In Supernatural fanfiction, how could Lucifer and Michael's relationship as mates develop?

Often, their relationship is portrayed as very antagonistic. Lucifer resents Michael for always being the 'favored son' in their father's eyes, and Michael sees Lucifer as the rebellious and disobedient one. So in many fanfictions, they are at each other's throats, ready to fight at any moment.

Perhaps it begins with a common threat. A new and dangerous vampire group arrives, and Bella and the Denali sisters have to team up to fight against them. During the process, they get to know each other better. The Denali sisters, who are used to their own way of life, start to appreciate Bella's unique perspective and courage. This mutual admiration could lead to them becoming mates in the fanfiction world.

Some fanfictions play with the idea of an alternate universe where Lucifer and Michael have different roles. Maybe Lucifer is the one trying to maintain order and Michael is the rebel. There are also plotlines that explore their backstories in more depth, like their relationship with their father, God. This can add a whole new layer of complexity to their characters. Additionally, love interests can be introduced for them in fanfictions, which can change the dynamics of their relationships and the overall plot.

There's 'A Mate for the Archangels'. This fanfiction is quite detailed in its exploration of Michael and Lucifer as mates. It not only focuses on their relationship but also how it impacts the other characters in the Supernatural universe. It has a slow - burn aspect to it which makes the development of their relationship feel more natural and believable.

One interesting plotline could be their eternal struggle for power in a new, alternate universe created within the fanfiction. They might fight not just physically but also in the realm of manipulating other characters' loyalties.

In some fanfictions, it could be a powerful angel. Since Lucifer was an archangel, an equally powerful angelic being might be seen as his mate, perhaps one with a unique connection to him from before his fall.

To develop their relationship, start with their shared interests. For example, both are highly intelligent and interested in magic. Bill could introduce Hermione to some of the more esoteric branches of magic he has studied. This shared exploration of knowledge could bring them closer. Also, you could have them face challenges together, like a threat to the Weasley family. Working side by side to protect their loved ones would strengthen their bond.

Their relationship might start with a lot of hostility. Hermione, with her strong sense of justice, would be very wary of Lucius, who has a history of being on the wrong side. But as they interact more, Lucius could be intrigued by Hermione's intelligence and courage. He might start to change his ways to impress her, and Hermione could see the potential for good in him.

One idea could be a fanfiction where Lucifer and Michael are forced to team up against a new, greater threat. Maybe an ancient evil that even their father couldn't have foreseen. They start off hating each other but as they fight side by side, they begin to understand each other's perspectives a bit more.

Often, the characters that are the best - written are those that are given a new perspective in the fanfictions. For example, a fanfiction might show Lucifer as a victim of circumstance rather than just a pure villain. This new take on his character can make him very interesting. Similarly, Michael can be written in a way that shows his vulnerability, perhaps his doubts about his actions in the name of order. When these complex aspects are explored, they can become the best - written characters in the Supernatural Lucifer and Michael fanfiction.