Perhaps Harry, as the master of death, discovers new magical abilities that were previously unknown. He could use these to reform the wizarding world, making it a more just and equal place for all magical beings. He might start by changing the way Hogwarts is run, introducing new classes that focus on things like equality and cooperation between different magical species.
One interesting plot development could be that Harry uses his new status as master of death to bring back some of the fallen characters, like Sirius Black or Fred Weasley. He might be able to rewrite some of the fates that were sealed during the war.
In some of these fanfictions, Harry might start exploring the dark art of necromancy secretly. He could be driven by a desire to bring back his lost loved ones, like his parents. This often leads to him having to hide his newfound interest from his friends at Hogwarts, creating a lot of internal conflict as he struggles between what he knows is right and his longing for his family.
Often, Harry as a lord may have to deal with the political side of the wizarding world. He might face opposition from the old pure - blood families who don't want a 'half - blood' lord to have so much power. So, there could be a lot of intrigue and power struggles in the story.
In this fanfiction, it's likely that Harry's newfound lordship at age 7 will have a significant impact on his relationship with the Dursleys. They might be even more intimidated by him, or perhaps they try to take advantage of his new status in some way. Harry, on the other hand, could use his new power to free himself from their abuse and start living a more independent life within the wizarding world. He may also discover new magical abilities or artifacts associated with his Potter heritage that help him in his journey.
Well, one possible plot development could be that Harry has to hide his new status as an Obscurial from his friends at Hogwarts for fear of being ostracized or worse. Another could be that Voldemort somehow discovers Harry's new condition and tries to use it to his advantage, perhaps by trying to manipulate the Obscurial power within Harry. Maybe Harry has to learn to control this new, dangerous power on his own as he can't trust Dumbledore or the other teachers with this secret at first.
One idea could be that Harry Potter, as the Master of Death, somehow gets transported to the Ouran High School world. He could use his magical abilities in unique ways there, like using the Invisibility Cloak to play pranks on the Host Club. Maybe he'd also share his experiences with death and resurrection with the Ouran characters, leading to some deep philosophical discussions.
A plot could also revolve around Harry going back in time to the origin of the Master of Death legend. He discovers secrets about how the power was first created and used. Along the way, he meets his ancestors or other powerful wizards from the past. This could change his understanding of his own power and his role in the wizarding world.
Well, perhaps in the fanfiction, the Arcobaleno are intrigued by Harry's status as the Master of Death. They might seek his help to break a curse that is related to death in their world. Harry, in turn, could learn from the Arcobaleno's skills and powers, leading to an exchange of knowledge and a more complex, intertwined plot.
Well, one plot point could be how Harry's role as the Master of Death affects his relationships in the harem. Maybe his newfound power makes him more alluring or feared among the characters in the harem. Another could be the internal power struggles within the harem due to Harry's status.
Well, perhaps one interesting development could be Harry exploring the new powers and responsibilities that come with being a lord. He might use his new status to reform the wizarding world in ways he couldn't before as just a student.
In the fanfiction, it could be that Harry faces opposition from some powerful wizarding families who don't want him as high king. They might try to undermine his rule through various means such as spreading false rumors or plotting against him. Harry would then have to prove himself worthy and strong enough to maintain his position.