One common theme is her struggle with her own identity. Given her complex backstory in the Fate universe, many fanfics explore how she comes to terms with being a heroic spirit. Another theme is her relationships, like her sisterly bond with other female characters if they happen to be in the same story. It's not about romantic or sexual relationships but more about mutual respect and support.
Percy's combat skills and his ability to think on his feet would make him a formidable servant. He might be intrigued by Medusa, especially if he learned about her past. He could see similarities between her situation and some of the beings he's encountered in his own world. He might try to free her from the cycle of being a servant in the Grail War, which would surely stir up a lot of drama and conflict with the other parties involved in the war.
There are many great Fate Stay Night Medusa fanfics out there that are not of the 'lemon' variety. You can start by looking on fanfiction.net. Search for 'Fate Stay Night Medusa' and then filter through the results. Some of the more popular ones often focus on her backstory, her relationships with other characters in a non - sexual way, like her loyalty to her master or her interactions with the other heroic spirits.
Well, Percy might be initially shocked by Medusa's appearance. But given his heroic nature, he could try to understand her situation. Maybe he'd see her as a victim of the cruel fate in the Fate universe, rather than just a monster.
I really like the fanfic 'Rin's Redemption'. It focuses on Rin's character development in a way that the original might not have fully explored. The plot is filled with twists and turns that keep you hooked from start to finish.
Fate Stay Night Visual Novel is a popular Japanese visual novel. It features a complex story with multiple routes and endings. The story involves themes of magic, heroism, and the battle for the Holy Grail. It has a diverse cast of characters, each with their own backstories and motives.
The Fate/Stay Night visual novel is a Japanese interactive fiction game that features a rich story with multiple routes and complex character development.
Overall, the Fate Stay Night visual novel is considered good. It has a complex and interesting plot, rich world-building, and offers multiple paths and endings that provide depth and replayability. The art and sound design also contribute to its appeal.