DHA Herisshiyu!

is the eighth volume of the DHA light novel series, written by Rin Yuuki and Illustrated by Marika Tanimura. It was released under the Dengeki Bunko Imprint in May 2007.

Synopsis
As usual, the light that is sometimes boldly and sometimes delicately tempted by the devil girls who imitate the seven deadly sins. A childhood friend, Ai Shiratori, who dressed as a maid, came to him !? A light confused by the avant-garde waitperson of her classmate girl. The purpose of her love is to make a cool deal with her husband !? But the devil girls can't be silently watching that ...!

(source: Bookwalker JP - Translated)