In some fanfictions, Dean kidnaps Cas because he has been influenced by a powerful and dark force. This leads to a complex relationship dynamic where Cas has to figure out how to break the spell on Dean while being held captive. It often involves a lot of emotional turmoil and some intense scenes of Cas trying to reach the real Dean inside.
There are fanfictions where Dean kidnaps Cas out of jealousy. Maybe he saw Cas getting too close to someone else and in a fit of rage and possessiveness, he takes Cas. This then unfolds into a story of Cas trying to understand Dean's actions and Dean coming to terms with his own emotions.
You can start by looking on Archive of Our Own (AO3). It has a vast collection of Supernatural fanfictions, and you're likely to find several stories with the 'dean kidnaps cas' theme there.
One great 'dean and cas fanfiction' is 'AUs Galore' which explores different alternate universes for the characters. It's really interesting as it shows different sides of their relationship.
One great fanfiction is 'AUs and What-Ifs'. It explores different alternate universes for Cas and Dean. It's really interesting as it shows their relationship in various scenarios that the show didn't touch on. Another one is 'The Road Less Traveled' which delves deep into their emotional bond and how they face challenges together outside of the main plot of the series.
I really like 'The Kiss in the Rain'. It's a bit of a classic in the dean and cas fanfiction world. The rain - soaked setting for their kiss adds a lot of drama and emotion. The story around it also does a good job of showing how their relationship has evolved over time.
One popular theme is the friendship - to - more relationship. Fans often explore how their deep bond could develop into something romantic. Another theme is their battles together against the supernatural. Writers love to describe their teamwork and how they rely on each other in dangerous situations.
The character development is often a great feature. Writers can really explore Dean and Cas in ways that the original show might not have had time for. They can dig deep into their personalities and how they interact with each other on a more intimate level.
Another theme is sacrifice. Given the nature of the Supernatural world, they often put themselves in harm's way for each other. Fanfictions play on this selfless aspect of their relationship. For example, Cas might sacrifice his grace to save Dean, or Dean might risk his life to rescue Cas. It shows the depth of their bond.
Another theme is the slow - burn romance. Writers often take their time building up the relationship between Cas and Dean. They might start as friends or comrades, and over time, the feelings of love gradually develop. It could involve a lot of longing looks, small acts of kindness that slowly turn into deeper affection.
One common theme is the struggle with their identities. Both Dean and Cas have complex identities and in many fanfictions, their kiss is a moment of acceptance of themselves and each other. For example, Cas coming to terms with his feelings as an angel while having human - like emotions for Dean.
One great piece of Supernatural Dean Cas fanfiction is 'AUs Are Made of This' which offers a really interesting alternate universe take on their relationship. It's full of heart - warming moments.