Zessei Shoujo Defensol (3)

is the third volume of the Zessei Shoujo Defensol light novel series, written by Maki Masato and Illustrated by Kazuyuki Yoshizumi. It was released under the Dengeki Bunko Imprint in July 2006.

Synopsis
"Please, help me!" A cute girl who jumped into the classroom one day pushed Shin down and shouted. Her name is Hyakusei Otome. The girl, who is her border guardian, tells her to search for her missing king, Lex, and her two Amane Seki. Shin and Yuina, along with Chika, Ryuto, and members of the Tenjo Theater Company, headed for the theme park "Ocean's World" where Zhou headed, but there was an enemy trap waiting for them. The battle between the king and the guardian begins in a huge theme park!

(source: Bookwalker JP - Translated)