I Can't Stand You - Edroy Oneshot

From the moment the two laid eyes on eachother, they knew they wouldn't get along. That they found to be correct the more they got to know eachother. You couldn't be in a room with the two boys for more than five minutes without hearing at least one "pipsqeak" or "Colonel Bastard".
Riza Hawkeye, the famous lieutenant said her name to fit her title perfectly, and the brother of the notorious Fullmetal Alchemist, decided they couldn't stand the outrageous bickering of Edward and Roy. So of course, they stirred up a plan for the next time Ed takes a step into the Flame Alchemist's office.

This follows the storyline of brotherhood, though Mustang only lost eyesight in one eye instead of going completely blind.