In many such fanfictions, Castiel's character development often revolves around his newfound vulnerability. With his hurt wings, he can't be as strong or as mobile as before. This forces him to rely on others more, which makes him more empathetic and less of the aloof angel he used to be.
There's a fanfic titled 'Castiel's Broken Wings'. In this, the story focuses on how Castiel's hurt wings not only physically affect him but also his mental state. It's a very emotional read as it shows his vulnerability.
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 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.
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.
Another theme is the symbolism of his wings. Some fanfictions explore how his wings represent his angelic nature and his connection to Heaven. They might also delve into how the state of his wings reflects his emotional and spiritual state, like broken wings when he's feeling lost or damaged.
One great fanfiction could be 'Castiel's Hidden Wings'. In this story, Dean discovers Castiel's wings in a moment of crisis. It's a beautifully written piece that delves into the deep bond between them. The author describes Castiel's wings in vivid detail, as if they were a part of his very soul. Another good one is 'Wings of Redemption'. Here, Castiel's wings are damaged, and Dean helps him heal them. It shows their friendship and how they rely on each other.
One good 'emotionally hurt Castiel fanfiction' is 'Fallen Angel's Pain' which delves deep into his inner turmoil and emotional wounds. It shows how he copes with the rejections and losses he has faced in his journey. Another one could be 'Castiel's Silent Sorrow' where his emotional distress is palpable as he struggles with his loyalty and the changing dynamics around him.