Astral, sometimes known as Astral Flow, is a substance in the world of Seikoku no Dragonar.
All living things within this world require Astral, which is drawn from the Earth. Most produce it naturally, but long ago, for unknown reasons, those races with powerful magic lost their ability to produce it. Because of this, the races needed to find means of gaining it for themselves. For elves, they interbred with humans, diminishing their magic, but restoring their ability to produce Astral, becoming the Elbaff. Dragons, on the other hand, bound themselves to humans in order to draw on their natural Astral. Some Dragons, however, wish to end this connection, and instead use humans as prey to provide them with Astral.