One storyline could be that Percy, while trying to defeat the Nemean Lion, discovers that it has a more sentient side. The lion, instead of attacking him immediately, seems intrigued by Percy. As they interact more, a bond forms that slowly turns into a romantic connection. Percy realizes that the lion is not just a mindless beast but has been misunderstood all this time.
In a different scenario, the Nemean Lion is a guardian of a magical place. Percy enters this place accidentally. At first, the lion is hostile, but Percy's courage and unique powers catch the lion's attention. Over time, they develop feelings for each other. Their romance is a secret as it goes against the norms of the demigod and magical creature world. They must then decide whether to keep their love hidden or fight for their relationship in the face of possible opposition.
Maybe the Nemean Lion is under a curse that makes it seem like a fearsome monster, but in reality, it was once a human. Percy's presence somehow starts to break the curse. As the curse breaks, the human form of the lion, who is a beautiful and strong - willed person, falls in love with Percy. They then have to face the challenges of the world together, with Percy protecting the now - vulnerable former - lion from those who still see it as a threat.
In some fanfictions, the Nemean Lion might be given more human - like intelligence. So, Percy has to outwit it rather than just relying on his physical strength. He could use his knowledge of Greek mythology to find the lion's weakness that others don't know about.
A possible way is if the Nemean Lion has a hidden identity or power that is related to Percy's own destiny. Their romance could be a part of fulfilling some prophecy. Maybe the lion's strength combined with Percy's skills are needed to defeat a greater evil, and during this journey, they fall in love. Also, the fanfiction could explore how their different natures - Percy being a demigod and the lion being a magical creature - complement each other in unexpected ways. For instance, Percy's human side could bring out the more tender and emotional side of the lion, while the lion's wild and powerful nature could make Percy more fearless in battle. This mutual influence could be the basis of their romantic relationship.
The relationship between Percy and the Nemean Lion can be explored in different ways in fanfiction. Some might show Percy having a moment of hesitation before fighting, realizing that the lion is also a magnificent creature. Others might make the lion a symbol of a greater evil that Percy has to overcome, not just a physical foe. This depth of exploration makes it captivating.
One possible storyline could be Percy having to face Medusa in a new way that doesn't involve just slaying her. Maybe he discovers that Medusa has a side to her that was misunderstood all along. For example, she was cursed not out of pure evil but due to the jealousy of the gods. Percy could then try to find a way to break her curse, leading to an unlikely alliance between them.
One storyline could be their child discovers a new, hidden power within themselves. Maybe they can communicate with a long - forgotten ancient Greek deity that has been dormant for centuries. Another could be the child getting lost in the Labyrinth while trying to prove themselves worthy to their parents. They meet all sorts of strange creatures and have to use their wits, just like Percy and Annabeth did.
Well, it's a Nemean Lion, so it might have impenetrable skin. In the fanfiction, this could make it an excellent protector for Harry. It could stand in front of him during battles and take on spells without getting hurt. It could also have enhanced speed and strength, allowing it to quickly attack enemies or carry Harry to safety if needed.
One popular storyline is Percy falling in love with Aphrodite. In these fanfictions, Aphrodite might see something special in Percy beyond his heroic deeds. Maybe she uses her powers of love to draw him closer, but Percy is conflicted because he knows she's a goddess and he's a demigod. It creates a lot of drama as he tries to figure out his feelings and deal with the power dynamics.
One possible storyline could be Fuli going on a solo adventure outside the Pride Lands. She discovers a new land with unique animals and has to use her speed and wits to survive and make new friends.
Survival is also a theme. Imagine she is in a world full of enemies and has to fight to survive. Fanfictions may depict her using her natural abilities like her impenetrable skin and great strength to outwit her foes. Also, themes of friendship or companionship might exist. For instance, she could team up with a human hero, and they learn from each other while on adventures together. This shows that even though she is a powerful and perhaps fearsome creature, she can also form bonds with others.
One popular storyline could be Percy and Annabeth going on new adventures together, exploring different parts of the mythological world that weren't covered in the books. For example, they could travel to a long - forgotten island full of ancient and powerful magic.