Over half a month had already passed since General Gilgen had led the army of the Skycourt Kingdom into the province of Burmen. Even though they had conquered all of the citadels on the Marrod Plain on the northeastern side of the Effer Kingdom, they hadn't been able to make any progress ever since they arrived at Illingburn Fort. Illingburn Fort was guarded by Prince Lazaar in person, so it was always bound to be a tough nut to crack. What frustrated General Gilgen even more was the terrain around Illingburn Fort. The fort was framed by mountains both in the north and in the south. The mountains to the north of the fort stretched all the way northward to connect with the Terarody Mountain Ranges, while the mountain range in the south extended all the way to the Joffan Sea. Illingburn Fort stood right in the space between these two mountain ranges, standing firmly in the path of the advancing Skycourt Kingdom army like an insurmountable hurdle. Because of this, Illingburn Fort also had another name: the city between mountains.

It was impossible for the army to march over the steep mountains of the north or the south, so the only way for the Skycourt Kingdom's troops to advance was to break through Illingburn Fort. In the face of the seemingly insurmountable Illingburn Fort, the vastly experienced General Gilgen was...