When Aya, a terminally ill girl, was about to come to the end of her life, she unexpectedly met Milo, the guardian from among the stars. Milo reveals a catastrophe that is about to come to the world, and Aya is chosen to be the only witch who can prevent this disaster. Under the guidance of Milo, Ling's consciousness was brought into a fantasy that heralded the destruction of the world. She witnessed how the Devourer, a creature formed from the distorted energy in the mirror world, invaded the real world through the mysterious mirror, bringing plagues, wars and natural disasters. In order to save the world, Aya must sign a contract with Milo, become a witch with special powers, and embark on a journey with her to restore the balance of the mirror world and prevent the invasion of the Devourer.
Concept: Girls grow up during travel