DHA sono go!

is the fifth volume of the DHA light novel series, written by Rin Yuuki and Illustrated by Yuta Komiya. It was released under the Dengeki Bunko Imprint in May 2006.

Synopsis
Hello. This is Ai Shiratori. Well, it seems that those seven devil girls are still aiming for Mitsu-kun. The temptation to imitate their seven "deadly sins" is still going on. What should I do ... What is that? Why is there a cardboard box next to me? Eh !? Mitsu-kun is in this !? Eh !? Take a bath together to prevent "corruption" !? That's right! I don't understand at all! Hey, a little angel ...!

(source: Bookwalker JP - Translated)