A fanfiction about their marriage could also be a love story. Perhaps they discover a deep connection that goes beyond their roles as gods of different domains. They could start secretly meeting, falling in love gradually. When they decide to marry, they face the prejudice of the other gods who think it's an unnatural union. But they don't care and fight for their love, creating a new place where both sea and underworld elements coexist, a sort of in - between realm for them to live in happily.
Well, it could focus on the political implications. In Greek mythology, the gods often have power struggles. Their marriage could be a strategic move. Poseidon and Hades might join forces to gain more influence among the other gods. Maybe Zeus would be threatened by their union. This could lead to a series of events where they have to prove their loyalty to each other and their new combined rule while facing opposition from Zeus and his allies.
One possible plot could be Percy struggling with the duality of his parentage. He might face discrimination from both the children of Hades and Poseidon. For example, the children of Poseidon could see him as a threat because of his connection to Hades, and vice versa. He could then go on a journey to prove that his dual heritage doesn't define him, but rather gives him unique powers to protect the world of the gods and mortals.
In the development of their relationship, they would also have to deal with family matters. The other gods, like Zeus, might try to interfere. But Poseidon and Hades could stand united. They would have to communicate a lot, about their pasts, their fears, and their hopes for the future. Through these deep conversations, they would form an unbreakable bond. Their marriage would be more than just a union of two powerful gods, but a relationship based on mutual respect, love, and the shared goal of creating a new order in the mythological world.
One possible plot could be that in a modern - day world, Zeus, Poseidon and Hades are reincarnated as ordinary humans but still retain some of their godly traits. The 'lemon' aspect might be some sort of romantic or sensual undertones in their relationships as they navigate this new world and their feelings for each other.
One possible plot twist could be that the other gods oppose their marriage strongly. Since it's an unconventional union in Greek mythology, Zeus might try to stop it for fear of disrupting the order of the cosmos. Another twist could be that a powerful external force, like a primordial being, tries to use their marriage as a way to gain power over the underworld and the seas.
One plot idea could be that Hades and Poseidon have to team up to face a new, powerful threat from the underworld that is starting to seep into the seas. They have to combine their powers, Hades' control over the dead and the underworld, and Poseidon's mastery of the seas. Another could be a story about their childhood, how they supported each other during the early days in Olympus when they were often overshadowed by Zeus. Maybe they shared a secret adventure that no one else knew about.
One plot idea could be a story where Poseidon and Hades have to team up to save the underworld from a powerful and ancient threat that is endangering both the sea and the realm of the dead. They start off distrusting each other due to their different natures but gradually learn to respect and rely on one another.
As 'lemon' fanfiction is not something that should be promoted, we can look at normal Hades and Poseidon fanfiction themes. These may include their part in the creation and governance of the world, and how their personalities clash or complement each other in various mythological events.
Power dynamics is a common theme. Given that both Poseidon and Hades are powerful gods, how their powers interact in the context of a relationship can be explored. For example, one might write about how they use their powers to protect or impress each other.
Well, it could be about Will going on an adventure in the Underworld and meeting Hades by accident. Maybe he's there to rescue someone or he got lost. And then they have an interesting conversation where Hades reveals some secrets about the Underworld.
One common theme is their power struggle. Since they both hold significant power in the Greek pantheon, stories often explore how they jockey for influence. Another theme is their family relations. They are brothers, and many fanfictions delve into their complex brotherly bond. For example, they might have to reconcile after a fight that endangers the stability of the cosmos.