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 OC could be an undercover agent sent to spy on Roy Mustang. However, as she gets to know him better, she realizes that he's not the power - hungry military man she was led to believe. Roy, on the other hand, discovers her true identity but instead of turning her in, he tries to convince her to join his side. This back - and - forth dynamic can lead to a very engaging fanfiction with a romantic subplot.
Yes, it is. The manga has a perfect balance of action, drama, and philosophy. The themes explored are profound, and the character growth is very satisfying.
Fullmetal Alchemist does continue in manga form. However, the continuation might not follow the exact same pace or style as the original series. It might introduce new plotlines and character developments.
Sure did. The story reached its conclusion, providing a satisfying end to the fans. The final chapters wrapped up the plotlines and character developments neatly.