The consequences of Voldemort's death are far - reaching. Firstly, the wizarding world can finally start to heal. The families who have lost loved ones to Voldemort's tyranny can begin to move on. Hogwarts, which has been a battleground for so long, can return to being a place of learning and growth. The social order that has been disrupted by Voldemort's rise to power is restored. The Ministry of Magic can function properly again without the influence of the Death Eaters. Also, the relationships between different magical creatures and wizards can be rebuilt on a more positive note as the threat of Voldemort no longer looms over them.
In the novel, Voldemort is finally killed by Harry Potter. Harry uses the Elder Wand, which is the most powerful wand, against Voldemort. When Voldemort casts the Killing Curse at Harry, the curse rebounds on him because of the complex magic related to the Elder Wand's allegiance, leading to his death.
I really liked 'In the Shadows of the Dark Lord'. It has a unique take on the relationship between Voldemort and a particular Death Eater. It explores themes of loyalty and ambition in a way that keeps you hooked. The writing style is quite engaging, and it's not afraid to take some creative liberties with the source material.
The power dynamics are often very interesting. Voldemort is such a dominant figure, and seeing how the Death Eaters interact with him, whether out of fear or true loyalty, makes for a great read. For example, in some fanfictions, a Death Eater might try to gain more power within Voldemort's ranks, which leads to all sorts of tense situations.
There would likely be a great deal of anger and a thirst for revenge. Harry has many friends and supporters. They would probably form some sort of resistance against Voldemort, but they would also be mourning Harry's death deeply. Some might even question if there was more they could have done to prevent it. The Ministry of Magic would also be in a state of turmoil, as they had been relying on Harry to end the threat of Voldemort.
Perhaps in the fanfic, Voldemort has found a way to nullify Harry's magic for a short time. Without his magic, Harry is just a normal boy and Voldemort takes this opportunity to beat him to death. It could also be that Voldemort has an unexpected accomplice who helps him corner Harry, leading to Harry's demise.
It could be a follower of the God of Death who misinterprets the God's will and tries to bring chaos to the wizarding world. They might see Harry as an obstacle to their plans and try to eliminate him.
In some fanfictions, Voldemort wins through a change in the prophecy's interpretation. If the prophecy was misread, it could give him an edge he didn't originally have.
If Harry is the Master of Death in the fanfiction, the final battle with Voldemort would be a showdown on a whole new level. Harry would have a deeper understanding of the cycle of life and death. This could mean that he can manipulate the magic related to death in ways that Voldemort can't even comprehend. He could potentially disrupt Voldemort's connection to his Horcruxes, as he has a greater mastery over the essence of death that binds the Horcruxes. Moreover, Harry's power as the Master of Death could give him the ability to resurrect allies who have fallen in the battle against Voldemort, changing the tide of the fight completely.
One plot idea could be that Harry, as the Master of Death, has the ability to see the true nature of Voldemort's Horcruxes more clearly. He uses this knowledge to track them down in a more efficient way. For example, he can sense the presence of a Horcrux in a place where Voldemort has hidden it well, like an ancient, cursed forest. Another idea is that Harry can communicate with the dead in a more profound way as the Master of Death. He could get advice from the founders of Hogwarts on how to defeat Voldemort once and for all.