Writers blend the two universes by incorporating elements of the Naruto power system into the Until Dawn setting. For example, they might introduce chakra into the Until Dawn world. They also blend the characters' personalities. A Naruto character's determination can be combined with an Until Dawn character's survival instincts.
Writers often start with a what - if scenario. What if Naruto was born in the Mass Effect universe? How would his life be different? They use this as a starting point to blend the storylines. They also consider the political aspects of both universes. The complex politics in Mass Effect like the council races and the ninja village politics in Naruto. By making characters interact with these political systems, they merge the two universes' storylines.
Writers often blend the two universes by creating a common threat. For example, a demon that has ties to both the Supernatural world and the DC universe's magic or technology. They also use character crossovers, like having Dean Winchester meet Clark Kent. This allows for an exchange of ideas and values between the two different worlds.
To blend the Ghostbusters and Avengers universes in fanfiction, a possible approach is through a shared backstory. Perhaps there was an ancient event that led to the existence of both super - heroes and ghosts. This could be a starting point for a story where the two groups discover this connection. In terms of plot, the Ghostbusters could be called in to help the Avengers deal with a ghostly manifestation of an old enemy. The Avengers, in turn, could offer their protection and resources to the Ghostbusters when they face a threat that is too powerful for their usual means. It would also be cool to see how characters like Captain America and Peter Venkman would interact, given their different leadership styles.
Writers blend the two universes by combining the magic systems. In Game of Thrones, we have magic like the wildfire and the warging ability. In Warcraft, there's arcane magic, druidic magic etc. A fanfic might have a character who can use both the warging ability from Game of Thrones and druidic magic from Warcraft, creating a really unique power combination. They also use the geography. Maybe a fanfic has a portal opening between the Seven Kingdoms and Azeroth, and then characters from both sides start exploring the other world. This allows for a lot of interesting interactions and conflicts.
The characters from both universes interact in various ways. The harem aspect comes in as Naruto's charm and unique abilities attract characters from SAO. The fanfic might also blend the cultures of the two worlds. For instance, Naruto's respect for his comrades from the ninja world could influence how he forms relationships in the SAO harem. There could be training arcs where Naruto teaches the SAO characters some ninja techniques, or vice versa, the SAO characters introduce Naruto to new virtual world strategies. This creates a rich blend of the two universes.
Writers often blend the two universes' aesthetics by incorporating the dark and gritty atmosphere of 'Darker than Black' into the more superhero - centric 'Worm' world. For example, they might describe the cityscapes in 'Worm' with the same sense of foreboding and mystery as in 'Darker than Black'.
One way is by creating crossover characters. For example, a character could have the powers of a Jedi from Star Wars and also be a part of the Avengers team. Another way is to use similar story elements like a fight against a powerful and evil force. Writers can also have the heroes from both universes meet in a neutral location, like a new planet or dimension, and team up to face a common threat.
In many fanfics, the settings are combined. You could see the Hidden Leaf Village in the middle of Hyrule, or vice versa. The cultures also mix. The honor - based system of the ninja in Naruto could be applied to the characters in Zelda, or the magic system of Zelda could be introduced to the Naruto world. This creates a whole new and exciting world for the readers. It's really interesting to see how the different power dynamics, social structures, and technologies from both universes interact and change in these fanfics.
Some writers use the concept of shared threats to bring the two universes together. In a harem fanfic, this means that both Naruto and Resident Evil characters have to face a common enemy. This enemy could be a powerful being that combines the abilities of the T - virus from Resident Evil and the power of the tailed beasts from Naruto. As they fight together, the relationships in the harem develop, with characters learning from each other's strengths and weaknesses.
In these fanfictions, the universes blend by sharing elements of their lore. The Witchblade has its own backstory and rules, and so does the Naruto universe. Writers might combine these elements, like the Witchblade having a connection to an ancient and powerful ninja clan in Naruto's world. Or perhaps the tailed beasts in Naruto could have some sort of relationship with the power of the Witchblade. This creates a rich tapestry of ideas where the two universes can co - exist and interact in unique ways.