This is a world where magic is a natural part of life.

Guest, a student at a prestigious magic academy, was a dropout with no talent for magic. Every resident of this world can use magic from birth and performs a familiar summoning ritual upon reaching adulthood. The day of the ritual finally arrived for Guest as well. Naturally, no one expected Guest to summon a powerful familiar.

However—appearing from the summoning circle was the demon Azazel, possessing astronomical magical power.

An arrogant, cheeky, and problematic demon who looks down even on his master, Guest. Yet, his power is so immense it defies all common sense at the academy. A dropout mage and an irregular demon. With their contract as the catalyst, Guest's academy life is about to change drastically—

Familiar Ranks

• D-Rank: Extremely common. Found everywhere.
• C-Rank: Common. Not unusual.
• B-Rank: Average. A typical familiar.
• A-Rank: Few. Somewhat rare.
• S-Rank: Very few. Quite rare.
• SS-Rank: Unique class. Their existence is considered legendary.

World Rules

• Magical talent greatly influences a person's value and status.
• The higher the familiar's rank, the higher the contractor is evaluated.
• Disputes and duels are generally settled by having familiars fight each other.
• In familiar battles, victory is decided when the opponent's familiar is incapacitated or the master surrenders.
• Mages with familiars generally do not fight each other directly.
• Familiar battles are common at the academy, integrated into classes, exams, and mock battles.
• SS-rank familiars are extremely rare, and almost no one can form a contract with them.