One common theme is friendship turned into something more. Since they are both Hogwarts students, their initial acquaintance as friends or at least friendly rivals can evolve into a deeper, romantic or very close relationship. Another theme is the exploration of their different personalities. Cedric is often seen as the more perfect, well - liked student, while Harry has his own charm and heroism, and fanfictions often play with how these two different personalities interact and attract each other.
You can try fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions, including Cedric Harry slash ones. Just use the search function and type in relevant keywords to find what you're looking for.
One great Cedric Harry slash fanfiction could be 'The Bond Beyond Houses'. It beautifully explores their relationship in the context of Hogwarts. The author does a wonderful job of building a connection between them that goes beyond just friendship.
Accurate portrayal of the 'Harry Potter' universe is key. This includes getting the details right, like the spells, the layout of Hogwarts, and the different houses. If it's a Cedric Diggory slash fanfiction, it should also show how his relationship fits into this magical world. For example, how their relationship is affected by the expectations of their respective houses or the overarching battle between good and evil in the wizarding world.
Well, there's 'A Different Sort of Friendship'. In this fanfiction, the author takes the idea of Harry and Cedric's relationship and twists it in a unique way. It shows how their initial rivalry could turn into a deep emotional connection. Also, 'Harry and Cedric: The Untold Story' is great as it fills in the gaps in their relationship that the original books didn't fully explore.
Well, 'Cedric and the Hidden Affections' is quite a good one too. It presents a unique take on Cedric Diggory's character and his possible relationships. It starts with a simple encounter and then gradually builds up the relationship in a very engaging way. The story also includes some elements from the original 'Harry Potter' plot, which makes it feel more connected to the magical universe we all love.
Well, in some fanfictions, Cedric might use his magical skills to shield Harry from physical attacks. For example, he could cast protective spells like Protego Maxima to create a strong shield around Harry when they are in danger. Maybe in a situation where dark wizards are attacking, Cedric steps in front of Harry and uses his wand to fend off the spells aimed at Harry.
One common theme is friendship. Since they were both Hogwarts students, many fanfictions explore how they could have been better friends. Another theme is rivalry turned into respect. Given their initial competition in the Triwizard Tournament, a lot of stories show how they grew to respect each other. Also, the theme of sacrifice often comes up, especially related to Cedric's death and how it affected Harry.