"Kur' kul" is a very powerful swordsman in the past. It was even said that his strength was equivalent to 1000 warriors. He was very famous and respected, which unfortunately made his heart arrogant. Because of his arrogance, he wants more power, so he goes on an adventure to find a powerful sword belonging to the Devil in the past. When he found the sword, and tried to use it, his body was cursed and made him turn into a skull. He became a weak immortal being. Until now, he traveled the world and said that he was The Great Kur'kul to everyone he met.