Well, it could be about a character who has an unusual fascination with death in the Harry Potter universe. Maybe they study dark magic related to death more closely than others. For example, they might be exploring the secrets of the Deathly Hallows in a very different way than what we see in the original books.
The plot could involve a new character who is a 'lover of death' and tries to bring back some of the most feared dark wizards who have died. This character could be using some sort of ancient and forbidden magic that they found in a hidden corner of Hogwarts or in a long - forgotten wizarding family library. They believe that by bringing back these dark wizards, they can learn the ultimate secrets of death and magic.
Perhaps the fanfiction could center around a group of outcast wizards who, instead of fearing death like most in the wizarding world, see it as the ultimate form of magic. They form a sort of cult within the Hogwarts community. They perform strange rituals around the concept of death, which are initially dismissed as just the odd behavior of a few misfits. But as the story progresses, their actions start to have an unexpected and far - reaching impact on the entire wizarding world, including Harry and his friends.
It could be a Slytherin student who has always been drawn to the darker aspects of magic. They might have grown up in a family with a history of dark magic, and this has influenced their view of death as something to be embraced rather than feared.
It might involve the Deathly Hallows taking on new significance in relation to the Endless Death. For example, the Elder Wand could be seen as a tool that even Death from the Endless might be interested in. The Resurrection Stone could have a connection to bringing back those who have passed on in a way that goes beyond the normal magic in Harry Potter, influenced by the nature of Death in the other fictional context.
Well, perhaps Harry could be trained in dark arts skills that are not typically taught at Hogwarts. He might learn to communicate with the dead in a more profound way and gain unique powers to combat Voldemort.
One possible plot could be that Harry discovers Death as his guardian early on. Maybe Death protects him from Voldemort's initial attacks in a more direct way than in the original story. For example, when Voldemort tries to kill Harry as a baby, Death could appear as a shadowy figure and deflect the Killing Curse in a more obvious display of power.
One possible plot for this fanfiction could be that the DC universe is facing an otherworldly threat that has something to do with death and the afterlife. Harry Potter, as the master of death, is drawn into this situation. He has to navigate the complex politics and powers in the DC world while also dealing with his own powers related to death. He might meet characters like Batman, who is initially skeptical of his magic but then comes to respect his abilities as they work together to save both worlds.
One possible plot could be that a beloved hero character, perhaps someone inspired by the original Harry Potter series, sacrifices themselves to save the wizarding world from a new and powerful dark force. This selfless act would be in line with the themes of heroism in the original series.
In a 'Harry Potter Master of Death ROTG fanfiction', the plot could center around the idea that Harry's mastery of death gives him the ability to traverse different realms, including that of ROTG. He could be on a quest to find a way to permanently defeat death in all worlds. Along the way, he meets the characters from ROTG and they form an unlikely alliance. Together, they face challenges that test their abilities and the strength of their newfound friendship.
One possible plot could be that Lady Death is somehow drawn to the wizarding world due to the large amount of magic. She begins to target certain wizards, believing their powerful magic should be extinguished. Harry, being the hero, tries to stop her and in the process discovers a deeper connection between the magic in his world and the concept of death that Lady Death represents.
Well, perhaps the fanfiction could focus on Harry's internal struggle with being the Master of Death. He might feel isolated as no one truly understands the power he holds. So, he embarks on a journey to find others who have had similar experiences in the past. Along the way, he discovers secrets about the founders of Hogwarts and how they were also connected to the concept of the Master of Death in ways not previously known.
In a 'Harry Potter Master of Death Pokemon' fanfiction, Harry could use his status as the Master of Death to access a hidden realm in the Pokemon universe where Pokemon that have passed away exist in a different form. He might learn that there are certain Pokemon that hold the key to restoring balance between life and death in both worlds. With his magical abilities and new - found knowledge of the Pokemon world, he embarks on a journey to find these Pokemon and prevent a cataclysmic event that would disrupt the fabric of both universes.