Ikiryō

, also known as , , or , is a disembodied spirit or ghost in Japanese popular belief and fiction that leaves the body of a living person and subsequently haunts other people or places, sometimes across great distances. The term(s) are used in contrast to , which refers to the spirit of those who are already deceased.

Summary

The popular belief that the human spirit (or soul) can escape from the body has been around since early times, with eyewitness accounts and experiences (hauntings, possessions, out-of-body experience) reported in anecdotal and fictional writings. of the living are said to inflict upon the subject or subjects of their vengeance by means of transforming into their form. It is believed that if a sufficient grudge is held, all or part of the perpetrator's soul leaves the body, appearing in front of the victim to harm or curse them, a concept not so dissimilar from the evil eye. The has even made its way into Buddhist scriptures, where they are described as "living spirits" who, if angered, might bring about curses, even just before their death. Possession is another means by which the Ikiryō are commonly believed to be capable of inflicting harm, the possessed person thought to be unaware of this process. However, according to mythology, the does not necessarily act out of spite or vengefulness, and stories are told of the who bears no grudge, or poses no real threat. In recorded examples, the spirit sometimes takes possession of another person's body for motives other than vengeance, such as love and infatuation (for example the Matsutōya ghost below). A person's may also leave the body (often very shortly before death) to manifest its presence around loved ones, friends and/or acquaintances.

Classical literature

In classical literature, ''The Tale of Genji'' (ca. 1000) describes the "well known" episode of the (the more archaic term for ) that emerged from Genji's lover Lady Rokujo, and tormented Genji's pregnant wife Aoi no Ue, resulting in her death after childbirth. This spirit is also portrayed in , the Noh play adaptation of the same story. After her death, Lady Rokujo became an and went on to torment those who would later become Genji's consorts, Murasaki no Ue and .

In the Heian period, a human soul leaving a body and drifting away is described by the old verb meaning "departure". In ''The Tale of Genji'', the mentally troubled Kashiwagi fears that his soul may be found wandering (), and requests that last rites are performed on his body to stop his soul from escaping if this should happen.Another example of this term occurs in the verse by the poet Izumi Shikibu which depicts the author's soul as a wandering firefly: "While I am rapt in thought, / The fireflies of the marsh would seem to be / My soul, caught up and wandering / Forth out of me." (, Tale 20).

contains the tale "How the Spirit of Omi Province Came and Killed a Man of the Capital". In the tale, a commoner encounters a noblewoman and guides her to the house of a certain in the capital. Little did the guide know that he was guiding the of a woman to her neglecting husband. Upon reaching the house the lady vanishes, though the gates remain shut. Wailing noises are heard inside the house. The following morning, the guide learns that the master of the house had complained the of his former wife was present and causing him illness, shortly after which he died. The guide later seeks out the lady's house in Ōmi Province. There a woman speaks to him through blinds, acknowledging the man's services that day, and showers him with gifts of silk cloth.

The can also possess the object of its infatuation, who is neither rival nor enemy. The ,The tale is recorded in the essay collection, . a tale allegedly based on events that occurred during Kyōhō 14 or 15 (1729–1730), a Kyoto merchant named had a teenaged son named Matsunosuke possessed by the spirit of two women who loved him, and who tormented the boy's conscience. On occasion, he would be suspended in mid-air, engaging in conversation as if the girls were present before his eyes, the 's words being spoken through the boy's lips. Finally the family sought help from a renowned priest named Zōkai., 1682–1733 The priest successfully exorcised the boy and cured his condition, but rumors had already spread regarding the incident.

The horror story ( ) collection , published Kanbun 3, or 1663, includes a tale of a woman whose assumed the shape of her severed head.cf. the monster known as . One night, a man traveling towards Kyoto arrives at place called Sawaya in Kita-no-shō, Echizen Province (now Fukui City), where he mistakedly thinks he saw a chicken fly from the base of a nearby stone tower on to the road. The imagined chicken turns out to be (or has transformed into) a lively severed head of a woman. When the face grins at him, he attacks with a sword, and chases it to a home in the capital of the province. Inside the house, the housewife awakes from a nightmare being chased by a man brandishing a blade. The wandering head was, according to the title, the woman's , or her wayward thoughts and obsessions. The woman later turns Buddhist nun to repent for her sins.Original source story title is

Folk legends

Regional near-death spirits

Sightings of belonging to those whose deaths are imminent have been recorded from all over Japan. Stories abound of spirits that materialize (or otherwise manifest their presence) to someone dear to them, such as immediate family. The recipient of the visit experiencing a metaphysical foreshadowing of this person's death, before any tangible news of bereavement arrives.

Many of the local terms for the were collected by Kunio Yanagita and his school of folklorists.While terms such as , , , or are used in the Ishikawa Prefecture in isolated cases, these terms are not frequently used elsewhere.

In the tradition of the Nishitsugaru District, Aomori Prefecture, the souls of the person/s on the brink of death are called , and believed to depart from the body and walk around, sometimes making noises like that of the door sliding open.

According to Yanagita, is the equivalent term to the Senboku District, Akita region. Yanagita defines this as the ability of certain persons to traverse the world in their form. Such individuals are purported to have voluntary control of this ability, in contrast to those who are only temporarily capable of tapping into such a state as a precursor to their death.

In the Kazuno District in Akita Prefecture, a soul that pays visit to acquaintances is called an , and assumes the form of a living human, that is to say, it has feet and make pitter-patter noises, unlike the stereotypical Japanese ghost that have no legs or feet.

Yanagita in reported that in the Tōno Region, Iwate Prefecture, "the thoughts of the dead or the living coalesce into a walking shape, and appear to the human eye as an illusion is termed an in this region." An example being a beautiful girl aged 16 or 17, critically ill with a case of , i.e., typhoid fever or a similar disease. She was seen wandering around the construction site of the Kōganji temple rebuild project in , the days before her death.

In Kashima District, Ishikawa on the Noto Peninsula, a folklorist recorded belief in the , said to appear two or three days before someone's death, which was seen passing through on its visits to (the family temple, also called ). The temple was believed to be the soul's final resting grounds, where one finds a place amongst their ancestors.

Soul flames

There are cases where the wandering appear as a floating "soul flame", known in Japan as the or .A , the Japanese equivalent to the will-o'-the-wisp (or generically "atmospheric ghost lights") However, a "soul flame" from a person who is near death is not considered unusual, with the traditional conception among Japanese being that the soul escapes the body within a short phase (several days) either before or after death. Therefore, pre-death soul flames may not be treated as cases of in works on the subject of ghosts, but filed under chapters on the phenomenon. describes cases of floating balloon-like objects of yellow color (iridescence">iridescent