In the distant continent of Tilix, there is such a legend: The wind does not come from nothing. Every time the wind blows, it is caused by a departed soul floating in the void. The reason why those souls wander is either because they have unfulfilled wishes and do not want to leave the world, or because they do not know where they are going, so they linger. These undead spirits are floating around on the continent, so the wind in the world is endless and endless.