Some concepts in Soul Eater crossover fanfiction involve mashing it up with different genres. A steampunk crossover would be interesting. Picture the Soul Eater characters in a world full of gears, steam - powered machines and Victorian - like settings. Their weapons could get some steampunk - style upgrades. Another concept could be a crossover with a post - apocalyptic world. The Soul Eater characters would have to survive in a desolate world, and their quest for souls could take on a whole new meaning in such a harsh environment.
One interesting concept could be a crossover with another popular anime like Naruto. Imagine Soul Eater characters in the ninja world, with their unique weapons and abilities. Another concept might be a crossover with a fantasy series like Lord of the Rings, where the Soul Eater characters have to face the dark forces in Middle - earth. And a crossover with a superhero universe could also be exciting, seeing how they would interact with superheroes and villains.
One interesting concept could be the exploration of the unique powers that the black blood bestows. For example, how it might enhance a character's combat abilities in unexpected ways. Another could be the origin of the black blood, whether it has a connection to some ancient and dark magic. Also, the relationship between characters who are affected by the black blood and those who are not can lead to complex and engaging storylines.
Another interesting concept is a fusion of Ichigo's Soul Reaper powers with the weapon - meister system in Soul Eater. Ichigo could form a bond with one of the Soul Eater weapons, like Soul Evans. Their combined powers would create a new and powerful form of combat that has never been seen before in either world.
Well, a cool concept could be the exchange of powers. Maybe Weiss could learn some of Soul Eater's magic - based combat styles and incorporate them into her Glyphs. And for Soul Eater characters, they could gain some knowledge about Dust from the RWBY world. Also, a plot where the two worlds start to merge slowly due to some mysterious force, forcing the characters to adapt and find a way to separate the worlds again.
One idea could be that Naruto characters are transported to the Soul Eater world. Naruto's determination could be a great asset in the battle against Kishin Eggs. He might use his shadow clones to surround and overpower the enemies. Another plot could involve the weapons from Soul Eater trying to learn Naruto's ninjutsu. For example, Soul could be interested in the Rasengan and try to incorporate it into his fighting style. Also, Maka's strong sense of justice would blend well with the Naruto characters' values, and they could team up to take on powerful foes together.
Maybe Mifune's code of honor clashes with the more chaotic and rule - bending nature of some of the Soul Eater characters. For example, he might not approve of how Black Star is so eager for glory and fame without following proper protocol. This could lead to interesting character development and story arcs for both sides.
Another plot could involve a character from Soul Eater accidentally getting a Hollow - like power and the characters from Bleach having to help them control it. This would be a great way to explore the different power systems in both universes. Soul Eater characters could learn about the inner world of the Zanpakuto from the Bleach side, and in return, the Bleach characters could gain insights into the complex relationships between meisters and their weapons.
Perhaps in this crossover, Asura's power is somehow transferred to one of the weapons in the Soul Eater world. This weapon then becomes an uncontrollable force, and the meister has to find a way to either contain or purge the Asura - like power within it. It could also cause a rift between the meister and their friends as they struggle to deal with this new, dangerous situation.
In God Eater fanfiction, a cool concept could be time - travel. Imagine a God Eater going back in time to prevent the initial outbreak of the Aragami. This would change the entire course of the God Eater universe. Another concept is the exploration of different God Eater organizations. There might be fanfictions that create rival or allied organizations with their own unique cultures and combat styles. Also, some fanfictions might play with the idea of a God Eater losing their powers and having to adapt and survive in a world full of Aragami without their usual abilities.
One idea could be that the Fairy Tail mages are sent to the world of Soul Eater on a mission. They could team up with the students from the DWMA to fight a common enemy, like a powerful dark mage who has somehow made a pact with a Kishin. The Fairy Tail members' magic could interact in unexpected ways with the Soul Eater weapons and Meister abilities. For example, Natsu's fire magic might enhance the power of a fire - based weapon in Soul Eater.
One idea could be that the characters from Fairy Tail and Soul Eater end up in a shared world where they have to team up to defeat a new, powerful dark force. For example, Natsu from Fairy Tail and Maka from Soul Eater could form an unlikely duo, with Natsu's fire power and Maka's scythe - wielding skills combining in unique ways during battles.