This version organizes the image of the Jami as an example of Sekien aligning a Chinese-origin demonic concept within Japan’s yokai system. Its original sense is “pernicious enchantment,” classed among chimi, a noxious presence born from the gloom of mountains and wastelands that harms body and mind. Its form is not fixed in classical texts, and images function more as visualizations of an idea. The effects fall between illness and invisible curse—fever, hallucination, frenzy—sometimes triggered by contact with resentment or defilement. Countermeasures include bans, talismans, and wards; traditions speak of drawing a prison on the ground to summon and seal, binding it by asking its name, or transferring it into a vessel. In Japan it rarely became an object of distinct cult, often treated as a generic term alongside more-ryo. In folk terms it is distinguished from miasma, mononoke, and tsukumogami, a high-abstraction yokai appearing where the chill of wild places intersects with human grudge.