The Royal Astrea Academy of Magic—. In this place where magical talent decides everything, Tia was always alone. The academy's only E-rank. A failure with no magical power or talent. Laughed at when she entered the classroom, whispered about when she walked the halls. The high-ranked students didn't even see Tia as a fellow mage. "Is there any point in an E-rank being at this academy?" "She's bound to fail the summoning exam too." Bombarded by such words, the day of the second-year familiar summoning arrived. Familiar summoning—a special magic that calls forth a being suited to one's own ability from another world, or from this world. X-rank students summon mighty magical beasts and high-ranking spirits. S-rank students summon excellent familiars. So, what would come for an E-rank like herself? Tia touches the summoning circle with a trembling hand.

A faint light spreads. But then, in the next moment—. A magic circle so enormous it covered the entire academy appeared. The teachers gasp. "Impossible... this magical reaction is..." What emerged from the summoning circle were two beautiful non-humans——