One appeal is the novelty. It's not something you'd expect in the normal Harry Potter world, so it grabs attention. Fans like to see familiar characters in new and unexpected situations.
In some Harry Potter fanfictions, the concept of Severus Snape being mpreg (male pregnancy) is a rather unique and creative idea. It often explores different aspects of Snape's character in new and unexpected ways. For example, it might show a more vulnerable side of him as he experiences the physical and emotional changes that come with pregnancy. Some fanfictions use this concept to build deeper relationships between Snape and other characters, like Harry Potter himself, who could be involved in a more complex dynamic with a pregnant Snape.
One common theme is the exploration of unexpected relationships. Since this is a rather unconventional pairing, the fanfictions often focus on how Harry and Snape come to terms with their feelings for each other. Another theme is the reaction of the wizarding community. How do their friends, foes, and the Hogwarts faculty respond to this strange situation? It's also about the challenges that come with a male pregnancy in a magical world, like dealing with magical remedies and potions for the pregnancy.
Most mainstream 'Harry Potter' fans might not be into mpreg fanfiction. It's a very niche and often not in line with the general feel of the original series. If you still want to find some, try using very specific search terms on fanfiction platforms. But be aware that the quality and acceptability of such works can vary greatly, and you may encounter some that are not well - written or are just too outlandish for your taste.
There's also 'Love Beyond Expectations'. This one stands out as it not only focuses on the mpreg aspect but also on how the wizarding world reacts to such an unusual situation. It's a story that combines elements of drama, mystery, and of course, the unique relationship between Harry and Snape.
Another theme could be the reaction of the wizarding world. Given their history and the rather unexpected nature of such a situation, how would the likes of Hogwarts staff, Harry's friends, and the general wizarding community respond? It can create a lot of drama and intrigue.
Well, it changes their dynamics completely. Usually, Severus has been somewhat of an antagonist to Harry. But with Harry being pregnant, Severus has to step into a more protective role. He can't just be the strict teacher or the person who is constantly at odds with Harry.
One possible plot idea could be how Snape deals with the physical and emotional changes during the pregnancy while still trying to maintain his role at Hogwarts. Another could be the reactions of other characters like Harry, Hermione, and Ron when they find out.
A lot of fanfic writers will create unique storylines for Snape's courtship. They might introduce an original character who manages to break through Snape's tough exterior. His courtship would then involve him struggling with his own insecurities and his reputation. This character might see the good in him that others overlook. There could be moments of tension and misunderstanding, but also deep, meaningful conversations as they get to know each other better.
Often in fanfiction, the ring can be a plot device. It could be that Harry Potter unknowingly has a connection to the ring, and Severus Snape has to keep it from falling into the wrong hands. This creates a situation where Snape has to protect both Harry and the ring, leading to some tense and interesting storylines.