Phages' creation revolves around the existence, or rather absence, of Star Seeds, ethereal artifacts that exist within sentient beings much in the same way as the Dream Mirrors of Sailor Moon SuperS.

All Star Seeds come from the Galaxy Cauldron ... Galaxia says it will be Sailor Moon's grave. Galaxia sets up her base in the Galaxy Cauldron, Shadow Galactica. She describes it as the Stars ...