From long ago angels and demons have been waging war against one another. As both sides continue to shed blood the demons have had the overwhelming dominance in the war however in secret the angels had created the ultimate anti-demon weapon the "Fate Awakening Crystal", its power even having the ability to turn someone into a god. It was after a certain incident in which a human named Kamikaze Shin dies by being pierced through the heart that the "Fate Awakening Crystal" had been transplanted into him and from here his life entangled in the war between angels and demons. With the meeting of the dedicated angel Jupiel and the demon scientist Ariael his normal everyday life has changed now that he has become a god and thus leading to the "ultimate choice"……with the main story aside Shin, Jupiel and Ariael were suddenly told to have a vacation and so return back to the human world! and this where the everyday life of three comical side begins.

The Netherworld, a world spoiled by spite, cruelty, blood-soaked taboos, and boundless riffraff. They say that dark dwellers run rampant, causing horrifying disasters in these lands. In the center of this Netherworld lies a school that endlessly continues to expand its grounds – Nether Institute, Evil Academy. With the Overlord as dean and greater demons for teachers, demon students who follow their baser instincts are labeled as honor students at this school of torment. Mao, the Overlord's son, in order to defeat his father, decided to have the power of a hero. Involving the delinquent Raspberry and her sidekicks together with the 'hero' Almaz, another chaos started in the darkness of the Netherworld!