六號關口

Cassidy: Darkness and light. Evil and good. War and peace. Them and us. Everyone knows that one could not exist without the other. And between to two, there is a balance. Cassidy: Some say that before the lands disappeared, birds were able to migrate between the continents. They used a wind called uplift. You don't have to flap your wings to stay up. But you also don't fall. You stay in the middle effortlessly, resting in the air. Cassidy: But there are no uplift winds any more, because we ruined the balance.