☆Novel Volume 4 will be released around October 22nd! + Audiobook Volume 2 is scheduled for release on October 20th!

（Drama CD + Audiobook Volume 1 currently on sale）

★The manga adaptation will be available on various e-book stores starting October 16th!

＊Novel Volumes 1-3 are currently on sale from Gagaga Books.

The world's strongest Demon Lord, Lucifer, ruled over the demon race with his overwhelming power.

He even built a harem including his beloved wife, and lived a life of just eating, indulging in pleasures, and sleeping for several hundred years.

However, the destructive impulse dormant in the Demon Lord's blood began to ache, craving a formidable opponent.

Despite waiting all this time, why hasn't a hero come to subjugate him? How outrageous!

Thinking this, Lucifer disguised himself as a human and decided to check out the military academy, an institution for training heroes.

The best way to learn about what goes on inside was to enroll. Lucifer easily passed the entrance exam and successfully enrolled, but...!?

This is the story of how the strongest Demon Lord, through some mistake, became the ultimate hero.