Merlin could protect Arthur from any threats that might prevent him from having a son. There could be dark forces or curses at play. By using his magic to ward off these negative influences, he could ensure that Arthur is in the best possible state, both physically and mentally, to father a son.
Merlin could use his magic. He might search for a magical solution, like a potion or a spell that could enhance Arthur's chances of having a son. Maybe he could find a rare herb with special properties that would help with fertility.
One reason could be for the continuation of his dynasty. In the context of Camelot, having a son would mean there is an heir to the throne. It would ensure the stability and future of his kingdom. Without a son, there could be disputes and power struggles over who will succeed him.
In the story, Merlin was a powerful wizard who played a crucial role in Arthur's life. He guided Arthur from his early days, often using his magical powers to protect him and ensure he could fulfill his destiny as king. For example, he arranged for Arthur to pull the sword from the stone, which was a key moment in Arthur becoming king. Merlin also provided wisdom and counsel to Arthur throughout his reign, helping him make important decisions.
In some fanfics, Merlin might have tricked Arthur or convinced him it was for the kingdom's safety.
Merlin was a powerful wizard. He was Arthur's mentor and advisor.
In the King Arthur Merlin story, King Arthur is the leader. He is responsible for ruling Camelot and maintaining order. Merlin guides him, but Arthur makes the important decisions. He is a symbol of justice and chivalry. He gathers the Knights of the Round Table to fight for good. His rule is supposed to be a time of peace and prosperity in Camelot, and he is the one who the people look up to.
Merlin has a great influence on Arthur. He uses his magic and knowledge. He educates Arthur about leadership and justice. He also protects Arthur from his enemies with his magical powers. For instance, he can foresee danger and warn Arthur in time. He is like a teacher and protector to Arthur throughout the story.
Merlin also influenced Arthur's relationships. He introduced Arthur to important people, including some of his most loyal knights. He was like a mentor who shaped Arthur's character and leadership skills. Without Merlin's influence, Arthur might not have been the great king that he is known as in the stories.
Merlin would likely be seen as a bit of an enigma at Hogwarts. His magic is different from the norm, so he might be a bit of an outsider at first. But his kind heart and loyalty would soon win over his classmates. Arthur would be the brave and headstrong character, perhaps a bit like a Gryffindor version of his usual self. He'd be eager to learn about combat magic and would probably be a natural leader in group projects or Quidditch teams.
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.
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.