Filtwiz is a world where humans and demons fight fiercely. However, in recent years, a terrible A third power, the Erosion, threatens the world itself. Second Demon General Gravedigger, the de facto leader of the demons, takes the situation seriously. The “Grave Digger’s Bodyguard”, which is called the strongest elite unit of the demons,Decided to dispatch to the “strange labyrinth” where countless eroders occur. The main character Luel, who is the last seat of the Gravedigger Guard,Seeing this as a good opportunity for one corner of Chitose to rise up,He sets out to conquer the labyrinth with his servant Fram, but…? The banquet of evil girls begins now, set in a vast strange labyrinth!