No. Harry Potter is a completely separate and original fictional universe created by J.K. Rowling, while Fate Stay Night is another distinct work. They have their own unique storylines, characters, and settings, and there is no such relation of Harry Potter being a fanfiction of Archer Fate Stay Night.
One characteristic is the exploration of romantic and passionate relationships between the characters. It often takes the pre - existing character dynamics from the original 'Fate Stay Night' and intensifies the emotional and physical aspects.
One great 'Fate Stay Night Merlin Fanfiction' is 'Merlin's True Role'. It delves into Merlin's backstory and how his magic could have influenced the events of the Holy Grail War in ways not shown in the original. It has a really interesting take on his relationship with the other servants as well.
A good Fate Stay Night fanfiction often has well - developed characters. Just like in the original, the characters in fanfics need to be complex and multi - dimensional. For example, if it's about Shirou, his internal struggle between his ideals and reality should be explored deeply. Also, an interesting plot is key. It could be a new take on the Holy Grail War, or a different relationship dynamic between the characters. And of course, staying true to the overall theme and lore of Fate Stay Night is important.
The settings are different. Harry Potter is set in a wizarding world with places like Hogwarts, Diagon Alley, and the Forbidden Forest. Fate Stay Night is set in a modern - day Japanese city with a hidden world of the Holy Grail War. Also, the characters are distinct. Harry Potter has characters like Harry, a young wizard, and Dumbledore, a wise old wizard. Fate Stay Night has characters like Shirou, a normal high - school student turned Master, and Saber, a powerful Servant.
The 'System Gamer' aspect changes the story by adding a new layer of progression. In the original, characters develop through their experiences and training in a more traditional way. But in the fanfiction, with the system gamer element, they can level up, gain new skills instantly, and have stats like in a game. For example, a character might be able to see their 'strength' or 'intelligence' stats and work on improving them.
One common theme is the clash of different power systems. Percy has his own set of powers and abilities, and when he enters the Fate Stay Night world, there's a contrast and sometimes a combination with the magic and Servant powers there. Another theme is adaptation. How Percy adapts to the new rules, the new culture, and the new challenges of the Fate Stay Night universe.
Power and its consequences is also a common theme. Since Sakura has unique powers in the Fate Stay Night lore, fanfictions often explore how she deals with the power she has. For example, how it affects her relationships and her moral compass. Redemption is another theme, especially when dealing with Sakura's past and any mistakes or hardships she has faced.
One common theme is redemption. Since Medea has a rather dark past in the original work, many fanfictions explore her path to redemption, trying to atone for her past misdeeds.