Kurohime: Shikkoku no Yakata  

Black Princess: Mansion of the Fetters, Black Widow, 흑희 - 질곡의 관-, 黒姫 -桎梏の館-, The Black Princess

During a camping excursion, things take an unexpected turn when the explorers come across a peculiar mansion hidden deep within the forest. Initially, there's excitement as they begin to explore this mysterious place. However, that quickly turns into fear as people start disappearing one by one. It becomes apparent too late that they are caught in the grasp of an enigmatic woman who holds them captive in her remote mansion. Who is this woman and can the campers manage to break free from her clutches?