Definitely. There are fanfictions that blend the two universes in unique ways. For example, some might have Castiel interacting with the Hogwarts professors, sharing his otherworldly knowledge. It's a great way to see two beloved fictional worlds collide.
One common theme is loyalty. Castiel is often depicted as extremely loyal to Dean, and this loyalty is tested in various ways in the fanfics. Another theme is sacrifice. They are willing to sacrifice for each other. For example, in many stories, Castiel might sacrifice his angelic powers for Dean.
Another theme is the struggle between their different natures. Castiel being an angel and Dean being a human hunter. This creates a lot of internal and external conflict in the stories, like in 'The Clash of Worlds' fanfiction where they have to overcome their differences to be together.
A lot of these fanfictions also focus on the idea of forbidden love. Castiel is an angel and Dean is a human hunter, and their relationship goes against the norms of both their worlds. This adds a layer of tension and drama. Additionally, themes of sacrifice and loyalty often come up. They would do anything for each other, and this is emphasized in the more intimate and emotional 'lemon' scenes. For example, one might sacrifice their own well - being for the other's safety, which then leads to a deeper emotional connection and a more intense physical relationship.
I really like 'Castiel's Guiding Light'. In this fanfiction, the reader is lost in the dark and chaotic world of the Supernatural series. Castiel appears as a guiding light in their life. The story is filled with heart - warming moments as Castiel helps the reader understand the supernatural world and in the process, they fall for each other. Also, on fanfiction.net, you can search for more such fanfictions by using relevant tags.
One great one is 'His Dean' which really delves into Castiel's possessive nature towards Dean. It shows how Castiel's angelic intensity combines with his newfound feelings of possession in a really interesting way. The author does a wonderful job of portraying their relationship in a unique and engaging manner.
The popularity lies in the contrast of their characters. Dean is this tough, human hunter and Castiel is an otherworldly angel. Castiel's possessiveness adds a new layer to their relationship. It makes their bond more intense and passionate.
There are indeed some dean x castiel mpreg fanfiction out there. For example, some stories might explore how their relationship changes with the added element of mpreg. They could deal with the challenges they face together, like how Dean copes with Castiel being pregnant and all the emotions and responsibilities that come with it. It's an interesting concept in the world of fanfiction.
The appeal lies in the combination of two very different but popular universes. It's exciting to see how Castiel's celestial being would fit into the magical world of Harry Potter.
Well, 'Angelic Devotion' is a dean x castiel fanfic that I quite like. It shows how Castiel's loyalty to Dean is unwavering and how they face different challenges together. Then there's 'Midnight Conversations', which has some really sweet and intense moments between the two characters. Also, 'Hunting with an Angel' is a fanfic that combines their hunting adventures with the development of their relationship.