Twelfth Floor Mystery

The protagonist and her family moved to a picturesque resort city to live. Upon the invitation of their friendly female neighbor, they joined a “big family” composed entirely of people from outside the city. Although the members of this big family were not related by blood, their bond was stronger than that of family, and their relationships were harmonious, giving the protagonist’s family a sense of warmth and belonging. However, the good times didn’t last. After some time, the protagonist learned that the gathering place where they often held their parties was actually a mu*der house. Two years ago, a bizarre homicide had occurred in that house. The female neighbor had been organizing gat...