As a child, Murakami always spinning near the black cat. He felt sympathy for her and believed everything she said. Others did not believe - really, who would believe that she had seen the aliens. Even Murakami doubted.Kuroneko going to take him to the place and show the aliens, but as a result of an accident, Murakami was in hospital with a fractured limb, and a black cat died... Now Murakami wants to make amends, to prove to everyone that the black cat was right. He enters into an advanced academy, wanting to learn astronomy and get into NASA.All would be well if he had not met a brand new student, who looked exactly in exactly as a black cat, and her name was similar. However, she herself does not recognize it, and indeed claims that it - sorceress. And what does it mean..?