Kakuriyo is a Japanese term that translates to "hidden world" or "spiritual realm." It often refers to a mystical dimension where spirits, gods, and supernatural beings exist alongside the human world. In Japanese folklore, this realm is believed to be accessible through specific locations, such as ancient shrines or sacred mountains. In popular culture, Kakuriyo has been depicted in various forms of media, including anime and manga. One notable example is the series Kakuriyo: Bed & Breakfast for Spirits, which follows a young woman who enters this hidden world to manage a traditional inn for spirits and otherworldly beings.