Redefining “Evil” in Onmyodo: Dynamic Equilibrium

In yin–yang thought — the deep foundation of Eastern philosophy — all phenomena in the universe arise through the ceaseless flux and interaction of two polar forces, yin and yang. What we commonly shun as “evil” or “malevolent energy” is not a fixed enemy to be destroyed. It is simply a state that has, for a time, reached the extreme of yin within the cycle. The true art of Onmyodo lies not in suppressing or sealing away these negative qualities by force, but in understanding their nature, integrating them into the system, and thereby converting stagnant ki back into vital, life-giving yang — the technique of circulation.

This logic of yin–yang circulation was deeply rooted in the practical wisdom passed down in Japanese communities and traditional households before and throughout the Meiji period. This article analyses the folkloric, psychological, and feng shui mechanisms embedded in that wisdom, offering a fundamental response to the “spiritual disturbances” that trouble people today.

“Evil” as Marebito: The Folklore of Inclusion & Transformation

Receiving the Thief and the Evil Spirit as Guests

According to the concept of Marebito proposed by folklorist Shinobu Orikuchi, strangers who crossed boundaries and arrived from outside ancient village communities were at once “ill-omened gods” who might bring disaster and “auspicious gods” who might bring fortune. This dual nature is the essence of “evil,” and reversing it into something auspicious through hospitality was the traditional role of the Japanese household.

Allowing a thief to live in one’s home for six months — letting him play alongside the children — is a process of “domesticating” the negative energy attached to that individual by placing it under the controlled environment of the home. The testimony that “evil spirits and malevolent energy became quiet” in that environment suggests that the resident’s overwhelmingly receptive attitude neutralised and stabilised the unsettled energy brought in from outside.

The Mechanism of Yin–Yang Transformation

The Onmyodo teaching of “endless circulation” is grounded in the law that when things reach an extreme, they inevitably turn into their opposite. Attempting to overpower evil by force generates violent friction, but by “using” its nature and yielding to the flow, it becomes possible to convert negative force into a source of power.

The Alchemy of Bodily Purification: Salt & Sake Misogi

The Synergy of Coarse Salt & Sake: Merging the Physical and the Spiritual

The custom of taking a bath with coarse salt and sake after something unpleasant has occurred is the most powerful form of simple misogi for washing away the fine impurities that cling to the body. Salt has been a symbol of purification since antiquity: as a substance that condenses the life-force of seawater, it carries the power to dissolve clumps of stagnant energy. Sake, meanwhile, serves as the medium connecting gods and humans in Shinto ritual — a “sacred liquid” created through the purifying process of polishing rice.

Exfoliation & the Stripping Away of Bad Fortune

The act of removing all dead skin from head to toe as a means of shedding misfortune carries deep meaning both dermatologically and symbolically. The stratum corneum is the outermost layer of the body — the boundary between the outside world and the self. The dead skin that accumulates there is, literally, “accumulated past.” Removing it signifies a process of shedding one’s old shell and bringing fresh life energy to the surface.

Dynamic Space Management: Entryway Cleaning & Both Sides of the Door

The Entryway: The Tataki as a Filter for Fortune

In feng shui, the entryway is the “inlet of ki” — equivalent to the “brain” or “face” of the home. Bad fortune brought back from outside accumulates first on the entryway floor, together with physical dirt. Wiping the floor with a damp cloth and keeping it spotless is an essential condition for intercepting negative energy at the threshold and accelerating the incoming yang energy.

The habit of polishing the entryway floor to a shine, practised by prosperous households, is nothing other than the physical removal of heavy energy close to the ground, raising the vibrational frequency of the space. A clean floor that reflects light acts as a magnet attracting good fortune.

The Magical and Functional Significance of Wiping Both Sides of the Door

The door is the movable component of the barrier separating the inner world from the outer world. Most people clean the inside of the door but neglect the outside and the edges of the frame. Yet negative energy and the thoughts of others cling precisely to this boundary — the outside face of the door, its edges, and its handle.

Elimination & Danshari: The System for Completing the Cycle

Toilet, Drains & Extractor Fan: The Exit Points of Yin Energy

If the entryway is the inlet, the toilet, drains, and extractor fan are the excretory organs of the home as a living organism. In yin–yang circulation, releasing is as important as — or more important than — taking in. When elimination stagnates, no matter how much good energy is taken in, it decays internally and becomes toxin.

Danshari: Releasing Attachment through the Material

Danshari is not mere tidying. Objects carry the thoughts of their owners, and old or unused objects accumulate the energy of stagnation. Physically removing these unwanted items from the home is preparation for releasing past attachments and creating the space — a vacuum — into which fresh fortune can be drawn.

In Onmyodo there is a law: “A vacuum is always filled.” By creating physical margin through danshari, room is made for new chances, connections, and wealth to flow in.

The True Nature of Spiritual Disturbance & the Mirror Law

Is Spiritual Disturbance Thoughts from Outside or Projection from Within?

The Mirror Law holds that all events that occur in reality and all people we encounter are mirrors reflecting our own inner world. If you sense strong thoughts or malevolent energy from others and this is interfering with daily life, it is possible that unresolved emotions, guilt, and suppressed anger within your own inner world are being reflected back in the form of external people and phenomena.

Awareness of Projection & Self-Purification

When you sense spiritual disturbance, what should first be questioned is not the other person but your own heart’s wavelength. Attempting to deflect the thoughts of others is like raising your fist to a mirror — it can only result in hurting yourself further.

Instead, receiving the supposed sender of negative thoughts as “a being who is teaching you your own immaturity,” and declaring forgiveness in your heart, severs the energetic bond and causes the phenomena called spiritual disturbance to dissolve.

A Practical Guide: Handling Crowds & the Circulating Daily Life

Effective Use of Salt Spray & the Psychological Anchor

A salt spray has the effect of instantly switching your own energy with a single spritz, making you conscious of a temporary boundary between yourself and the outside world. This is the contemporary form of the traditional carrying of salt — a mobile barrier that protects you from misfortune and uncomfortable energy while out.

Building the Vessel of the Meiji Grandmother

Reaching the state of being able to house even evil, as the Meiji grandmother did, requires thorough self-purification and spatial management as prerequisites. The reason she emerged unharmed after housing the thief is that the home was always kept cleansed, and her own energy was so overwhelmingly stable that the thief — a yin presence — was drawn into the circulation of her yang and had his venom neutralised.

Rather than fearing the outside world, the essence of Onmyodo is to cultivate yourself as “a power station that circulates whatever comes and converts it into light.”

Yin–Yang Circulation Is the Highest Defence

The philosophy of “not defeating evil, but utilising its nature” examined throughout this article is a powerful antithesis to the modern defensive way of life. The attitude of fearing evil spirits and trying to eliminate them by scattering salt actually grants those presences a strong reality and reinforces one’s own vulnerability.

Convert the energy spent trying to exclude others into cultivating your own environment — entryway cleaning, salt-sake baths, danshari. Wipe both sides of the door, cleanse the drains, overwrite the list of people you cannot forgive with gratitude. As you raise the vibrational frequency of yourself and your living space in this way, even if malevolent energy drifts around you, it will no longer have the power to harm you — rather, it will transform into a backdrop that makes your vitality stand out all the more.

Transforming from a victim tossed about by external thoughts, to a practitioner of yin and yang who circulates all energy freely — that is the supreme wisdom, both ancient and new, that the Japanese people have inherited.