One idea could be Percy using his water powers in a unique way against Medusa. For example, he could create a water shield that reflects Medusa's petrifying gaze back at her in a fanfiction. Another could be a scenario where Medusa, instead of being an enemy, teams up with Percy to face a greater threat.
First, you need to really understand the characters. Know Percy's traits like his loyalty and quick - thinking, and Medusa's backstory and her powers. Then, create an interesting plot. It could start with a strange encounter between them. Also, don't forget to add details to the setting, like describing Medusa's lair vividly.
You can develop Medusa by exploring her backstory more. Maybe show how she was before she was cursed, her hopes and dreams. For example, she could have been a beautiful and kind - hearted maiden once. Also, give her some complex emotions like regret for the people she has turned to stone.
I'm not sure if there's a specific existing fanfiction exactly like this. However, it would be a very interesting concept. Naruto's ninja skills combined with the mythological elements of being the son of Medusa and in the world of Percy Jackson could lead to some really unique adventures. Maybe Naruto could use his shadow clone jutsu to outwit the monsters from Percy Jackson's world, while also having some sort of snake - related powers from his Medusa heritage.
Sure, there are Percy Jackson and Medusa love fanfictions. Writers in the fanfiction community like to explore unusual pairings. They might rewrite Medusa's character to make her more sympathetic or create a whole new backstory for their relationship. But it's not a common or mainstream concept within the overall Percy Jackson fandom.
It could be a demigod who has been corrupted by the power of Medusa's severed head. He uses the petrifying power for his own evil gains, like trying to turn all the other demigods into stone so he can rule the demigod world alone.
In a fanfic, perhaps Percy and his friends accidentally stumble upon Medusa's lair while on a quest. But instead of immediately attacking, Medusa offers them a deal. She says she will give them a valuable clue to complete their quest if they help her get revenge on one of the minor gods who wronged her in the past. Percy and his friends then have to decide whether to trust Medusa or not.
In Percy Jackson fanfiction, 'lemon' usually refers to content that contains sexual or adult - like themes. However, this kind of content is not really in line with the original spirit of the Percy Jackson series, which is more focused on adventure, friendship, and the growth of the characters. So, most of the time, 'lemon' content in Percy Jackson fanfiction is not very appropriate.
In a Percy Jackson and Hestia lemon fanfiction, it could be that Hestia uses her powers related to the hearth to create a lemon - like glow around Percy. This glow gives him an extra boost of energy during a battle. They form an unlikely bond, with Hestia seeing Percy as a symbol of hope for the future of the demigod world. And the lemon aspect could be metaphorical, like a fresh start or a new hope that Percy brings, much like the refreshing feeling of a lemon.
One possible fanfiction could be about Sally Jackson making lemonade for Percy and his friends during a hot summer day at Camp Half - Blood. It could show a warm mother - son moment between Sally and Percy, with the lemonade as a symbol of comfort and home in the midst of the chaos of the demigod world.