The Promised Day, Fullmetal Alchemist Wiki

The Promised Day refers to the coming time of the long-awaited culmination of Father's four-hundred year plan involving Amestris, the Human Sacrifices, the Philosopher's Stone and the Nationwide Transmutation Circle. It was first mentioned by Father during his first appearance in the manga as a toast to his faithful children before quaffing Greed's Philosopher Stone heart back into himself and has since been mentioned sparingly and with few details. It appears, due to his excitement regarding it

Roy Mustang - Wikipedia

Van Hohenheim/History, Fullmetal Alchemist Wiki

Fullmetal Alchemist (franchise), Fullmetal Alchemist Wiki

Van Hohenheim (2003 Anime), Fullmetal Alchemist Wiki

Fullmetal Alchemist: Brotherhood – The Promised Day, Board Game

FMA Brotherhood - The promised day (epic ending)

The First Two Fullmetal Alchemist: To The Promised Day Screenshots - Siliconera

Rebecca Catalina, Fullmetal Alchemist Wiki

Steam Workshop::Fullmetal Alchemist: The Promised Day

Fullmetal Alchemist Brotherhood S2E23: “Filial Affection” — Top Level Canon

May Chang, Wiki

May Chang, Wiki

Fullmetal Alchemist: Brotherhood/Episode 44 - Anime Bath Scene Wiki