Dead Rock. Thus is called the Academy of Formation of the Great Demons located in the 666th Hells stratum. Yakuto, a polite boy, erased and quite banal, decides one day to participate in a mortal examination to integrate this dreadful establishment. Anyone who obtains his degree in Dead Rock receives as a reward a part of the world of humans to govern, but Yakuto hides a very different goal and he will be ready to do anything to reach it... even to kill. Do you dare push the doors of this evil and bloody magic school imagined by the author of Fairy Tail and Edens Zero?