The Witch Hunter System

Vaan, a seemingly ordinary protagonist, transmigrates into a world of witches and demons after a fatal accident. This world has been under siege by demons since the Gehenna Realm's descent 300 years prior. In response, mana appeared, giving rise to witches who now rule the seven witch kingdoms, serving as the primary defense against demonic incursions. In this matriarchal society, Vaan, like other magic-less men, must find a way to survive by serving the witches. A crucial discovery reveals that intimacy between men and women enhances witches' mana absorption, while men, in turn, gain improved physique and lifespan. This led to the establishment of red-light districts where dual cultivation became commonplace and love, casual. Vaan, initially a skilled 'prodigy' in this system, enjoyed two years of relative ease. However, his life takes a drastic turn when he is attacked, and his patron, Lady Eniwse, loses control. This near-death experience triggers the awakening of the Witch Hunter System, setting Vaan on a path to confront the world and ultimately become its lord of witches.