In a world, where after death, people become stars, a star fall on earth to grant a wish.

In a vast world, Emma, a girl with something lurking inside her, meets the magician Shion!!! What is the "Magico" ritual that will bind them together?! Even if they risk their lives to tread a path of thorns...!!

Mari Kurusu has had a crush on Kuro Rouzen (the weird guy in her class) for quite a while and when he eats her love letter she thinks it means rejection. Later she finds out his secret, that he is part of a top-secret organization that protects the humans of Earth and he brings her back to the organization to erase her memories. But for some reason, the organization choose's not to erase her memory...