Dragon Party (5) Senka ni Utae-sen Hoshi

is the fifth volume of the Dragon Party light novel series, written by Yuji Nakazato and Illustrated by Daisuke Tsujita. It was released under the Dengeki Bunko Imprint in September 2002.

Synopsis
Two ships, "Kairyu" and "Tiamat", have arrived at the planet Pandora, where all the secrets sleep, even though they are full of wounds. However, "Tenryu" operated by the show who chased after that starts an onslaught against Pandora. On the other hand, in response to the show that disobeyed the order that "Planet Pandora is inviolable", the "enemy" upper body decides to eliminate it, and a large fleet launches from Mars base toward Pandora. The Earth Army, which sensed the movement, plans an invasion operation toward the less defensive "enemy" Mars base. What is the identity of the "enemy"? What is the path that the actors should take? The fifth in the series that reveals various mysteries.

(source: Amazon JP - Translated)