Well, it depends on how it's done. If the fanfiction writer is skilled, they could create an amazing story. They could use the concept of Necromorphs to introduce a new kind of dark magic in the Harry Potter world. For example, imagine if Voldemort got his hands on Necromorph - creating magic. However, it could also go wrong if not done carefully. The two universes have different fan bases and expectations, so some fans of either might not like the combination.
The combination of Naruto and necromorphs is unique because it merges two very different genres. Naruto is about ninjas, friendship, and a coming - of - age story in a feudal - like world. Necromorphs, on the other hand, are from a horror genre, all about grotesque body horror and survival. When you put them together in fanfiction, it creates a whole new kind of story that can be both exciting and unexpected.
One way is to focus on the common elements. Both universes have elements of the unknown and the dangerous. In Harry Potter, there are dark wizards and dangerous creatures. With Necromorphs, it's all about the horror of the undead. By highlighting these similarities, the fanfiction can draw in both sets of fans. For example, a story could be about a joint mission between Hogwarts students and some survivors from a Necromorph - infested world to fight a common enemy that combines dark magic and Necromorph - like powers.
The themes blend by pitting the light - hearted and somewhat familiar magic of Harry Potter against the mind - bending, incomprehensible horror of Cthulhu. For instance, the concept of good vs. evil in Harry Potter takes on a new dimension when faced with the amorality of Cthulhu - like beings. The wizards' sense of order and their magical laws are challenged when these chaotic and eldritch forces enter their world.
Well, in some fanfics, the honor code of the Yautja might blend with the Gryffindor's sense of bravery. A Yautja might respect a Gryffindor who shows great courage in the face of danger, just as they respect worthy opponents in their own culture.
The worlds might blend through the use of shared magical elements. For instance, both have magical creatures. The gargoyles' ability to turn to stone during the day and come alive at night could be related to some form of Transfiguration magic in the Harry Potter world.
In these fanfictions, they blend by sharing certain characteristics. For example, the loyalty and camaraderie among the characters in both universes are emphasized. In Harry Potter, it's the loyalty among the students of Hogwarts and the Order of Phoenix. In Kancolle, it's the bond between the shipgirls. This common trait can be a basis for the two universes to interact, like the shipgirls and the wizards/witches working together based on mutual trust.
In 'Harry Potter Incubus Yaoi' fanfiction, it often blends by inserting the concept of incubus (a type of demon) into the Harry Potter universe. The yaoi aspect might come in through male - male relationships. For example, an incubus character could be introduced into Hogwarts and form a relationship with a male character from the original series, thus combining the magical world of Harry Potter with the otherworldly and often sexualized nature of incubus and the male - male relationship dynamic of yaoi.
In fanfiction, the magic in Harry Potter can be combined with Sith powers. Imagine a Pureblood wizard who, through some dark magic experiment or ancient family secret, gains the ability to use Sith - like force powers. This could lead to a whole new set of adventures and challenges as they navigate the wizarding world with these new powers while trying to keep them a secret from those who would not understand or would try to stop them.
In the fanfiction, Fenrir could be a part of an ancient prophecy that involves both the Harry Potter world and Loki's domain. Harry Potter, as the chosen one in his world, is destined to face Fenrir. But Loki has his own plans regarding the prophecy. He tries to manipulate the situation so that he can control the outcome. This would create a complex web of power struggles and alliances.
In a fanfiction, the storylines could merge around the theme of education. Both Hogwarts and Gakuen Alice are schools that teach magic in different ways. A new teacher could be introduced who has knowledge of both magic systems. This teacher could start a special curriculum that combines the teachings of both schools. The students would then have to learn about each other's magic, and this could lead to all sorts of adventures and challenges as they try to master the new combined knowledge.