A GALAXY UNDER SIEGE. Yuki Tsubaki and the Pantheon Colossi are about to stumble upon one of the universe's greatest horrors. It's laid waste to solar systems, devoured civilizations, and it's waging a devastating war with the Pantheon's deadliest adversaries. Enemies all around, Yuki must choose a side for the sake of survival, and decide whether she can remain who she is in an unforgiving universe.