That's not how it is back home. Back home, they are trying to reclaim Earth because they inhabited it before humans did. The Ice Age came and froze them over until recently.

_{[ No wonder Shealtiel thinks every demon is vile. If they're just ruthlessly doing evil things on Earth, that makes sense. At least Akira's have some kind of reason for causing havoc. ]}

Still. Those demons are merciless, and if they are going to be killing humans, I'm going to be killing them.