What are some possible storylines for 'Harry Potter Alone After the War' fanfiction?

In this fanfiction, Harry could be alone because he feels estranged from his friends who have moved on with their lives in different ways. So he takes on a solitary mission to protect the wizarding world in the shadows. He becomes a sort of unseen guardian, constantly thwarting small threats that could potentially grow into big problems, all while dealing with his own loneliness and the memories of the war.

One possible storyline could be that Harry leaves to explore the wizarding world outside of Britain. He might go on a journey to discover new magical creatures and spells in far - off lands. Another could be that he leaves to find a place of peace and solitude, perhaps in a hidden magical enclave, to deal with the trauma of the war. And he could also leave to train young wizards in secret, away from the public eye, to ensure they are well - prepared for any future threats.

One possible storyline could be them rebuilding the wizarding world together. They might focus on restoring Hogwarts, with Ginny using her Quidditch skills to start a new team there and Harry helping with the overall magical education revival. Harry could also be involved in Auror training reform, and Ginny would support him through it all, and they'd start a family in the newly peaceful wizarding world.

One possible storyline could be Harry feeling isolated and betrayed by his friends at Hogwarts. He might decide to go off on his own adventures, exploring parts of the wizarding world that are less known, like some hidden magical forests or ancient ruins.

One possible storyline could be that Harry grows up in isolation in the cupboard under the stairs, with no real interaction with other wizards or even muggles his age. He might develop his magic skills in secret, and when he finally enters the wizarding world, he has a very different perspective compared to the original story.

One possible storyline could be Percy struggling with PTSD. He might have nightmares about the war and find it hard to reintegrate into normal life. For example, he could avoid social situations because the noise and crowds remind him of the chaos of the battlefield.

Another storyline could be that Harry is alone as he tries to break a curse that has been placed on him during the Goblet of Fire events. The curse is making him see things that aren't there and is slowly draining his magic. Since he doesn't know who to trust, he tries to find a cure by himself. He travels to different parts of Hogwarts and even outside the school grounds in search of answers, all while feeling the loneliness of being on his own.

Maybe some of the old grudges between wizarding families that were thought to be resolved start to flare up again. This could lead to a lot of political intrigue within the wizarding community. And the children of the main characters could get caught up in this web of family feuds, having to decide whether to follow their family's old ways or try to make peace.

One possible storyline could be that Harry leaves to explore the wizarding world outside of Britain. He might go on a journey to discover new magical creatures and spells that were previously unknown to him. Maybe he wants to find a place where he can truly be at peace after all the chaos of the war.

One interesting storyline could be how the wizarding world rebuilds. For example, Hogwarts might need a lot of repairs after the war. The characters could be involved in restoring the castle, classrooms, and magical artifacts.