Okay wait yeah, inspiration just struck me. I think I have a theory going here.
Now, it’s not outright 100% confirmed as of now, but it’s reaaaally obvious that the Homunculi are living, breathing Philosopher’s Stones. Greed and Envy have those telltale red sparks when they regenerate or shapeshift, and we saw Greed get melted down to a red liquid that was identical looking to Marcoh’s prototype he showed off to Edward way back when.
So if the Homunculi are made of Philosopher’s Stones, and the Stones are made of human souls…
And if all of Xerxes fell overnight, and one “survivor” walked out…
Hohenheim is made of Xerxes. The whole ancient race sacrificed at once. To make what I can only assume is Pride.
I must wonder why and how this happened to Xerxes. I must also wonder how Lust, Gluttony, Envy, Greed, Wrath, and Sloth were created.
But I think I should prioritize worrying what Hohenheim is currently plotting under Amestris. We already know the Ishval Genocide was closely related to Hohenheim’s plot, as Wrath ordered it to happen. And then Envy started the Liore riots (which we didn’t really see any conclusion of, mind).
And then… Edward, Alphonse, Izumi, and Mustang are “important sacrifices…”
MY HEAD IS SWIMMING. I HAVE ALL THESE PUZZLE PIECES AND NONE FIT TOGETHER, MAN.