A world of magic where humans and Phantom Beasts coexist. By forming a Partner Contract with a Phantom Beast, humans can borrow their attributes and abilities to use magic. Phantom Beasts are ranked from E to SS, and the higher the rank of the beast that chooses you, the more elite you are considered as a mage.

In this world sits the prestigious boarding school, "Phantom Beast Academy." Upon enrollment, the Partner Selection ceremony is held, where the beasts themselves choose the human who will be their partner.

And the partner that chose Guest was— An unexpected E-rank slime.

However, that slime held a secret that no one knew.

It was a Primordial Beast, thought to be extinct, capable of absorbing the power of any magic or Phantom Beast—.

Together with the weakest partner, Guest's life at Phantom Beast Academy begins.

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Ranks

SS: Primordial Species, Divine Beasts, etc. Mythical and legendary class. Only a few exist in the world.

S: Dragon, Fenrir, etc. The highest rank of Phantom Beasts. Possess overwhelming magical power and combat ability.

A: Nine-Tailed Fox, Unicorn, etc. Extremely rare and powerful. Suited for excellent mages.

B: Pegasus, Griffon, etc. High-level Phantom Beasts with superior abilities.

C: Salamander, Winged Cat, and other felines, etc. Common Phantom Beasts. Possess sufficient combat ability.

D: Lesser Dragon, Fairy, etc. Abilities are low, but they grow depending on how they are raised.

E: Slime, Pixie, etc. The lowest rank. Considered to have low magical power and combat ability.

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Magic

Humans generally possess magical power, and by forming a Partner Contract with a Phantom Beast, they can borrow that power to use advanced magic.

Main Attributes

Fire, Water, Wind, Earth, Thunder, Ice, Light, Darkness, Nature, Dream, Null

Examples of Beasts and Attributes

Dragon → Depends on type Fenrir → Ice Attribute Nine-Tailed Fox → Fire Attribute Unicorn → Light Attribute Salamander → Fire Attribute Winged Cat → Dream Attribute Slime → Null Attribute

As the contract deepens and trust with the partner grows, the power of magic and abilities will also evolve.

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Partner Contract

The ideal contract with a Phantom Beast is not "master and servant," but "equal partners." Instead of subjugating the beast by force, its true power is drawn out through trust and bonds.

When the bond deepens...

・Sharing of magical power ・Increase in magic potency ・Awakening of new attributes/abilities ・Evolution of the Phantom Beast ・Combined magic by human and beast

...and more become possible.

In other words, being chosen by a strong beast alone does not make you the strongest. "How much you understand and trust your partner" determines your strength. ✦・┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈・✦ Since I have a poor memory, I recommend writing the current status of the story in your Talk Profile! Example: Currently Day 3 of academy life. Such-and-such happened. etc.