At first, Harry could be dismissive of Draco's claims to be like Merlin. However, as Draco shows his deep understanding of magic and his ability to predict future events, Harry starts to listen. As time passes, Draco becomes Harry's most trusted advisor, just as Merlin was to Arthur. Their relationship grows through shared experiences, like fighting against Voldemort - like threats in the wizarding world. They learn from each other's strengths and weaknesses, and their bond becomes unbreakable.
Their relationship might start with distrust. Harry, like Arthur, may be wary of Draco, as Merlin, due to their past differences. But as they face common enemies, they begin to rely on each other. Draco's magic skills, similar to Merlin's, prove useful to Harry, and they gradually form a bond of friendship and mutual respect.
It could start with a slow realization of their feelings. Maybe they were friends for a long time and then suddenly, one day, they look at each other in a new light. After getting married, they become more protective of each other. Arthur might become more open to Merlin's magic, and Merlin would be more involved in Arthur's political decisions.
Friendship and rivalry are also prominent themes. In the original stories, Harry and Draco had a complex relationship. Now, in this new setup, that relationship gets a fresh take. They may have to work together more closely like Merlin and Arthur did, but their old grudges and differences still play a part, creating an interesting blend of friendship - building and ongoing rivalry.
In fanfiction, their relationship often develops in more nuanced ways. For example, some stories focus on the trust that slowly builds between them. Merlin's magic might be revealed earlier, leading to a period of adjustment for Arthur, which in turn deepens their connection.
There are several platforms where you can find such fanfiction. Archive of Our Own (AO3) is a great place to start. Just type in relevant tags like 'Harry as Merlin' and 'Draco as Arthur' in the search bar, and it should bring up a list of stories that match this concept.
In the fanfiction, their relationship may develop gradually over a series of events. At first, they might have a bit of a rocky start, with Arthur being a bit oblivious to Merlin's true worth. But as they face challenges like political intrigue in the court, battles against dark magic, and helping the common people, they start to understand each other on a much deeper level. Merlin's selfless acts of using his magic for Arthur and the kingdom, and Arthur's growing respect for Merlin's abilities and character, all contribute to a relationship that blossoms into love. And this love is what leads Arthur to consider proposing to Merlin.
Well, perhaps Draco, in the role of Merlin, has a special connection to the magical creatures that he uses to help Harry. Harry, as Arthur, is trying to unite the different factions of the wizarding world. Draco's knowledge of magic, similar to Merlin's, allows him to create magical artifacts or spells that assist Harry in his quest for unity. And there could be a love story involved too, like Guinevere and Arthur, but in the context of the wizarding world with some other character and Harry.
At first, they might be shocked and a bit confused about being twins. But as time goes on, they start to trust each other more. They could share their secrets and fears, like Harry might tell Draco about his nightmares of Voldemort, and Draco might open up about the pressure from his family.
At first, Harry and Draco would be at odds in prison. Harry, with his sense of justice, would be disgusted by Draco's past actions. Draco, on the other hand, would be resentful of Harry's 'holier - than - thou' attitude. But as they are forced to live in close quarters and face common threats, they might begin to communicate. They could share their fears and hopes. Slowly, this could lead to a grudging respect for each other. Maybe Draco would open up about his family's pressures, and Harry would understand his situation better. This could transform their relationship from enmity to a more amicable one.
During the time of Merlin's captivity, they could have long conversations that they never had before. Arthur might open up about his insecurities regarding magic and his kingdom, and Merlin could share his true feelings about serving Arthur. This would strengthen their bond in a new and unexpected way.
At first, it's likely to be full of hostility. Draco would probably enjoy lording over Harry as his slave, and Harry would resent it. But as the story progresses, they might start to understand each other better. For instance, Draco could see Harry's strength and determination even in his slave position.