One possible story line could be that they discover they have feelings for each other later in life, after all their adventures at Hogwarts. They get married secretly and then have a baby. The baby might inherit some very unique magical abilities, a combination of Harry's courage - related magic and Hermione's intellectual magic. And they have to protect the baby from the dark forces that still lurk in the wizarding world, just like they had to protect themselves when they were young.
In the fanfiction, it could start with an unexpected magical accident that results in Hermione getting pregnant. Harry and Hermione then have to quickly adapt to the idea of becoming parents. The baby might grow up with a lot of pressure as the child of two such well - known wizards. They could face challenges from the wizarding community who might have different opinions about their relationship. But through it all, Harry and Hermione's love for each other and their baby would be the driving force to overcome all difficulties.
Perhaps in this fanfiction, the baby is born with a special prophecy attached to it. Harry and Hermione would then be on a new mission to safeguard their child and fulfill the prophecy. The story could also focus on how they raise the baby, with Hermione's vast knowledge of magic being used to educate the child, and Harry teaching it about bravery and standing up to evil. Their friends, like Ron, would also play important roles in the baby's life, being like uncles or aunts.
The plot might revolve around how Harry and Hermione discover they are having a baby. It could be an unexpected event. Then, they start preparing for the baby's arrival. Hermione would be researching all the best magical parenting books and spells, while Harry is more focused on making sure their home is safe. They might also worry about how the baby will be accepted in the wizarding community given their unique situation of being two of the most famous wizards who were not originally a couple in the main story.
One possible plot could be that the baby sister has some unique magical abilities from the start. Maybe she can communicate with magical creatures in a way that no one else can. This could lead to all sorts of adventures where Harry and his friends have to protect her from those who might want to use her abilities for evil. For example, Voldemort's remaining followers might see her as a new threat or a tool to be used.
One possible story could be about the challenges they face as new parents. Maybe they have to protect their baby from the remaining dark forces in the wizarding world. The baby could also show signs of extraordinary magic powers at a very young age, leading to various adventures as they try to understand and control it.
Their child might be extremely intelligent, inheriting Hermione's sharp mind. He or she could also have a brave heart like Harry. Maybe the child would be a natural at magic, quickly mastering spells and showing great potential at Hogwarts.
I'm not sure if there is such a fanfiction. Fanfiction can cover a vast range of wild and creative ideas, but this particular concept seems rather unusual and might not be a common one. It could potentially exist in some niche corners of the fanfiction world, but I haven't come across it personally.
One possible plot twist could be that the baby has some unique magical abilities that neither Severus nor Hermione expected. Maybe the baby can communicate with magical creatures in a way no one has seen before. This could lead to all kinds of adventures as they try to understand and control this new ability.
One possibility is that their son inherits their magical talents. He might be extremely intelligent like Hermione and have a brave heart like Harry. He could grow up facing new threats in the wizarding world and use his parents' teachings to overcome them.
One possibility is that the story could revolve around the challenges they face as parents in the wizarding world. Since they are both well - known figures, their child might be under a lot of public scrutiny. The child could also have to deal with the legacy of Voldemort, even though he's been defeated, as there could still be remnants of his followers causing trouble.
One possible plot could be the anticipation and preparation for the baby. Harry and Ginny might be seen discussing names, decorating the nursery. They could also face some challenges like dealing with the media attention, as Harry is famous. Ginny would be experiencing the physical and emotional changes of pregnancy, and Harry would be there to support her every step of the way.
In the original Harry Potter story, Snape and Lily never had a baby. However, in fanfiction, authors can create alternate universes. They might rewrite the story so that Snape and Lily's relationship took a different turn. Maybe Snape was able to overcome his issues earlier and confess his true feelings to Lily before she got involved with James. This could potentially lead to a different timeline where they end up having a child together.