Succubus General's Troop Augmentation Center / サキュバス将軍の兵力増産所

In this game you take on the role of the protagonist, Einike, a demon, and exterminate the indigenous population.
However, it is not Einike who fights, but the countless children she gives birth to!
In a kennel called "Ketos," where male demons congregate, you will flatter them, mate and impregnate them, give birth to offspring again and again, and head off to the battlefield. Then you return to Ketos and give birth to even stronger offspring.