Horizon no Ue ~Yogen no Sho~

This happened a long, long time ago. There was a world covered in thick dark clouds. But people from far-away lands came. They were treated like gods, and rid the world of the dark clouds. The ground overflowed with light, and new life sprouted. Trees. Animals. Fish. Birds. The gods had changed it all. But there were people who instead embraced the darkness. They were sent down, to the centre of the world, to a place called "Est". The rest united for a place called "Kaerum". Over time, the two words grew apart and a name was given to the boundary line... "Horizon..."