"They came from deep beneath the ocean. Monsters. The first came ashore at Canterbury. It slaughtered ten million lives before the bombers arrived. Canterbury ceased to exist that day, the day Celestia allowed Solar magic to be used in anger. She swore never again, but another monster came. Another city. Another broken promise. We knew it wouldn't end. We knew we had to do something. So to fight those monsters, we created Monsters of our own.