The lack of complete exploration of their relationship in the original source material is a big factor. Fans are left with a lot of room for imagination. So, they take it upon themselves to write fan - fictions that could be anything from comical adventures together to deep, emotional and angsty stories about their unrequited love or their shared secrets in the dark world of Black Butler.
You can start by looking on fan - fiction websites like Archive of Our Own (AO3). It has a large collection of fan - fictions, and you can simply search for 'Grell Sutcliff and Undertaker' in the search bar. Another option is FanFiction.net, which also has a good number of works related to various fandoms, including Black Butler where these characters are from.
One common theme is his relationship with other characters, especially Sebastian. Their interactions, whether it's rivalry or an unexpected friendship, are often explored. Another theme is his own self - discovery. Grell is a complex character, and fan fictions often focus on him coming to terms with who he is, his desires and his place in the world.
The potential for different story settings. It could be set in the world of Black Butler, or fanfiction authors might create alternate universes. For example, they could be in a modern-day setting where they have different occupations but still have that same underlying attraction. This allows for a lot of creativity and exploration of different scenarios.
Fanfiction.net is also a place to search. However, the quality and content can vary a lot. But if you dig through, you might come across some interesting stories about this pairing. Keep in mind to read the summaries and tags carefully to make sure it's what you're looking for.
There are quite a few on platforms like Archive of Our Own. 'Grell in the Modern World' is an interesting piece. It imagines Grell transported to the modern era, dealing with modern technology and different social norms. It's really fun to see how his flamboyant personality interacts with the contemporary setting. Also, some fan fictions focus on his relationships, like 'Grell and Sebastian: An Unlikely Bond' which delves into the complex dynamic between them.
No. 'Harry Potter' is a completely original work with its own unique world, characters, and storylines created by J.K. Rowling. It has no relation to Grell Sutcliff fanfiction.
One great 'Grell Sutcliff x Reader' fanfiction is 'A Crimson Bond'. It beautifully captures Grell's flamboyant personality while creating a sweet and somewhat comical relationship with the reader. The author does an excellent job of writing in the Black Butler universe's style.
There are some really interesting fanfictions out there. One great one might be where they go on an adventure through the afterlife together. It has a lot of character development for both of them and shows a different side to their relationship that we don't often see in the original work.
One great fanfic could be 'The Unlikely Bond'. It delves into the complex relationship between Undertaker and Grell. It shows how their interactions change over time as they face various challenges in the Black Butler universe. The story is full of interesting twists and turns that keep you hooked.