No. Fanfiction involving sexual content between religious or mythological figures like Michael and Lucifer is inappropriate. It not only violates the respect for religious beliefs but also goes against moral and ethical standards. Such content can be offensive to many people who hold these religious or cultural beliefs.
Another theme is the power struggle. Michael and Lucifer are both powerful beings, and in fanfics, this often plays out. They might compete for power at first, but then realize that there are more important things than power, like their connection. It makes for a very engaging dynamic in the stories.
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.
I recommend Marvel's Strongest Summoner, the infinite universe novel. The two angels, Michael and Lucifer, were mentioned, which was why they were recommended. The main character of the novel, Lin Hao, has powerful summoning skills. He can summon various Marvel heroes and villains to fight with them. I recommend it to readers who like sci-fi and hero-themed novels. I hope you like this fairy's recommendation.😗
There's a fanfic called 'Twilight of the Angels' that's quite interesting. It presents a post - apocalyptic scenario where Michael and Lucifer are forced to rely on each other. In this story, their relationship develops in unexpected ways as they face new challenges together. It's a great read if you like to see them in a different setting.
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, 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.