One common theme is redemption. Since Snape has had a rather complex and morally ambiguous past in the original story, in these fanfictions, his survival often leads to him seeking redemption. He tries to make up for his past mistakes, especially those related to his treatment of students like Harry Potter. Another theme is self - discovery. Surviving gives him a chance to explore parts of himself that he may have neglected or been unable to before due to his loyalty to Dumbledore and his role as a spy. For example, he might discover new interests or talents.
The theme of forgiveness is also quite prevalent. Snape has to face those who were hurt by his actions in the past, and the fanfictions often explore whether they can forgive him. At the same time, he has to forgive himself. Also, there's the theme of new relationships. His survival can lead to the formation of new friendships or even romantic relationships. Maybe he forms a bond with a character who previously only saw him as an enemy. This is different from his rather isolated existence in the original story.
There's 'Surviving Snape' which is a really unique take on the concept. In this fanfiction, Snape not only survives but also discovers new magical abilities that he never knew he had. It's a story full of mystery and adventure as he tries to figure out what these new powers mean and how he can use them for the greater good. It also has some really interesting interactions between Snape and the other Hogwarts professors who are both shocked and relieved to see him alive.
Another theme is his loyalty. Despite his prickly exterior, Snape was fiercely loyal, and in fanfictions about his 'fragility', this loyalty can be a double - edged sword. It can put him in difficult situations where he has to sacrifice his own well - being, like when he protected Harry for Lily's sake.
Common themes? Well, there's the exploration of Snape's past. In many female - centered fanfictions, the female character uncovers the secrets of Snape's past and this helps in either mending his broken soul or understanding him better. Transformation is also a theme. Snape may transform as a person due to his interactions with the female character. Also, there's the theme of sacrifice. The female or Snape might sacrifice something for the other's well - being.
One common theme is his relationship with Lily. Fanfictions often explore how his love for her started, grew, and how it affected him. For example, in many stories, his actions are directly or indirectly related to his feelings for Lily.
One common theme is acceptance. It often explores how Snape, as a trans character, seeks acceptance in the rather traditional and sometimes unforgiving wizarding society. Another theme is identity struggle. He has to deal with his own understanding of his gender while also dealing with the expectations of others around him. For example, in Hogwarts, he might face discrimination or misunderstanding from students or other staff members.
There are fics that focus on Snape mentoring Hermonie in a more in - depth way than in the original books. This could involve him teaching her dark arts defense from a more practical and less textbook - based perspective. Another recurring theme is the idea of Hermonie being the one to truly understand Snape's pain, especially related to his unrequited love for Lily. She becomes a confidante for him, and this forms the basis of their relationship in many fanfictions.
One common theme is often the exploration of Snape's complex character in a different light. His submissive side might be shown in relationships, perhaps in a romantic or platonic power - dynamic context. For example, in some fanfics, he could be submissive to a more powerful magical being.
One common theme is redemption. Since both characters have had their share of dark moments or are misjudged, fanfictions often explore their journey towards redemption. For example, Snape's actions towards the end of the original series are often further explored in terms of his true motives and how he might be redeemed in the eyes of others, especially Remus.
One common theme is the clash of different supernatural elements. Snape's magic from the Harry Potter world against the vampires and werewolves of Twilight. Another could be the idea of love and sacrifice, which is big in both universes.
Often, the theme of self - discovery is present. Snape discovers new aspects of himself during the pregnancy. He might find that he has more capacity for love and protection than he thought. Also, the theme of dealing with the judgment of others. In the wizarding world, his situation might be met with raised eyebrows, and fanfictions explore how he and his partner handle this. And the theme of hope for a different future. The pregnancy symbolizes a new start, and Snape might start to hope for a more positive and less dark future for himself and his family.