The devil who bed as a boy enters the hero training institution!
Lucifer is the strongest demon king in the world who dominates the demons with his overwhelming power. The angel and the female hero who had come to subdue me were made a wife, and it continued the life only of eating, eating, and sleeping in harem with them. And, the destructive impulse which sleeps in the blood of the devil starts to tingle in search of a strong enemy one day when 500 years have passed since the hero came at the end. Even though I waited so long, why doesn't the hero come to subdue himself? Then, Lucifer changes into a man boy, and it is decided to go to see the state of the military school which is a hero training organization with Lena who is a former hero and is now my wife as a guide.
"Herberia Empire Mildiana's Direct Military School" produces excellent military men and heroes.
Lucifer changed his name to Theodor and easily passed the entrance examination for this school. Moreover, Theodor attracts attention at once to the feat of taking the president in three subjects of swordsman, body art, and magic that no one has been able to do for 500 years.
In this way, Lucifer, who succeeded in sneaking into the brave training organization, immediately began to explore the state of the school in search of the strong enemy of the future.