To develop their relationship in different ways, they could be put in a situation where they have to protect each other's secrets. This would create a strong bond of trust. For instance, if Merlin has a secret about his true origin that could put him in danger, and Nimue has to keep it safe. Or vice - versa. Their relationship could also grow through shared grief. If they both lose someone important to them due to the actions of an evil force, they can find solace in each other. Moreover, they could develop their relationship by exploring different magical realms together. As they encounter new and strange magics, they rely on each other more and more, and their relationship deepens.
In some fanfictions, their relationship might develop because of a common interest outside of spying. Say they both discover a love for a certain type of art or literature. This gives them a different side of their relationship to explore, away from the world of espionage.
Their relationship can be developed through shared secrets. For example, if they discover something about the academy that they're not supposed to know and have to keep it between them. This would create a deeper bond. Another way is through mutual protection. When one is in danger, the other steps up to defend, like Natsume using his fire Alice to protect Mikan from an attacking student. Also, they could develop their relationship by working on a project together for the academy. This would force them to spend time together, understand each other's strengths and weaknesses, and grow closer.
In a Merlin Poisoned Chalice fanfiction, their relationship can be developed in multiple ways. For instance, during Arthur's illness due to the poison, Merlin could be constantly by his side, and they could have some heart - to - heart conversations that they never had before. Arthur might start to question Merlin's loyalty and Merlin could prove it in a very emotional way. Also, when Arthur recovers, he could be more protective of Merlin, knowing that Merlin risked everything to save him. This could lead to a more brotherly - like relationship where they look out for each other. And perhaps, they could start to share their dreams and fears more openly, which would strengthen their connection even more.
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.
The relationship can be developed through shared secrets. For instance, if Merlin discovers a hidden prophecy that only the Lady of the Lake can help him understand. This would create a bond of trust between them as they work together to figure out the meaning of the prophecy.
One plot idea could be Merlin and Nimue teaming up to save a magical forest that is being threatened by dark forces. They could use their combined magic to fend off the evil entities. Another idea is a time - travel plot where they are sent to the future and have to adapt to the new world while also finding a way back. And perhaps a plot where they are wrongly accused of a crime in Camelot and have to prove their innocence together.
The relationship can develop through a shared goal. For example, if there is a great evil threatening both their lands. They are forced to cooperate. At first, they might have different methods, but as they face challenges together, they begin to understand each other better. Maybe the Fisher King has a daughter and Merlin saves her life, which earns him the Fisher King's loyalty and friendship. Also, exchanges of stories about their pasts and their hopes for the future can deepen their bond.
They could start by having more heart - to - heart conversations. For example, Arthur could share his insecurities about being a king and Merlin could talk about his fears regarding his magic. This would deepen their bond.
The physical closeness of Merlin sitting on Arthur's lap can be the start of a deeper emotional connection. Arthur might become more aware of Merlin's vulnerability, which could lead to him being more open and caring towards Merlin in general. For example, he could start sharing his own insecurities with Merlin.
Their relationship could be more complex. Instead of the straightforward enmity of the past, they might be forced to cooperate due to new circumstances. So, it's no longer just about good vs. evil.