I've been looking for this fic for a while now but i can't seem to find it. It's a RoyxEd fic. where Ed has returned from beyond the gate to defeat somebody. I think his name starts with an 'A'.
Some other things i remember:
- ed was an assassin
- his assassin name was something like the "crimson phantom"
- his teachers (from germany) follows him beyond the gate then tries to kill roy because ed has become soft
- ed gets some sort of sickness from the gate because of the bad guy he's chasing.