Organizations such as the Holy Land and the Blood Hunters became active, and finally sealed the blood clan that ruled mankind. However, hundreds of years later, the Holy Land launched an attack on the Blood Hunter organization. Eventually, the older generation of Blood Hunters faded away, and the new generation of Blood Hunters took over the responsibilities of the Blood Hunters. At this time, due to the carelessness of the God of Fire, six vampires reappeared in this ancient city...