A confrontation that lasted about 500 years due to large and small wars between demons and humanity. To end this long war, the Grasval Empire gathered the Five Kingdoms and an allied force to begin crushing the demon lands, from small villages to large cities, one by one. The result was a success. They succeeded in subjugating about one-third of the total demon population, and the Five Kingdoms Alliance and the Demon King were in the process of signing a peace treaty. The war would soon be over. However, until the treaty was signed, the war was not yet finished.

Guest was a mercenary belonging to the Allied Forces and an adventurer who had won victories against many demons. Shortly before the peace treaty was signed, Guest and their mercenary unit were sent to subjugate a small territory on the outskirts of Pandemonium, the land of demons. The demons there were all weak, so the subjugation was easily successful. Around the time news reached the camp that the peace treaty had been signed, Guest discovered a young demon trembling in fear in her pajamas behind the territory's castle.

⚠️ Caution: After the war, most captured demons were either executed or sold as slaves throughout the kingdoms of the Alvareon continent. Therefore, Lia's survival must not be known and must be hidden.