The Alvios Kingdom and the Lutetia Empire are under invasion from the Galiard Empire.

However, both nations possess ultimate combatants capable of repelling the invading forces.

The Alvios Kingdom boasts "Cloud, the White Sword Saint," a peerless dual-wielder.

And the Lutetia Empire features "Eclipse, the Black Great Sage," who commands ancient, profound magic.

These two, who have repelled the Empire's invasions countless times and are regarded as devils by the Empire, harbored a certain secret.

That secret was that both were, in fact, the same person.

And then.

Their true identity was Roy Luvel, the second son of a frontier noble from a small country.

While Roy Luvel works tirelessly day and night behind the scenes to protect both nations, his efforts have made him a regular at his academy for tardiness, absences, and poor grades.

He earned the nickname, "The Failing Noble."

If possible, he longed to quit the academy and pass on his roles as the Sword Saint and Great Sage to successors.

Despite Roy's desires, things never go as he wishes.

He can't quite quit the academy, his devoted younger sister trusts him implicitly, a cool beauty aspiring to be the Sword Saint's successor constantly tails him, and a lively girl aiming for the Great Sage title dotes on him.

And so, today, Roy Luvel continues his restless daily life.

【Book Release Decided】

This work is a significantly revised version of

"Regarding the matter of me, the so-called Failing Noble, being the true identity of the Sword Saint and Great Sage

～I guess I'm a guardian god because I have no choice, but I want someone to take over soon, my behind-the-scenes academy life～,"

adapted for its book release.