"Magic"—it is crucial for people to live an abundant life—a handy miracle.
However, witches are the only ones who can cast magic,
and they must not be seen by ordinary people when casting.
That is the rule of this world.
Yet, Coco, a young girl living in a small village helping her mother with daily chores,
has always dreamed of becoming a witch since childhood.

One day, when a young witch named Qifery visits the village,
Coco secretly watches him using magic and uncovers a great secret.

It was the "absolute secret" that the witches kept from the world,
that anyone could use magic if they draw a Casting Seal with special tools. Born as an Outsider,
Coco becomes Qifery's apprentice and begins studying magic.
As she learns and grows together with her fellow apprentices in the atelier,
she gradually steps into the secretive world of witches.