Succubus in Wonderland

Based on the erotic doujin game created by Muni Koubou, this OVA follows a young boy who accidentally falls down a well and is transported to an entirely unfamiliar world. Upon his arrival, he discovers a massive castle inhabited exclusively by alluring succubi, leaving him stranded in a strange and overwhelming realm far from anything he has ever known. In his hour of desperate need, a mysterious girl named Louise suddenly appears before him. By borrowing her unique power, the boy begins his journey with the singular hope of finding a way back to his own home. However, navigating this bizarre new world proves to be far more complicated than he initially anticipated, and unforeseen challenges quickly arise that threaten to derail his plans for escape.