One major challenge would be Artemis's vow of chastity. Since she has sworn to be a maiden goddess, falling in love goes against her very essence. In the fanfiction, this could create a huge internal conflict for her, as well as external pressure from the other gods who uphold her vow.
Another challenge could be the reactions of their respective groups. Percy has his friends and fellow demigods, and they might not understand his love for a goddess like Artemis. Similarly, Artemis has her hunters, who follow her strict code. Her hunters might see Percy as a threat to their way of life and their relationship with Artemis, causing tension in the relationship.
One challenge could be the disapproval of other gods. Since Artemis is a goddess and Percy is a demigod, there might be a hierarchy issue. Some gods could think that Percy is not worthy of Artemis. Another challenge could be their different natures. Artemis is used to her independence as a virgin goddess, and Percy is more used to being part of a team. Adjusting to living together and sharing their lives could be difficult.
The child would likely face a lot of prejudice. In the Percy Jackson universe, the idea of Artemis having a child goes against her long - held status as a virgin goddess. So, many characters might look down on the child or be suspicious of it. Also, the child would have to deal with very different powers from its parents. Percy has powers related to the sea, and Artemis has powers related to the moon and the hunt. Combining and controlling these different powers could be a huge challenge for the child.
One challenge could be the loyalty to their previous relationships or crushes. Percy had a history with Annabeth, and Piper was involved with Jason. Their friends might not be fully accepting at first, which would create social pressure.
Tatsumi might also face opposition from his friends and allies. They would likely be very suspicious of Esdeath and not understand why Tatsumi is falling for her. His friends could try to convince him that she's not good for him, which would put a strain on his relationships with them as well as his new - found feelings for Esdeath.
One challenge could be keeping their identities secret. Since they are superheroes, they have to protect their civilian identities as well as their superhero ones. Another challenge might be balancing their superhero duties with their married life. They can't always be there for each other because they are out saving the world.
One challenge could be their different loyalties. Ivypool is loyal to her clan, while Hawkfrost has shown time and again that he is more self - serving. This would create constant conflict as they try to be together. Another challenge is the distrust from Ivypool's clanmates. If they knew she was involved with Hawkfrost, they would be suspicious of her motives.
Well, in the fanfic, it could be that Percy has always been intrigued by the mystery surrounding Artemis. He might have heard tales of her from other demigods or gods. When they finally meet, there's an instant connection. Their interactions are filled with banter and mutual respect at first, but as the story progresses, Percy realizes his feelings for her are deeper, evolving into love.
One challenge could be their different natures. Percy is more of a free - spirited, sometimes impulsive hero, while Artemis is a virgin goddess of the hunt, very much about purity and independence. Their different values might clash as they try to come together in a romantic relationship in fanfiction.
One big challenge could be competition among other researchers. In the fanfiction world, there could be rival marine biologists who want to be the first to discover something new. Percy might also face environmental threats. Things like pollution ruining the habitats he's studying or climate change affecting the behavior of the marine life he's researching. He'd have to find ways to work around these issues to continue his work.
He may face challenges in the magical realm. The magic in the Percy Jackson universe might not interact well with his cyborg parts. For example, if he tries to use his powers while his cybernetic parts are active, there could be some unforeseen consequences. Also, he may be an outcast in both the human world (because he's a demigod) and the demigod world (because he's now a cyborg), which could lead to a lot of emotional and practical difficulties.