The most powerful Demon King in history, Anos, known for his tyrannical rule 2,000 years ago, has been reincarnated. Entrance exams are being held at the Demon King Academy where they train his descendants to be his successor and become Demon Kings. The entrance exam is a practical test where students must duel each other. Bored of the war-torn world of 2,000 years ago, the Demon King of Tyranny, Anos, appears on the scene.

"One last thing, I'm glad I got to meet you." Without being able to understand Sasha's true intent behind these final words, much time has passed, and Ivis, one of the Seven Elder Demon Emperors, holds a special class at the Demon King Academy called the Great Magic Training. The Seven Elder Demon Emperors are seven demons that Anos, the founding ancestor, created from his own blood. Emilia implores Anos to act respectfully to Ivis, but without hesitation, he speaks to Ivis in a condescending tone.