The 'Light Side After War' theme in fanfiction can show up in many ways. One way is through the healing of characters who were traumatized by the war. We might see Ron dealing with his insecurities in a more positive way, using his loyalty and humor to bring joy to those around him. Also, the Ministry of Magic could be reformed in these fanfictions. New laws are made to ensure equality and justice, and the characters play important roles in this process. They might start new initiatives to help orphans or those who lost their homes during the war.
There are fanfictions where Hermione starts a magical library project in the post - war world. She collects all the lost and damaged magical books and restores them. This helps in preserving the wizarding culture and also serves as a way to heal the community. Also, Neville could be the focus, as he uses his herbology skills to create a magical garden that provides healing plants for those affected by the war, both physically and mentally.
It could be Ron. Maybe he starts to feel that Harry has changed too much after the war and is no longer the friend he once knew. He might be influenced by outside forces or his own insecurities. Another possibility is Hermione. If she gets too involved in the new Ministry politics and starts to believe that Harry's actions are not in line with the new wizarding order, she could turn on him.
Perhaps Harry meets magical creatures that are rarely seen by wizards. Since he is out exploring after the war, he might stumble upon a group of centaurs who have their own unique wisdom about magic and the future. He could also encounter veelas, and through his interactions with them, learn more about the different cultures within the magical world. There's also a chance he meets other young wizards who are on their own adventures, and they form a sort of traveling group together.
In such a fanfiction, Harry might initially struggle with his blindness. Ginny, being the strong - willed character she is, would encourage him to not let it hold him back. There could be a lot of emotional moments between them, like when Harry first realizes he can no longer see Ginny's beautiful face. Ginny, on the other hand, would assure him that their love is not based on sight. They might also encounter difficulties from the wizarding society that doesn't fully understand how to deal with a war - hero - turned - disabled, but they would face it all together.
His character would likely become more introspective. Without his friends always around, he'd have to face his inner thoughts and feelings. He might become more self - reliant and learn to trust his own judgment even more.
In Harry Potter fanfiction, life after war could be a time of rebuilding. The wizarding world might focus on restoring Hogwarts to its former glory. Wizards and witches would come together to repair the damaged parts of the school, like the Great Hall which may have been scarred during the battles. They would also work on mending relationships. For example, some families who were on opposite sides during the war would try to reconcile. And there could be new magical laws and regulations to prevent another such dark time from occurring.
One possible reason could be that he is suffering from post - traumatic stress disorder. After all he has been through, he might want to isolate himself from the wizarding world to heal. Another reason could be that he feels a sense of guilt for those who died in the war, and disappearing is his way of punishing himself.
There could be a story focused on the relationships that form after the war. For example, Neville and Luna might start a magical plant research project together, and their friendship could deepen into something more romantic over time as they work side by side.
One interesting plot could be about the rebuilding of Hogwarts. Maybe the characters come together to restore the damaged parts of the school, using magic in creative ways. They might also find hidden secrets during the rebuilding process.