Betrayal is also a theme. Sometimes he is betrayed by those he trusts, which causes great sadness. For example, when his fellow angels turn against him. And there's the theme of unrequited love. His feelings for certain characters may not be reciprocated, adding to his sorrow. This is often explored in 'castiel sad fanfic' to show the depth of his emotional turmoil.
One 'castiel sad fanfic' you could try is 'Fallen Angel's Lament'. It delves deep into Castiel's inner turmoil and the sadness that often surrounds his character. The story really captures his struggle with his angelic nature and his experiences on Earth.
The theme of unrequited love can be common. Maybe Castiel has feelings for someone who doesn't return them. Guilt is also a big one. He might feel guilty for actions he took that had negative consequences. And the idea of being an outcast. Since he's different from both angels and humans in many ways, he often feels like an outcast, which brings about a lot of sadness in fanfictions about him.
One great 'Supernatural Castiel sad fanfiction' is 'Fallen'. It delves deep into Castiel's internal struggles after a major fall from grace. Another is 'Alone', which shows Castiel feeling isolated and sad due to his unique position among the angels and his relationship with the Winchesters. There's also 'Lost Hope' that focuses on a time when Castiel loses his faith in the mission he once held so dear.
One great 'Castiel and Gabriel fanfic' is 'Heaven's Unlikely Pair'. It beautifully explores their relationship in the context of the Supernatural universe. The story has a great plot that keeps you hooked from start to finish.
One common theme is Castiel's struggle with his angelic nature. He often has to balance his loyalty to heaven and his newfound connections with humans.
Writing fanfic with such explicit content is not appropriate. Fanfiction should generally adhere to certain ethical and moral standards, and this kind of overly sexualized and inappropriate content goes against good taste and respect for the character and the fandom community.
I'm not sure specifically what 'castiel broken fanfic' is about without reading it. It could be a fan - created story that focuses on a character named Castiel and perhaps some sort of broken or damaged state, like his broken spirit, broken relationships, or a broken situation he's in within the fanfic's universe.
Well, 'castiel lemon fanfic' often has a strong focus on the character Castiel. The 'lemon' part usually means there will be some form of romantic or sexual content, which is used to enhance the relationship exploration in the story. It may also play with different aspects of Castiel's nature, like his angelic side, and how that interacts with the more earthly or passionate elements introduced by the 'lemon' aspect. These fics can range from mildly suggestive to more explicit, but they all center around Castiel and his relationships, often with a lot of fan - based interpretations and creativity in terms of plot and character development.
Harry Potter himself would be very interesting. Castiel could be intrigued by Harry's connection to Voldemort and his role as the 'Chosen One'. He might offer Harry some unique insights from his angelic knowledge about dealing with dark forces, which could be different from what Dumbledore has taught him.