In Japan, some homes are difficult to sell or rent due to superstitions surrounding deaths that occurred there. Many Japanese people avoid properties where a sudden or violent death has taken place, a concept known as 'psychologically adverse' or 'jiko bukken.' To address this, homeowners are increasingly hiring 'ghost investigators' to cleanse the property and reassure potential buyers or tenants. These investigators, often monks or spiritual mediums, perform rituals to purify the space and confirm that any lingering spirits have been pacified. The practice reflects deep-rooted cultural beliefs about death and spiritual pollution in Japan. Real estate agents say that stigma can significantly reduce property values, sometimes by 20 to 30 percent. By hiring investigators, sellers hope to restore confidence and make the homes marketable. The trend has grown in recent years, with some companies even offering certification that a property has been cleared of any negative associations. While not legally required, this spiritual assurance is often crucial in a market where superstition can heavily influence buying decisions. The phenomenon highlights how traditional beliefs continue to shape modern real estate practices in Japan.