A/B Extreme

is a Japanese light novel series written by Yashichiro Takahashi, with illustrations by Eiji Kaneda. The series began publication on April 10, 2002 by ASCII Media Works under their Dengeki Bunko publishing imprint.

The series won an Honorable Mention in the 8th Dengeki Novel Prize.

Synopsis
A / B = Andy and Bogey of the Division Extermination Company are extermination shops whose livelihood is to exterminate the mysterious monster Gremlin that nests in the -a space that develops within the dimension. One day, they are asked by the Star System Development Corporation to exterminate the gremlin that occurred on the huge resource mining ship  and rescue two important people. A / B rushes into  with other extermination shops, but there is an unexpected situation of spaceship Jack ... !!