A crossover with a high - fantasy world could also be fascinating. Picture the Spirit of Fire crew suddenly finding themselves in a world of magic and mythical creatures. They would have to adapt their combat strategies and technology to deal with magic - using foes and strange new terrains. Maybe they would try to find a way to use their technology to harness the magic for their own purposes.
One idea could be a crossover with the 'Percy Jackson' series. The dragons from 'Wings of Fire' could interact with the demigods. For example, they might have to team up to fight a common enemy that threatens both their worlds. Another idea is a crossover with 'Harry Potter'. The magical world of Hogwarts could be a fascinating place for the dragons to visit. They could learn about different types of magic and perhaps help the students in a battle against dark forces. A third idea could be a crossover with 'The Hunger Games'. Imagine the dragons being part of the arena, changing the whole dynamic of the games.
One idea could be to have Pokemon trainers in the Fire Emblem world. They could use their Pokemon to assist in battles against the typical Fire Emblem foes. For example, a Pikachu could zap enemy soldiers from a distance, adding a new dynamic to the strategic battles of Fire Emblem.
A great plot for a Fire Emblem Echoes crossover fanfiction could be a crossover with the Legend of Zelda. Link and Alm could form an unlikely alliance. Alm's army - building skills and Link's solo combat abilities would make for an interesting dynamic. They could be on a quest to retrieve a powerful artifact that has been split into pieces and scattered across both their worlds. Another plot could be a crossover with a superhero universe. The Fire Emblem Echoes characters gain superpowers in this new world. Celica might gain the power of flight, and Alm could have super strength. They would then have to use these new powers to fight against super - villains who are trying to take over their combined worlds. Or, a crossover with a post - apocalyptic world. The Fire Emblem Echoes characters have to survive in a world full of mutants and scarce resources, using their strategic skills to build a new community.
One idea could be a crossover with another popular RPG like Final Fantasy. Characters from Fire Emblem Fates could find themselves in a world filled with magic crystals and different races from Final Fantasy. They might have to team up with FF characters to fight a common enemy, like a powerful demon that threatens both worlds. Another plot could involve a crossover with a more modern - day setting, such as a post - apocalyptic world. The Fire Emblem Fates characters would have to adapt their combat skills and strategies to this new and harsh environment. They could meet survivors in this world who have different values and beliefs, leading to interesting character interactions.
One idea could be that the characters from RWBY are transported to the world of Fire Emblem. They could join forces with the Fire Emblem characters to fight against a common enemy like a powerful dark dragon. The RWBY characters' unique abilities would add a new dynamic to the battles in the Fire Emblem world.
A great plot for a crossover fanfiction could be a time - travel crossover. Fire Emblem Three Houses characters travel to the future or the past of their own world but with a twist - the world has elements from other universes. So they might encounter mechs in their otherwise medieval - like world. Or they could cross over with a high - school anime setting. The students would be in a normal high - school environment but with their Fire Emblem abilities. This could lead to some really fun and comical situations like using magic in a science class or sword fighting in the schoolyard. Also, a crossover with a post - apocalyptic world would be interesting. They would have to deal with new threats like radiation and mutated creatures while trying to maintain their own values and relationships.
One idea could be a joint emergency situation where a building fire is also a crime scene. Maybe the arsonist is still on the premises and the teams from both Chicago PD and Chicago Fire have to work together. The PD has to search for the suspect among the chaos and the firemen have to put out the fire while also trying not to destroy evidence.
One plot idea could be that the Fire Keeper from Dark Souls is transported to another world in the crossover. There, she has to adapt to new rules and powers. Maybe she meets characters from the other universe who initially mistake her for something else due to her unique appearance and abilities from Dark Souls. Another idea is that she teams up with a character from the crossover world to fight a common enemy that threatens both of their realms. This enemy could be a powerful being that feeds on the essence of different worlds, and their combined knowledge and skills are the only hope to stop it.
A cool plot could involve a crossover with 'Star Wars'. Picture Harry using the Force in addition to his magic while competing in the Triwizard Tournament. Or perhaps a crossover with 'Alice in Wonderland' where the Goblet of Fire sends Harry down the rabbit hole and he has to navigate Wonderland's strange rules during the tournament.
A possible idea for a Fire Emblem Heroes crossover fanfic is to cross it with the Final Fantasy series. The characters from Fire Emblem Heroes could enter the world of Final Fantasy and encounter iconic summons like Ifrit or Shiva. They could also participate in battles against the likes of Sephiroth. Another option is a crossover with the Pokémon world. The Fire Emblem Heroes might befriend Pokémon and use them in battles, or they could be on a quest to stop an evil organization that's misusing Pokémon power.