[ private but semi easy to get into ]
I noticed, Envy. He's younger than he's supposed to be. If he's from another reality, then perhaps a different you did kill Fullmetal there.
I want to know more about this. Knowledge of this boy's world could be of great use. I'll find out what I can from him.
[Maybe these alternate realities where things are different could come in handy to Father. Or even himself.]