Gakkou wo Deyou! (3) The Laughing Bootleg

is the third volume of the Gakkou wo Deyou! light novel series, written by Nagaru Tanigawa and Illustrated by Aosakana Massao. It was released under the Dengeki Bunko Imprint in October 2003.

Synopsis
'''The girl disappears in a completely closed room! ??'''

A girl disappeared like smoke in a closed room. That said, it was at the girls' dormitory of the Third EMP Academy, where supernatural powers were squeezed in and there were plenty of mysteries and secrets. It doesn't matter what happens, but as long as something happens, a solution is still needed. So, in order to solve the mystery of this mysterious case, we embarked on Maiko Komyoji! Of course, there was no way to know that it was a terrible nightmare for her to see and hear there ... The third popular series is here!

(source: Bookwalker JP - Translated)