I remember reading a fanfic called 'Castiel's Wounds'. In this story, Castiel is severely injured during a battle with demons. The fic focuses on how Sam and Dean try to help him recover, and the relationship dynamics between the three are really well - written. It shows Castiel's vulnerability in a very believable way. There's also 'A World of Hurt' which explores Castiel's hurt in a post - apocalyptic setting, adding an extra layer of tension and drama.
One of the most heart - breaking ones has to be 'In the Depths of Castiel's Pain'. In this fanfic, Castiel endures so much suffering, both from external forces and his own self - loathing. The story is filled with his silent screams of agony that are almost palpable. 'When Castiel Weeps' is also a tear - jerker. It focuses on a time when Castiel is hurt so badly that he starts to question his very existence, and the emotional journey he goes through is just so sad.
One common theme is redemption. When Castiel is hurt, often the story will revolve around him finding a way to redeem himself, whether it's from a mistake he made that led to his pain or just from a sense of lost purpose. For example, in some fanfictions, he might have been hurt because he trusted the wrong entity and then has to make amends.
One great aspect of Castiel and Dean in fanfiction is their dynamic. Their relationship, which is complex in the show, can be explored even further in fanfictions. Writers often delve into their unspoken bond, creating scenarios where they support each other in ways not shown in the original series. For example, some fanfictions might have them going on a road trip together just for the sake of exploring new places and having deep conversations about their pasts and futures.
Fanfiction about Castiel in Supernatural can be really interesting. Some 'hopeless' fanfictions might focus on his often tragic or difficult situations in the show. They could explore his loyalty to Dean and Sam even when things seem truly hopeless for him. Maybe it's about his struggle with his angelic nature and the chaos of the human world he's thrown into.
One common theme is the vulnerability of Castiel. When he's hurt, it shows a side of him that's not often seen - his fragility. It makes the readers feel more sympathetic towards him.
The theme of Castiel being tortured, either physically or mentally, is quite prevalent. It could be at the hands of demons or other angels. And then there's the aftermath of his hurt, like his struggle to regain his strength or his faith. Also, his relationship with Dean often takes center stage during his time of hurt, with themes of Dean's protectiveness and Castiel's dependence on him.
One common theme is isolation. Castiel often feels alone in his pain, whether it's due to his otherworldly nature or the actions of those around him. Another theme is betrayal. He is frequently betrayed in these stories, which causes him deep emotional harm. For example, when his allies turn on him or when he is misled by false friends.
There's also 'Castiel's Painful Journey'. In this fanfiction, Castiel endures a great deal of hurt due to a powerful spell that backfires on him. It details his journey of recovery and the relationships that help him through it. He has to face his own insecurities and fears as he heals, which makes for a very engaging read.
Castiel's relationship with his powers might also change. He may have to limit his use of angelic powers to protect the unborn entity. This can cause internal conflict as he is used to using his powers freely. At the same time, it can also show his growth as a character, as he is willing to sacrifice some of his power for the sake of something new and precious.