A possible plot is that Harry and Severus, now married, find out that there is a prophecy about their unborn child. The prophecy states that the child will either bring great peace or great chaos to the wizarding world. As Severus is pregnant, they are constantly on guard against dark wizards who want to either use or destroy the baby. They seek the help of old friends like Hermione and Ron. Together, they research ancient magic texts to find a way to ensure the baby will be a force for good. Along the way, Harry and Severus grow closer and learn more about each other's past traumas.
One plot idea could be that they face opposition from the wizarding community due to their past enmity. But they work together to overcome it. For example, they might hold a press conference in Diagon Alley to explain their relationship. Another idea is that Severus, being pregnant, discovers a new potion related to the health of the baby and the magical bond between him and Harry. And they could also go on a journey to find a magical artifact that will protect their unborn child from dark forces.
One idea could be them having to deal with the reactions of their friends and family. For example, Harry's friends from Gryffindor might be initially shocked but then come to accept it as they see how happy Draco and Harry are together. Another plot could involve them facing some sort of magical mystery or threat that only their combined skills can solve, which also strengthens their bond as a married couple.
One idea could be that they face opposition from some in the wizarding world who still hold onto the traditional views of pure - blood and half - blood relationships. They then have to fight to prove that their love is stronger than these archaic beliefs. Another plot could involve them having to deal with a new dark threat while also planning their wedding, adding a lot of tension and drama to the story.
Perhaps the story could focus on how they balance their normal lives with the impending arrival of the baby. Harry is still an Auror and Ginny is a Quidditch player. They have to figure out how to continue with their careers while also getting ready for parenthood. There could be a sub - plot where they consider moving to a safer location, away from the hustle and bustle of the wizarding world, but then realize that they need the support of their friends and family, so they stay put and make their current home more baby - friendly.
A great plot point would be the exploration of their past traumas. Severus has his childhood issues and his complicated relationship with Lily, and Sirius has his family problems and his time in Azkaban. In the fanfiction, their marriage could be a way for them to heal each other. They could support each other through nightmares and flashbacks. Additionally, a plot point could be their participation in wizarding politics together. As a married couple, they could advocate for new laws or reforms in the wizarding world, like better treatment for werewolves or more inclusive education at Hogwarts.
One plot idea could be that Severus and Lily, after getting married, have to deal with the secrets Severus has from his Death Eater past. Another could be them raising Harry together, but facing opposition from the wizarding world due to Severus' former associations. A third idea might be that they discover a new magical threat and use their combined knowledge to fight it, all while strengthening their relationship.
Well, a plot could involve Severus using his potions expertise to ensure a healthy pregnancy for Hermione. Since they come from different backgrounds, there could be a cultural clash within the wizarding society regarding their relationship and the pregnancy. And perhaps the baby has some unique magical abilities that start to show even before it's born, which attracts the attention of both good and bad wizards.
One plot idea could be that Raven discovers she's pregnant in a world full of chaos and has to find a safe place for her unborn child. Maybe she teams up with some unexpected allies who help her on this journey.
One plot idea could be that they work together to reform Hogwarts' curriculum. Hermione's thirst for knowledge and Severus' deep understanding of magic combine to create a more inclusive and advanced study plan for students. They might face opposition from traditionalists at first, but their united front and the obvious benefits to the students eventually win everyone over.
One interesting plot idea could be a story that focuses on their wedding preparations. It could show how Naruto, who is not used to all the formalities, struggles with choosing the right wedding kimono or learning the proper wedding etiquette. Hinata, on the other hand, is more in tune with the traditional aspects but is nervous about becoming the wife of the Hokage. Another idea could be a time - travel fanfic where they go back in time to their first meetings and relive those moments with the knowledge of their future together. It would be a chance for them to see how far they've come and how their relationship has developed over the years.
One interesting plot idea could be the wedding planning itself. Edward might be clueless about most of the traditional wedding stuff, like choosing the right flowers or the color scheme, and Winry has to patiently guide him. Another idea could be a pre - wedding adventure where they have to overcome some final alchemical or mechanical challenges together, which strengthens their bond even more before the big day. Maybe there could also be a sub - plot about their friends' reactions to the wedding, with some humorous moments like Alphonse being overly excited and trying to help in his own unique way.