Prologue ~ Explanation
Alchemy: The science dealing with objective manipulation, on the molecular level. It involves 3 parts. Identification, Deconstruction & Reconstruction. Alphonse & Edward Elric have discovered a way of doing those steps out of order.
After The Day of Promise, the actions the Elric brothers made more than atoned for the taboo sin of attempting human transmutation. Therefore the being that is/is beyond The Gate was in debt to the Elrics & Hoenheim.
Post P-Day, the realm of Homuncululi has been vastly diminished, mainly because of the epic amount of the supply of Human Soul energy (Philosopher's Stone) that was used for the form father took. Also, because Father, Wrath, Envy, Sloth, Lust & Pride were destroyed, Amestris has become much safer without them.
Mustang's crew was the clear leader of the successful rebellion that overthrew the Bradley administration. Virtually everyone thought that Mustang would be the new Fürher Of Amestris and in a way he was but, not through the same way of government as before. Other than Mustang: Hawkeye, Havoc, Breda and both Armstrong twins are in seats of power. Edward was deemed too young, (this angered him immensely) but he still was widely regarded as a saving grace in the eyes of the country so it's pretty likely he could be high up at some point.
I am writing this as I go. There will be war, love, marriage, death, children, and long hard times ahead for the characters in here.
(All of this ^ will play out through the plot-line early on, so this is just some useful info.)
All that being said - This all begins basically right before everyone sort of, comes back to life during The Promised Day. Just forget about the ending that was really in Brotherhood/the manga. this is fan fiction...
I promise as an author, I will do my absolute best to listen to critique and improve where I fail, but creative control is ultimately mine.
*The stage is set, my story begins*