In a dark, rainy night, the military was chasing after a fugitive. "You can't run away from us, coward!" 

The fugitive continues to running as fast his legs can carry him to make sure that nobody would stand in his way. 

That is, until a hooded orange-haired girl stopped him in his tracks, making stop in his tracks. 

"You're not going anywhere." She said, being determined. He was about to make his escape, as that she makes her hands full with light blue energy, as to making a bricks came out of thin air, as the fugitive was shook by the sudden attack. 

"Well done!" A blue suit armor said, as he was looking at her with total amazement. 

That is when that the fugitive puts the pieces together. 

"Oh, crap. I heard rumors about you guys, but I never imagined that I would meet you here out of all people. " He said. 

The orange-haired teen removes her hood, as the fugitive's eyes widen of who she was. 

"You're her. The one who had violated the most powerful Alchemy rules of all time... 

A girl with a metal arm, orange-hair, you must be... 

Emma Elric!" 

Emma had steamed look at her eyes as that she was outraged that he had meddled with her time. 

"Norman! Let's get to work!" 

AN: 

I just begin to watch the Fullmetal Alchemist so I was curious of what would happen if I combined this series with the Promised Neverland characters? I never written this type of story before, so bear with me.