Fullmetal Alchemist Roy Mustang x OC Fanfiction: What are some interesting plot ideas?

The OC could share a similar past with Roy. For example, if they both had a traumatic experience related to the Ishvalan War. This common ground would create an instant bond as they understand each other's pain and guilt. They could then support each other in dealing with their past traumas while falling in love in the process.

The plot could involve the OC being a alchemist on a quest for a powerful alchemy item. Greed, sensing an opportunity for himself, joins the OC. Along the way, they encounter various enemies and obstacles. For instance, they might have to face off against other homunculi who don't want Greed interfering in their plans. The relationship between Greed and the OC could start off as a simple partnership but evolve into a deep friendship or more as they rely on each other to survive.

One idea could be an OC who is a foreign alchemist with a unique form of alchemy based on their homeland's culture. For example, an alchemist from a desert region who uses sand-based alchemy. Another could be an OC that has a special connection to the Homunculi, not as an enemy but as someone trying to understand and redeem them. Maybe an OC that was experimented on by the same people who created the Homunculi and has some shared traits.

Perhaps there is a mystery involving a powerful alchemical artifact. Edward and Roy both get wind of it and decide to work together to find it. Along the journey, they face various obstacles like other alchemists who also want the artifact. They have to use their combined knowledge and skills to outwit their opponents and solve the mystery behind the artifact. As they progress, their relationship evolves from mere acquaintances to comrades who trust each other deeply. This could involve some character development for both of them, with Edward learning more about discipline from Roy and Roy learning about the importance of following one's heart from Edward.

One idea could be a story where Ed and Al find a way to reverse their alchemical mistakes in a completely unexpected way. Maybe they encounter a long - lost alchemist who has a unique method. Another plot could be them traveling to a parallel universe where their roles are reversed. For example, Al is the one who is more assertive and Ed is more reserved.

One idea could be a crossover where Naruto's chakra system somehow gets intertwined with Alchemy. For example, Naruto could learn to transmute his chakra into different elements in a more alchemical way rather than just using ninjutsu. Another could be that characters from both universes meet in a strange in - between dimension. Maybe Sasuke and Edward Elric could have an intense battle or a deep conversation about their quests for power and revenge. And perhaps Hinata could learn some alchemical self - defense techniques from Winry Rockbell.

Power dynamics also play a role. Mustang is a high - ranking officer and Hawkeye is his subordinate. Fanfictions sometimes play with this dynamic, showing how it affects their relationship, whether it's in a military - related plot or in a more personal, romantic context. There are also stories that explore how they overcome the barriers created by their different ranks to be together.

One idea could be the alchemist using gamer skills to unlock new alchemical formulas faster. For example, they might complete certain quests in a virtual - like world within the fanfiction to gain knowledge of rare alchemical combinations.

One plot idea could be that they discover a way to reverse their alchemical transformations through a series of adventures together as a married couple. They might travel to different parts of their world, facing old enemies who now have new motives against them as a united front. Another idea is that they start a school for alchemy, passing on their knowledge while also dealing with the politics of the alchemy world.

One plot idea could be an OC who is secretly searching for a way to reverse the effects of human transmutation without the use of the Philosopher's Stone. They could be an outcast in the alchemist community because of their unorthodox methods. Another idea is an OC who discovers a hidden alchemical society that has been operating in the shadows, with their own set of rules and secrets that could change the balance of power in the Fullmetal Alchemist world. A third plot idea could be an OC who has the ability to see the souls of those who have been affected by alchemy, and they use this ability to solve mysteries related to past alchemical experiments.