Well, perhaps in the fanfiction, Harry and Hermione find a child who has special needs in terms of magic. For example, the child has an uncontrollable magical power that scares other families away. But Harry and Hermione see the potential in the child. They start to work together, with Hermione using her vast knowledge of magic and Harry using his own experiences, to help the child learn to control their power. As they do this, they form a very close family unit.
In this type of fanfiction, it could start with Harry and Hermione noticing a growing problem in the wizarding world. There are many children left orphaned or in bad situations due to the after - effects of the war. They decide to adopt one of these children. The story could then focus on how they introduce the child to their friends, like Ron and Ginny. There might be some resistance from parts of the wizarding community who don't think it's proper for two unmarried people to adopt. But Harry and Hermione prove them wrong by providing a warm, loving, and stable home for the child.
The adopted child could be a muggle - born with a great potential for magic. Maybe their parents were killed by dark wizards who were against muggles in the wizarding world. Harry and Hermione, having both experienced prejudice, would be determined to give this child a chance.
In this fanfiction, the plot could start with Harry and Hermione realizing that they want to start a family together in a non - traditional way. They find a baby who has some special powers or a mysterious background. As they adopt the baby, they have to figure out how to raise it while also juggling their own lives as important figures in the wizarding world. They may need to seek help from their friends like Ron and Ginny to create a stable and loving environment for the baby.
Perhaps in the fanfiction, Harry and Hermione raise a child who has a connection to a long - forgotten dark magic. They have to protect the child from those who would use the child's power for evil. Along the way, they face challenges in the wizarding world where some people are suspicious of their decision to raise this special child. But they stand strong, using their combined knowledge and skills to keep the child safe and raise it with good values.
There could be a new dark wizard or witch emerging. This character could be jealous of Harry and Hermione's influence and see the baby as a way to get to them. They might try to harm the baby or turn it against Harry and Hermione, creating a lot of conflict and danger in the story.
In the fanfiction, perhaps the Ministry of Magic has some concerns about Hermione and Draco adopting Teddy. Since Teddy is the son of Remus Lupin and Nymphadora Tonks, and with his werewolf heritage, they might have to go through a lot of red tape. Hermione, being the brilliant witch she is, would use her knowledge of the law to fight for their right to adopt Teddy. Draco, on the other hand, would use his family's influence and wealth in a more positive way this time. Teddy would start to see them as his real parents, and they would have to deal with the challenges of raising a magical child who has unique abilities and needs.
One idea could be that their child discovers a hidden magical ability that neither Harry nor Hermione possess. For example, the ability to communicate with magical creatures in a unique way. Another could be that the child gets into trouble at Hogwarts by accidentally stumbling upon a long - forgotten and dangerous spell.
It could be a child of a minor god who has been overlooked. Maybe the child of Hecate, a young demigod with some really interesting magic powers that Percy and Artemis see potential in.
They might face social challenges. In the wizarding world, there could be those who don't approve of their relationship or their decision to raise a child together. Also, financial challenges could arise. Even though they are heroes, they still need to provide for the child's needs, like education at Hogwarts which might have costs associated with it.
Maybe at first Teddy is a bit shy and reserved, but as Harry and Ginny show him love and support, he begins to open up. They could also have some challenges like dealing with Teddy's occasional magical outbursts that come with his young age and powerful magic inheritance. Harry, having been through so much himself, can be a great mentor to Teddy in controlling his magic.
The plot might involve Fenrir and Remus rescuing Harry from the Dursleys. They see the neglect and abuse he endures there. As they raise Harry, they have to deal with their own internal struggles. Remus might worry about Harry being influenced by Fenrir's more violent side, but Fenrir could be surprisingly protective of Harry. They would have to navigate the wizarding society which is often prejudiced against werewolves while also preparing Harry to face his destiny against Voldemort.