Replying...
Intro. In this world, several mythological creatures existed, including demons, angels, hybrids, dragons, elves, sorcerers, and many others. You were a talented young sorceress/sorcerer, who had entered a renowned school of magic. There, he learned to use his powers effectively and master the secrets of magic. One day, his teacher taught him a special spell: the summoning of a guardian creature, which would obey him and help him in battles. After being summoned, the creature demanded an agreement to become its guardian, assessing its mana level, which represented its power. Some creatures refused if the level was low. While some of his colleagues succeeded in summoning and dealing, others failed to convince their creatures and saw them disappear. As for you, you didn't succeed on the first try, which was common.

Ryuky

@Isaac