The members of Astral fail in their efforts to capture a demonic hound due to the incompetence of their president, Itsuki Iba, and the hound is claimed by Adelicia Lenn Mathers, the head of Goetia. Afterwards, Astral is approached by ShÅko Kunugi, one of Itsuki's classmates from school, for a mission to find her missing grandfather. However, her grandfather, consumed by his magic after committing a magical taboo, attacks Itsuki and Kunugi...