One main theme is identity. They have to come to terms with being related to Snape and how that changes their self - perception. Another is family, as they navigate their new family structure.
The main themes often include acceptance. Harry, who has always seen Snape as an adversary, has to accept him as a father. Draco also has to accept Harry as his brother. And there's also the theme of redemption. Snape's relationship with them can be a path for his own redemption in these fanfictions. Also, there's the exploration of the magical heritage they inherit from Snape, which can lead to all sorts of magical adventures and challenges.
One main theme could be identity crisis. Since they are not related to their original parents in the fanfiction, they would have to re - evaluate who they are. Another theme might be family secrets. Snape having kept them as his children hidden would create a lot of mystery.
One main theme is family. It shows how family isn't always about blood relation, but also about the bond that forms. Another theme could be redemption, especially for Snape as he tries to be a better father to Harry and Draco.
Magic and its role in their lives is a recurring theme as well. Their unique magical abilities as twins might be explored, or how they use magic to overcome challenges together or separately. Also, the theme of loyalty often comes up. They have to decide where their loyalties lie, whether it's to their twin, their family, or their own beliefs.
Well, I've read a few. In one of them, the fact that they are Snape's twins made them more protective of each other in a very different way than in the original story. Their shared heritage led to some really interesting magical developments too, which was quite cool.
I'm not really into that kind of fanfiction myself, but you can try looking on some major fanfiction websites like Archive of Our Own. They have a vast collection of fanfictions, and you might be able to find something related to Snape, Harry, and Draco's interactions that doesn't cross inappropriate boundaries.
The theme of hidden emotions is prevalent. Snape is a very reserved character in the original books. In fanfictions where he admires Harry, his emotions are often hidden beneath his stern exterior. These stories explore how those emotions gradually surface and how Harry responds to this unexpected side of Snape.
One common theme is redemption. For example, Draco often has a journey of redemption where he moves away from his family's dark past with the influence of Harry and Snape. Another theme is the exploration of complex relationships. They are characters who have had a lot of animosity in the original story, so in fanfiction, seeing how they navigate new relationships with each other is very interesting.
One common theme is redemption. For example, Draco often has a journey of redemption in these fanfictions. He may realize the error of his ways and try to make amends, especially in relation to Harry and Snape. Snape's complex loyalties also play into this theme as his actions are re - examined in the context of the fanfiction.
Well, family drama is a very common theme. Harry and Snape would need to build a relationship, which would be full of tension and misunderstandings at first. The theme of legacy also plays a role. Harry would inherit not only from the Potters but also from Snape. And there's often the theme of acceptance, both Harry accepting Snape as his father and the wizarding world accepting this new family situation.
One common theme is family secrets. Since it's a big revelation that Harry and Draco are Snape's children, there's often a lot of secrecy and mystery surrounding it. Another theme is redemption. Snape might be seen as trying to atone for his past actions through his relationship with his sons. And of course, the theme of changing relationships is also there, like how Harry and Draco's relationship evolves from enemies to brothers.