One common theme is healing. Harry has been through a lot during the war, so in these fanfics, he often has to deal with his emotional and physical scars. Another theme is rebuilding. The wizarding world is usually in shambles after the war, and Harry is involved in putting it back together.
Well, it could be that in the fanfic, Harry realizes the full extent of the destruction the war has caused not just to people but also to the wizarding world as a whole. He might cry for the broken relationships, the damaged places, and the future that seems so uncertain now. All the trauma and stress that he bottled up during the war comes pouring out in tears.
One possible plot could be that Harry and Hermione travel the wizarding world together, documenting all the post - war changes. They might visit Hogwarts, which is being rebuilt, and help in the restoration process, reminiscing about their old school days as they do so.
In the fanfic, Harry might cry because he's now faced with the reality of having to rebuild his life. Before the war, his focus was mainly on fighting Voldemort. But after the victory, he has to figure out things like his career, his relationships, and his place in the new wizarding world. The pressure of all this new stuff can make him cry.
Another plot could be that they get involved in the political side of the post - war wizarding world. Harry, being a war hero, has a certain influence, and Daphne, coming from an old wizarding family, has her own connections. They could try to reform the Ministry of Magic, fighting against the old prejudices and corruption that might still linger after the war.
One possible plot could be Harry and Ginny starting a family. They might face challenges like dealing with the aftermath of the war in terms of PTSD for Harry. Ginny would be there to support him, and they could have a series of heartwarming moments as they adjust to a normal life together, like renovating their new home at the Burrow or taking their kids on their first broomstick rides.
Another character that could be significant is Neville. Since he also played a crucial role in the war, he might be part of the story. Maybe he and Harry work together on some initiatives in Hogwarts or in the wizarding community at large, and Ginny is there to support them, making Neville an important part of the overall narrative.
Well, George Weasley could be a main character. After losing Fred, he could be trying to keep the joke shop going while also dealing with his grief in a post - war world. Cho Chang might be another main character. She could be working with international wizards to strengthen relations between different wizarding communities after the war. And Seamus Finnigan could be part of the group. He could be involved in some magical research related to how to prevent future dark wizards from rising, using his experiences from fighting in the war.
After the war in Harry Potter fanfic, life could be about finding new identities. The Death Eaters who survived might be trying to reintegrate into society, which would be a huge challenge. Some might be in hiding, fearing retribution. On the other hand, the heroes like Ron would be enjoying a new - found fame. He could be using his status to promote Weasley's Wizard Wheezes products even more widely. And Ginny might be writing articles for the Daily Prophet about the post - war situation, sharing the real stories of the people who lived through it, while also exploring her own career as a witch outside of just being Harry Potter's wife.
Hermione Granger is also a favorite. Her intelligence and determination would play a big role in the post - war rebuilding efforts. Fanfics might show her using her knowledge to make improvements in the wizarding world, like reforming the education system at Hogwarts.