Maybe Harry feels a sense of guilt. In the context of the war, he might think that he's failed in some way by getting into this unexpected situation. He could believe that his new condition might put others at risk or that he's no longer the hero everyone expects him to be. So, to protect others or to avoid the shame, he decides to run away.
Some in the wizarding world might be very concerned. His friends, like Hermione and Ron, would probably be worried sick and immediately start looking for him. They would understand that he must be going through a lot and would be eager to help him through whatever he's facing.
One possibility is that Hermione might initially be shocked and angry. Snape was not always kind to her during school, but now she realizes his true role in the war. She could confront him about his past behavior, yet also express gratitude for his sacrifices. For example, she might say something like 'I can't believe all you did, even after how you treated us at times.'
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.
He might become very self - reliant. Since he has no one to depend on, he learns to take care of himself in every aspect, like finding his own place to live and getting food. He could also start to study magic more independently, exploring areas that were previously forbidden or not well - known.
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.
Well, they could embark on a quest to find a powerful magical artifact that could help in the fight against Voldemort. Sirius would use his skills as an Animagus and his knowledge of the wizarding world's hidden corners, while Harry would contribute his own unique magic. Along the way, they would face various challenges, like dark wizards sent by Voldemort to stop them, and have to outwit magical creatures protecting the artifact. It would be a great adventure filled with danger and discovery.
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.
Harry might become more at peace. After all the battles and losses, he could focus on the positive aspects of life. Luna, on the other hand, could become more confident in sharing her ideas. She no longer has to be in the shadow of the war and can be more outspoken.
They could become very close friends. After the war, they both have a shared understanding of the trauma and changes they've been through. They might support each other in rebuilding their lives at Hogwarts or in the wizarding world in general.