>>11945483
>>11946150
also in that ending, Millennia gets turned into a Timenoid, which is a human who was given immortality to help keep the human sacrifice machine running for the devil. Timenoids are noted for having blue skin and blood, same as Astarte. This ends up being retroactive lore about her since Timenoids are first brought up in Kagero, not the first Deception. But this would explain why Astarte's main goal is to resurrect Satan and why she's blue