Apraxas no Yume

is a Japanese light novel series written by Yasichiro Takahashi, with illustrations by Nagi. The series began publication on June 10, 2004 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Andy and Bogey of the "Division Extermination Company" whose livelihood is to exterminate monsters that nest in different spaces. While chasing a monster called "Phantom" that suddenly appeared and disappeared without sound, the existence of a girl with a red umbrella emerged ...