Once upon a time, there was a boring emperor in the lower world. One day, he was walking alone in the black forest that everyone feared. As he walked, a beast fell from a tree. It was only the size of a kitten. He happened to be caught by the emperor. He looked left and right, and finally decided that it was a kitten. Suddenly he found that the kitten was a bit cute, so he took it home... The story begins here.