Character transformation is a big characteristic. Since 'lust' is involved, characters may experience changes in their personalities or goals. Some may become more driven by their desires, like a character from FMA being influenced by the concept of 'lust' introduced in the crossover. The settings might also change to accommodate the new elements of 'lust'. For instance, there could be new locations or realms that are related to this concept, and these fanfictions often use detailed descriptions to bring these new elements to life.
Often, these fanfictions blend the dark and complex world of Fullmetal Alchemist with the idea of 'lust' which could be in terms of a character's desires or a new, alluring force in the story. They might also explore different character relationships and how 'lust' can either strengthen or disrupt them.
I've also heard about 'Lust and the Elric Brothers' Crossover'. This fanfiction delves into how Lust's presence could change the dynamics between Edward and Alphonse Elric. It has some exciting action scenes as well as some emotional moments that are really well - written.
Since the 'fma original lust story' is not clearly defined, if it's related to 'Fullmetal Alchemist', one key element might be the character Lust herself. Her alluring appearance is used to deceive and manipulate others in the story.
I'm not sure specifically which 'fma original lust story' you are referring to. 'FMA' could stand for 'Fullmetal Alchemist', but without more context, it's difficult to elaborate. It might be a fan - made or a less - known spin - off related to the main series.
One common theme is identity. Since the homunculi are in a new crossover world, they often question who they are and their place in this new setting. For example, in many crossovers, they might compare themselves to the new characters they meet.
Some fma crossovers involve characters from DC Comics. Picture Batman or Superman in the world of FMA, dealing with the concept of equivalent exchange and the political intrigue in that world. It can lead to some really unique storylines and character interactions.
A lesser - known but very creative fma envy crossover fanfiction is the one that combines the world of FMA with a steampunk - themed universe. Envy has to adapt to the new rules and technology in this world, and the story does an excellent job of showing this transformation.
One idea could be that Naruto characters are somehow transported to the FMA world and have to adapt to the rules of alchemy. For example, Naruto might be intrigued by the concept of equivalent exchange and try to apply his ninja way to it. He could learn alchemy and use his chakra in unique ways to manipulate it.
One common theme could be the clash of different magical systems. In Harry Potter, there's the magic based on spells and potions, while in FMA there's alchemy. Another theme might be the exploration of different cultures and values. The pride aspect could also play into characters showing their unique identities and abilities from both universes.
One plot idea could be that Ichigo somehow gets transported to the FMA world. He might initially be confused by the alchemical rules but then use his Soul Reaper powers in unique ways. For example, his Zanpakuto could be seen as a form of alchemical weapon, and he could fight alongside the Elric brothers against the homunculi. Another idea is that the Philosopher's Stone has some connection to the Hollow within Ichigo, and characters from both universes have to work together to prevent a catastrophic event.
First, know both universes well. For an fma crossover, you need to understand the rules of alchemy in FMA and the characteristics of the other universe you're crossing it with. For example, if it's a Star Wars crossover, know about the Force and lightsabers as well as alchemy.