One possible plot could be the challenges they face as new parents. Maybe they struggle to balance their duties at the Ministry (assuming they work there) with taking care of the baby. For example, they might have to deal with sleepless nights and still be on top of their work.
The fanfiction could focus on the baby's unique magical abilities. Since Ron and Hermione are both very talented wizards, their baby might show extraordinary powers from a young age. It could be something like the baby accidentally apparating short distances when it gets excited.
Another plot could be how their friends react to the new addition. Harry, Ginny, and others might be constantly visiting and helping out. There could be some comical moments like Ron trying to teach the baby Quidditch too early and Hermione scolding him.
One possible plot twist could be that they face unexpected magical difficulties. For example, a spell gone wrong might temporarily affect their chances of having a baby. Maybe a dark magic remnant in their house, left over from their previous battles, starts to interfere with the natural process. Another twist could be that they discover a long - lost family curse that might be passed on to their potential child. This could lead them on a journey to find a cure before they actually conceive.
One possible story could be about the challenges they face as new parents. Maybe the baby has some unique magical abilities that they have to figure out how to handle. For example, the baby might accidentally make objects levitate when it gets excited, and Hermione and Ron have to find a way to teach it control in a loving yet firm way.
In this fanfiction, it might focus on how Ron's status as the baby of the family affects his relationships. For example, he could have a unique bond with his mother who dotes on him. And with his siblings, he might be the one they all feel responsible for. He could also be the source of family unity, as everyone comes together to look after him. His adventures and misadventures as the youngest could be the main theme, with his family always there to either rescue him or cheer him on.
Well, it could be about their simple daily life at the Burrow. Maybe they are helping Mrs. Weasley with the housework, and there are some cute and funny moments between them, like Ron accidentally messing up a spell while trying to assist Hermione in cleaning the dishes.
A possible plot is that they discover the baby has a very rare magical ability. This leads them on a journey to find out more about it. Maybe they have to travel to a far - off wizarding land where they meet other witches and wizards with similar powers. Along the way, they face challenges like protecting the baby from those who might want to use its power for bad. Also, the baby could bring Ron and Hermione closer as they work together to figure out this mystery about their child.
They would become more protective of each other. Ron would be more vigilant about Hermione's well - being as she is now the mother of their child. And Hermione would be more understanding of Ron's insecurities as a new father.
The fanfiction could be about how their relationship evolved to having a baby. Maybe it started as an unexpected friendship that grew into love over time. They would have to deal with the differences in their personalities. Fred being more carefree and Hermione being more studious. But their love for each other and the new baby would bring them closer together, and they'd create a unique family environment in the wizarding world.
Maybe Ron accidentally ruins Hermione's important experiment in the wizarding lab. In the fanfiction, Hermione could get revenge by getting all their mutual friends to side with her in an argument. She could present all the facts about how Ron's carelessness has cost her time and effort, making Ron feel isolated and guilty.
It could be that Ron and Hermione abandon Harry due to a prophecy that they misinterpret. They believe that by being with Harry, they will bring doom to the wizarding world. So they go into hiding. Harry, on the other hand, is determined to change the course of the prophecy. He embarks on a journey to find the truth behind it, all while feeling the pain of his friends' desertion. He has to fight against dark forces that are taking advantage of the situation.
In such a fanfiction, it might be that Harry and Ron are influenced by a powerful dark spell. This spell makes them see Hermione as a threat, so they abandon her. Hermione then has to find a way to break the spell's influence on them while also dealing with the loneliness and danger she's now in. She could seek help from other Hogwarts students or even some friendly magical creatures.