Edward's eyes. That is the first thing that comes to Roy Mustang's mind when he thinks of the Fullmetal Alchemist. Those molten gold eyes that burn with the fire of a sinner's determination to obtain absolution. He thinks that perhaps that is what attracted him to the youth in the first place. Those tawny eyes that blazed with flames of purpose. It made sense; he was the Flame Alchemist, after all. He had a natural ability with fire, and Edward's eyes burned hot enough to scorch. But, unlike the fire Roy conjured with his ignition gloves, the inferno in Edward's eyes couldn't be tamed or controlled. It was wild, out of control, uncultivated, and fed on his sins. It fed on his unrelenting, unending guilt. But sometimes, on very rare occasions, the flames reduced to a smolder and showed a hint of coolness, and serenity. It was these moments that Edward's soul shown through. And it was beautiful.
Yes, Roy reflected as Edward tramped into his office, ready for an argument, that was probably what had attracted him originally. The fire in his eyes.
-Fin-
