Well, the theme of self - discovery is quite common. Harry and Draco both have complex personalities, and fanfics often delve into how they come to understand themselves better through their interactions with each other. Additionally, the idea of forging an alliance against a greater evil is also popular. It's interesting to see how two characters who were once at odds can work together for the greater good. There are also fanfics that focus on their shared experiences at Hogwarts, like dealing with difficult professors or magical creatures.
One popular theme is friendship. Despite their enmity in the original books, fanfics often explore them becoming friends. Another theme is redemption. Draco's character has room for growth and change, and many fanfics focus on his journey towards redemption. Also, the idea of them working together against a common enemy, like a new dark wizard threat, is quite common in these fanfics.
One common theme is the exploration of power dynamics. When Draco bites Harry, it can represent a shift in power, either Draco asserting himself in a new way or Harry having to deal with a new vulnerability. Another theme is the idea of forbidden love. The biting could be seen as a very physical and somewhat violent act that still has an undercurrent of attraction between them. It's like they're breaking the rules of their normal relationship in Hogwarts.
Another common theme is the exploration of their hidden feelings. In a lot of fanfictions, Harry and Draco have suppressed emotions for each other that they gradually come to terms with. This often involves a lot of internal monologue and angst - filled moments. It can be really interesting to see how they handle these new - found feelings in a world that may not be accepting of their relationship.
A third popular fanfic could be 'The Mirror of Ecidyrue'. It presents a very different side of their relationship compared to the others. It's quite detailed in how it shows their interactions and how they come to terms with their feelings for each other. It also has some great character development for both Harry and Draco.
One popular trope is the 'enemies - to - lovers' aspect. Since Draco and Harry were enemies in the original series, seeing them cuddle after going through a journey of changing their relationship is really appealing. Another is the 'hurt/comfort' trope. Maybe one of them is injured or emotionally distraught, and the cuddling is a form of comfort.
The popularity of 'Harry and Draco' fanfics can be attributed to the complex relationship between the two characters in the original series. They are rivals, but there's also a sense of underlying intrigue. Fanfic writers can explore what could happen if they were to put aside their differences. It allows for a lot of creative interpretations of their personalities.
The theme of redemption also often comes up. Harry's possessiveness can be seen as a way to redeem Draco in some fanfics. It's like he believes Draco can be something more than what his family has made him out to be, and his possessiveness is a driving force in that redemption process.
A frequent theme is the protection of the unborn child. In these fanfics, Harry and Draco will do whatever it takes to keep their baby safe from any harm, whether it's from dark wizards or from the prejudice of others. Also, the theme of self - discovery is common. Through this experience, they learn more about themselves, their capabilities, and their true feelings for each other.
One common theme is the struggle with identity. Draco, being from a traditional pure - blood family, his obsession with Harry, who represents a different set of values, challenges his own identity. Another theme is redemption. His obsession can sometimes lead to him trying to redeem himself in Harry's eyes.
One common theme is redemption. Draco often has to face his past actions and find a way to be worthy of Harry's love. Another theme is secrecy. Since their relationship might not be accepted in the wizarding world, they have to keep it a secret, which adds a lot of tension to the story.