Well, perhaps a concept is the power dynamics. If Harry is death in this crossover, he would likely have a great deal of power. In Kuroshitsuji, power is a major theme, especially with Sebastian's demonic powers. Harry's power as death could either clash or complement Sebastian's. This could lead to some really intense and unique storylines where the characters are forced to navigate around these two powerful forces.
In this fanfiction, an interesting concept might be the exploration of different afterlives. Since Harry is related to death, it could delve into what happens to the souls in the Kuroshitsuji world after death. Do they go to a traditional afterlife like in some real - world religions, or is there a unique system in this crossover? It could also show how the characters' actions in life are judged in the context of Harry being death, adding a new layer of depth to their character arcs.
One interesting concept could be a crossover with other Victorian - era related works. It might bring in different characters and storylines from that time period, adding more depth to the Kuroshitsuji universe. For example, a crossover with Sherlock Holmes - like characters could lead to some exciting detective - related plots within the Kuroshitsuji world.
One interesting concept could be how Harry Potter's new role as the master of death changes the power dynamics in the wizarding world. For example, it might make him more feared or respected by other wizards.
A plot could involve Ciel Phantomhive being magically transported to Hogwarts. Since he's used to a world of mystery and intrigue in his own story, he might quickly adapt to the secrets of Hogwarts. He could form an unlikely alliance with Harry Potter and his friends, and together they face a new threat that combines elements from both universes, like a dark wizard who has made a deal with a demon.
Another potential main antagonist could be a force from Harry's world that has followed him into the Kuroshitsuji crossover. This could be some sort of entity that doesn't want Harry interfering with the natural order of the Kuroshitsuji universe. It could be a being that has its own motives for keeping death and the afterlife in a certain state and sees Harry's actions as a threat, and so it actively tries to stop him.
Another idea is a crossover with 'Fullmetal Alchemist'. Ciel could be interested in the alchemy in that world and perhaps try to use it for his own purposes. Sebastian would be there to either help or hinder depending on his own motives.
Another concept could be the alteration of the life - death cycle within the fanfic. In the original Harry Potter series, death has certain rules and prophecies play a role. In a crossover fanfic, new rules might be introduced. For instance, a character from a world where death is more reversible could bring that idea into the Potterverse and cause chaos or new opportunities for the characters we know.
Well, in scp death note crossover fanfiction, a cool concept is the clash of different power systems. The SCP entities have their own unique and often bizarre abilities, and when combined with the Death Note's ability to kill just by writing a name, it creates a really chaotic and interesting scenario. Maybe some SCPs would try to find a way to nullify the Death Note's power or use it to their own advantage in their never - ending pursuit of chaos or control.
Well, in 'kaneki crossover death note fanfiction', a possible concept is the way their different worlds collide. Kaneki comes from a world full of ghouls and the CCG, and Light is in a world where he's using the Death Note to change society. If they were to meet, it could lead to some really intense power struggles. Also, the idea of how their respective allies and enemies would react to the crossover is quite fascinating. Kaneki's friends from Anteiku might be completely bewildered by the Death Note, and Light's accomplices might see Kaneki as a new threat or a potential tool.
One interesting concept is a crossover with other magical universes like Narnia. It could bring characters from both worlds together, creating new adventures. For example, Harry Potter and the Pevensie siblings might team up to fight a common evil that threatens both their magical realms.
Some concepts include crossovers with fairy tale worlds. Picture Harry Potter characters entering the world of Cinderella or Snow White. The magic in Harry Potter could transform the classic fairy tale settings. Another concept is a crossover with steampunk elements. In such fanfiction, you'd see magic integrated with steam - powered machinery and Victorian - era aesthetics. This could lead to the creation of new magical devices and a whole new look at how magic is used in a more industrialized setting. There could also be crossovers with alien races, where the wizards' magic is put to the test against extraterrestrial powers and technologies.