Perhaps in the fanfiction, Roy has to deal with Edward's unique abilities or traumas. For example, if Edward has some special powers, Roy has to help him control and use them properly. And if Edward has past traumas, Roy becomes a source of emotional support, guiding him through the process of healing.
Another plot could be centered around Roy and Edward facing challenges together. They might have to fight against some common enemies or overcome some obstacles in their environment. This could strengthen their bond as Roy acts as a protector and mentor to Edward.
One possible plot could be Roy teaching Edward about the ways of the world outside of his previous experiences. Maybe he shows him how to interact in a more social setting, like introducing him to new friends or taking him to different events in their community.
One possible plot development could be Roy guiding Edward in his alchemical studies in a more father - like way. Since Roy is highly skilled in alchemy, he could teach Edward new techniques and help him better understand the principles. Another aspect could be Edward adjusting to a new family - like structure with Roy. He might struggle at first, being used to relying only on himself and Alphonse. There could also be a focus on how their relationship affects the world around them, for example, in their interactions with the military and other alchemists.
One interesting scenario could be Roy Mustang teaching Edward Elric more about military politics. Since Mustang is well - versed in that area and Edward, being young and brilliant, could learn a great deal. Another could be Mustang helping Edward deal with the emotional aftermath of his alchemy - related traumas. Edward might open up to Mustang in a father - son type of relationship and start to heal.
It could be a character who is jealous of the relationship between Roy and Edward. Maybe someone who wanted to adopt Edward themselves or has a grudge against Roy for taking Edward in.
At first, Edward might be a bit resistant to Roy's attempts at adoption. But as time goes on, Roy shows his care and concern for Edward. He helps Edward with his problems, like dealing with the homunculi or his own self - doubt. Edward then starts to rely on Roy more, and their relationship deepens into a strong bond of family - like love.
One popular Roy and Edward fanfiction might be those that explore their relationship in different AU (alternate universe) settings. For example, in a modern AU, they could be college students dealing with normal life problems while also having their unique bond. Another type could be adventure - themed, where they go on a quest together, relying on each other's skills, like Roy's alchemy knowledge and Edward's combat abilities.
Their relationship changes the story's dynamic by adding a new layer of support. Edward no longer has to face challenges alone. Roy's resources and influence can now be at Edward's disposal. For example, when dealing with the military's bureaucracy or facing enemies, they have each other's backs.
One of the most frequent themes in 'edward and roy fanfiction' is the power struggle. Given their positions in the military, they often have different ideas about how power should be used. Also, trust is a big theme. It takes time for them to trust each other fully, and fanfictions love to play with this aspect. Additionally, the theme of sacrifice can be found, where one might sacrifice something for the other's well - being or for the greater good.
Edward could be an ordinary man living in a small town. He has always wanted a family of his own but couldn't find the right partner. So, he decides to adopt a child to start his own family unit.
One common theme is power dynamics. Given Roy's high - ranking position and Edward's unique abilities, fanfictions often explore how these factors play into their relationship, especially in more intimate situations. Another theme is the exploration of their emotional connection. It's not just about the physical aspect but also how they understand and care for each other on a deeper level.
Another theme is the power struggle. Given their different positions and abilities in the alchemy world, they often have to navigate who has more power or influence in their relationship. This can lead to some really intense and interesting scenarios.