If you're referring to a specific work, such as a manga, anime, or light novel titled "Succubus Senki," it would be helpful to have more details to provide a more accurate response. However, I can offer some general insights:
(translated as "Succubus War Chronicles") is a tactical top-down RPG and adult eroge focused on managing, summoning, and battling demonic entities. The game has gained a niche following for its deep mechanics involving resource management and character progression, often requiring players to balance the development of their demonic allies with the survival of the protagonist. Gameplay Mechanics and Strategy Succubus Senki