A long time ago there was only a single empire that existed on the continent. The country experienced tranquility and peace and did not know the conflating deadly diseases that spread around the world. Innocent people suffered as those who were slain by these beasts or choked to death by disease later rose again as undead. The undead caused chaos and destruction in their wake in seemingly endless numbers. Their tireless existence appeared as if this problem was not going to go away. Eventually, the single empire collapsed and became three separate kingdoms, all fighting for their own survival.