What are the common themes in 'Harry is Castiel's mate' fanfictions?

One common theme is the struggle with identity. Harry, coming from his own world, and Demetri from his vampire world, both have to re - evaluate who they are in relation to being mates. Another theme is acceptance, as they often face opposition from their respective communities.

One common theme is loyalty. Since they are mates, they show unwavering loyalty to each other, like in many fics where Harry stands by Remus during his werewolf - related problems, and Remus is always there to protect Harry. Another theme is mentorship, as Remus often imparts his knowledge of magic and the wizarding world to Harry.

One common theme is the exploration of power dynamics. Even though Harry is the submissive mate, there's often a struggle and negotiation of power within the relationship. Another theme could be self - discovery. Harry might discover new aspects of himself in this different role. And also, the theme of acceptance, both from themselves and from others around them in the story's universe.

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.

A common theme is the struggle between his angelic duties and his loyalty to the Winchesters. Castiel often has to choose between what his angel brethren expect of him and what he believes is right in helping Sam and Dean.

Friendship is also a big theme. Harry and Castiel are from different universes, so the development of their friendship is often at the center of the stories. They have to overcome cultural and power - based differences to become friends, which makes for an interesting read.

One main theme is acceptance. Harry has to accept his new role as Fenrir's mate, which is not easy considering Fenrir's reputation in the wizarding world. Another theme is identity. His identity changes as he is now linked to Fenrir.

One common theme is the struggle for control. Harry has to deal with Castiel's power and sometimes they might fight for who's in charge. Another theme is the exploration of new abilities. Harry gets access to Castiel's angelic powers and has to learn how to use them.

Themes of protection and destiny are also common. Given Castiel's role as an angel, there's often a sense of him protecting Harry from various threats. Destiny comes into play as Harry might be seen as having a special purpose in both worlds. In some stories, it's about uniting the two worlds, which means Harry has to overcome many obstacles. There can also be themes of friendship, as Harry's friends from the wizarding world react to his newfound angelic heritage and he has to deal with new relationships in the Supernatural world as well.

Love against all odds is also a prevalent theme. Given their different natures and the fact that they are from different fictional universes, their love (or the development of their relationship) is often depicted as something that has to overcome many obstacles. This can include the disapproval of their respective friends or the challenges of co - existing in a world that doesn't understand their relationship.