Harry could become an Auror, as he's always been good at fighting dark forces. Ginny, on the other hand, might continue her career in Quidditch. They would support each other's choices. Harry would cheer for Ginny at her matches, and Ginny would be proud of Harry for his work in keeping the wizarding world safe.
Some fanfictions might depict them as having a more adventurous post - war life. They could be involved in rebuilding the wizarding world in a more hands - on way. Harry might use his fame and Ginny her popularity among the younger wizards to bring about positive changes. Their relationship would be based on mutual respect and a shared goal of making the wizarding world a better place.
One possible story could be that after the war, Harry suffers from paraplegia due to some dark magic he endured during the final battle. Ginny stays by his side, being his strength. She helps him through the difficult process of physical therapy. Their love becomes even deeper as they face this new challenge together.
One possible reason could be that Harry was away a lot after the war, dealing with the aftermath and his newfound responsibilities. Ginny might have felt neglected. Maybe she expected more time together, but Harry was constantly occupied with things like helping to rebuild Hogwarts or being involved in the Ministry's new initiatives.
One aspect that's often shown in fanfiction is how they help each other heal from the traumas of the war. Ginny, being a strong - willed witch, supports Harry in dealing with his post - war nightmares and insecurities. Harry, in turn, encourages Ginny to pursue her dreams in the new wizarding world. Their relationship is filled with mutual understanding, love, and respect.
In certain 'Harry Ginny after the war fanfic', Harry starts to see the wizarding world in a new light. He's no longer just focused on fighting dark forces. Ginny encourages him to explore the positive aspects of the wizarding world, like the different cultures of magical creatures. Ginny also matures in how she handles relationships. She becomes more understanding of Harry's responsibilities, and they work together as a team to face any new challenges that come their way, whether it's dealing with a new threat to the wizarding world or just the normal challenges of married life.
Ginny would also support Harry by involving him in her own life. She'd share her dreams, her daily experiences at work or with friends. This would make Harry feel like he was still an important part of her world and not just someone she was taking care of. She might even try to find magical solutions to his condition, perhaps researching ancient spells or potions that could potentially help him regain some mobility.
One possible reason could be that Ginny has seen Harry change a great deal during the war. Maybe the war has left Harry with a lot of emotional baggage that he's not dealing with well, and Ginny doesn't know how to handle it. So, she decides to give him some space by ignoring him for a while.
In many fanfictions, their relationship deepens as they share the post - war responsibilities. For example, they might work together to help the families of the fallen. This shared purpose brings them closer.
Often, it's a very loving and strong relationship. They trust each other completely. Harry knows he can rely on Ginny, and Ginny has always been there for him, so when they meet after the war, it's like two halves coming back together.