Hustoria, is the nation forged by the legendary wielder of Holy Magic, known as the "Founding Saintess" who saved humans from demons. After five hundred years, the nation developed and changed, where humans oppressed demons. Maya, the current saintess, the reincarnated "Founding Saintess" thinks she had enough with the rotten country. "Yes. I need to crash humans." In order to do so, Maya decides to visit the Demon Queen and team up with her. However, the Demon Queen, who possesses greatest power of all demons, was a coward crybaby. "Think about the poor humans." That was what the Demon Queen said to her. Can the fearless Saintess and the kind Demon Queen be good buddy and destroy the Human world!?