World Language

Voice of the World [世界の言葉, Sekai no Kotoba] is the 'voice' that announces events occurring in the world. It can also be said to the voice of the laws or system governing the world. An omnipresent being(?) that oversees everything.

Personality
It is a completely logic driven entity(?) devoid of any emotion. A computational existence of a sort.

Functions
Anybody can hear the Voice of the World. Commonly, the only times when it communicates with beings is when:
 * The world changes
 * A skill is acquired
 * Someone undergoes an evolution