has been causing strange things to happen, and their combined knowledge of different parts of the school and different magic techniques helps them figure it out.
In this 'harry shakes draco's hand fanfiction', the significance of the handshake could be multi - faceted. It could be a moment of truce. In the context of the fanfic's world - building, perhaps there has been a series of events that led to this moment. For example, they might have realized that they have more in common than they thought. It could also be a way for the author to show that in this fictional universe, even the most unlikely characters can come to an understanding. This handshake could lead to a whole new dynamic between Harry and Draco, changing the course of the story and how other characters interact with them.
Well, it could be quite a shock to the other students. Some might be very skeptical at first. For example, Harry's Gryffindor friends like Ron might be really suspicious of Draco's intentions. They've had so many bad experiences with him in the past. But as time goes on, if they see that Draco is sincere in his new - found friendship with Harry, some might start to warm up to him. Hermione, on the other hand, would probably be more open - minded and try to encourage the positive aspects of this friendship. It could also make the Slytherins view Harry in a different light, perhaps with less hostility as he is now associated with one of their own in a friendly way.
In the original story, Harry and Draco were mostly rivals. In this fanfiction, the handshake shows a departure from that. It implies a relationship shift that doesn't happen in the books or movies. The fanfic might be exploring an alternative path where they can coexist peacefully.