One possible plotline could be that Harry discovers a hidden magical world outside of Hogwarts. Maybe he stumbles upon a group of rogue wizards who teach him their own brand of magic, away from the traditional Hogwarts curriculum.
It could also be that Harry is kidnapped by a group that wants to keep him away from Hogwarts. As he tries to escape, he encounters different magical creatures and situations. He has to rely on his own wits and the little magic he already knows to survive and find his way back to the wizarding world, all while never actually going to Hogwarts.
One possibility could be that Harry discovers he has some other magical destiny outside of Hogwarts. Maybe he is taken in by a different group of wizards who teach him their own brand of magic in a hidden location. They might believe Hogwarts is too mainstream or that Harry has a special power that needs to be nurtured away from the school.
The main antagonists could be those who don't want Harry to receive a proper Hogwarts education. Maybe some dark wizards who fear that Harry will become too powerful if he goes through the Hogwarts training. So, they plot to keep him away from Hogwarts.
Well, a plotline might revolve around the new relationships that form. For example, Neville could start a herbology club and meet a new love interest who is also passionate about plants. Also, the wizarding world might see some political changes. Maybe there would be a new Ministry of Magic with more inclusive policies after the dark times of Voldemort's regime.
In the 'harry potter after hogwarts fanfic', a really interesting plot could be about the discovery of new magical creatures or lost spells. Harry, being the adventurous type, might go on quests to explore these new elements. He could also get involved in international wizarding relations, using his fame and experience to bridge gaps between different wizarding communities around the world. This would open up a whole new world of magic for the readers to explore.
One possible plotline could be that Pansy is in a secret relationship with someone at Hogwarts, and the pregnancy is a huge shock to her and her partner. They then have to deal with the consequences, like how to hide it from other students and teachers, and what their future might hold.
Well, perhaps in 'harry goes to hogwarts later fanfiction', he could form new friendships. He might meet students from different backgrounds or even different magical cultures, which would bring a whole new dynamic to his Hogwarts experience. He could also discover new magical abilities or spells that were previously unknown to him, which would help him in his adventures at Hogwarts.
Ron could also be important. He might be torn between his loyalty to Hogwarts and his friendship with Harry. Eventually, he could choose to leave Hogwarts to be with Harry, bringing his Weasley family charm and his own brand of magic to the group. The Weasley twins might also get involved, providing some much - needed humor and their unique magical inventions.
One possibility is that Harry grows up in the Muggle world completely unaware of his wizarding heritage. He might lead a normal life, going to a regular school, making Muggle friends, and having no idea about the magical world that could have been his. Maybe he has a natural aptitude for something like martial arts or a particular academic subject that in the wizarding world would be replaced by magic.
Well, a plot might involve Bellatrix being involved in some sort of forbidden magic experiment at Hogwarts. She could be trying to impress the Dark Lord even as a student. Or it could be about her trying to undermine Dumbledore's authority at Hogwarts. For example, she might spread rumors or cause small acts of chaos around the school to show her disdain for the more light - hearted and inclusive Hogwarts environment.
Well, he might discover some unique magical creatures in Canada that are different from those in the UK. Maybe he meets a friendly Canadian wizard who teaches him a special spell.