The Mystery of Human Sacrifice — Legends of Lives Offered to the Gods and Their Traces Across Japan

What Is Human Sacrifice — The Ultimate Offering to the Gods

Human sacrifice (hitomi-gokuu) refers to the religious ritual of offering a human life as a tribute to a deity. The practice is documented across the ancient world — in Mesoamerican Aztec civilization, ancient Celtic societies, Mesopotamia, and many other agricultural cultures — emerging widely as farming took root. In Japan, too, stories of human sacrifice fill mythology, legend, and historical record alike. Researchers have long studied it as the most extreme expression of prayer within Shinto.

Human sacrifice arose in response to grave crises facing communities. When droughts, prolonged rain, floods, epidemics, warfare, or stalled construction projects could not be overcome by ordinary prayer, people offered the most precious thing they possessed — human life itself — to placate divine wrath or to secure exceptional protection. The historian Takatori Masao defined human sacrifice as "the ultimate exchange transaction wagered on a community's survival." By paying an irreplaceable price, the community sought to enter into an absolute contract with the divine.

It is important, however, to note that contemporary scholarship is cautious about whether large-scale, sustained human sacrifice actually occurred in Japan. Direct archaeological evidence is extremely limited, and many of the stories preserved as legend are now understood to incorporate later literary creation and allegorization. Yet the very existence of so many human-sacrifice legends across so many regions reveals how deeply the concept of "the ultimate offering" was etched into the religious consciousness of the Japanese people.

Human Sacrifice in Mythology — Yamata-no-Orochi and Kushinadahime

The most familiar mythological motif of human sacrifice in Japan appears in the Kojiki and Nihon Shoki, in the story of Susanoo slaying the eight-headed serpent Yamata-no-Orochi. Descending into the land of Izumo, Susanoo encountered an old couple, Ashinazuchi and Tenazuchi, weeping by a river. They had once had eight daughters, but each year the serpent had devoured one of them, and now their last daughter, Kushinadahime, was about to meet the same fate.

Susanoo agreed to kill the serpent on the condition that he could marry Kushinadahime. He had eight vats prepared and filled with strong sake. When the serpent's eight heads each drank from a vat and fell into a stupor, Susanoo cut it apart with his ten-grasp sword. From inside its severed tail emerged the sword Kusanagi, which would later become one of the Three Sacred Treasures.

A structural reading of this myth brings the human-sacrifice motif into sharp focus. The Yamata-no-Orochi is widely interpreted as a personification of a flooding river. The annual sacrifice of a daughter represents an offering to a water deity to pacify recurrent floods. The serpent's eight heads, eight tails, and red eyes are read as anthropomorphic depictions of the multiple branches and turbulent rapids of the Hii River, with the myth reflecting the iron-sand mining and flood-control history of the Izumo region. Susanoo's slaying of the serpent thus symbolizes a critical social transition: the development of flood-control technology that made human sacrifice unnecessary.

The Human Pillar of Nagara — A Life That Held Up a Bridge

Human sacrifice in connection with construction is known as hitobashira ("human pillar"). The custom of burying a person alive at a difficult construction site to ensure completion and durability appears in legends throughout Japan, the most famous being the human pillar of Nagara Bridge in Settsu Province (modern Osaka Prefecture).

According to the legend, the bridge across the Yodo River kept being washed away no matter how many times it was rebuilt. A divination eventually decreed that the bridge would only stand if someone was buried as a human pillar. The verdict specified the victim must be "a man whose hakama trouser hem has a patch sewn onto it." By coincidence, this exactly described one Iwa-uji, who had been participating in the divination council itself. Iwa-uji submitted to his own divination's outcome and was buried beneath the bridge, which is said to have stood firm thereafter. Tradition adds a postscript: his daughter, learning the truth of her father's death, was so overcome with grief that she vowed never to speak again — the famous "silent daughter."

This legend contains several elements typical of human-sacrifice traditions. First, the victim is selected by "divine will." Through divination, lots, or specific bodily marks, responsibility for the choice is transferred from human authority to divine command. Second, the victim accepts willingly. The death is portrayed not as coercion but as voluntary devotion, emphasizing the nobility of the offering. Third, the sacrifice is followed by the project's success and tangible benefit to the community.

Similar human-pillar legends are scattered across the country, attached to Fukui Castle, Matsumoto Castle in Nagano, Inuyama Castle in Aichi, and many bridges, dikes, and embankments. The historian Wakamori Taro argued that most of these are not factual records of actual sacrifices but rather symbolic stories memorializing the devotion of those who labored on dangerous construction projects. The widespread use of jichinsai ceremonies, in which rice, salt, or paper effigies are buried in place of a human, is itself evidence of how systematically the practice was transformed into symbol.

The Onbashira Festival and Suwa Faith — Were People Once Offered?

The Onbashira Festival, held once every seven years at Suwa Taisha in Nagano Prefecture, is a spectacular ritual in which enormous fir trees are cut down, slid down steep mountain slopes, and erected at the four corners of each shrine building. With over 1,200 years of history, the festival draws hundreds of thousands of spectators, and the ki-otoshi event — riding the logs down the slopes — is genuinely dangerous, with injuries occurring most years.

Suwa worship preserves traditions suggesting that human sacrifice was once practiced. At the upper shrine of Suwa Taisha, a ritual called Ontosai (also known as the Tori-no-Matsuri) historically involved a young boy who participated as a "messenger of the deity" while a sword was raised over him. The Edo-period scholar Sugae Masumi witnessed this rite during his 1784 visit to Suwa and left a detailed written record that remains a precious ethnographic source. The boy was not actually killed — he was released at the last moment by what was framed as the voice of the Suwa deity — but scholars continue to debate whether the ritual carries the memory of ancient human sacrifice.

The Onbashira festival itself has been interpreted as containing residues of ancient human-pillar belief. The pillar serves as a yorishiro, a vessel for the descent of the deity, and at the same time symbolizes the very center of the community. The notion that erecting such a pillar requires "the most precious of sacrifices" parallels shamanic traditions across Eurasia. Central Asian and Siberian peoples preserve rituals of erecting a "world tree" with offerings buried at its base. The Onbashira festival can be read as a living transmission of this archaic cosmology.

While reviewing materials on Suwa belief at a local museum, I came upon the records of the Ontosai ritual and found myself momentarily speechless. It is not hard to imagine the tension that the staged sword above the boy's head must have produced in spectators. Even when one understands the ritual as "symbolic," thinking about what that symbol points toward — what once stood on the other side of the symbol — left me unable to put the image down even after the museum closed and I walked back out into the late-afternoon air. Ritual is not a thing of the distant past; it is a memory inscribed somewhere in human consciousness, quietly inherited even now.

Symbolization Through Surrogates — Effigies and Animals as Substitutes

A distinguishing feature of Shinto is that the practice of human sacrifice was substituted, very early on, by symbolic surrogates. This process of substitution is referred to as monozane-ka — "transformation into representative substance."

The oldest surrogate is the hitogata, a human-shaped effigy made of paper or wood. From before the Nara period, communities performed rituals in which calamities or impurities were transferred onto these effigies and then floated down rivers or out to sea. The hitogata distributed at shrines today are direct descendants of this ancient substitute ritual. The hitogata-nagashi (effigy floating) performed during the great Oharae purifications of June and December is widely regarded as the symbolic transformation of what may once have been an actual human offering.

Animal surrogates also became common. At the Ontosai of Suwa Taisha, deer heads are now arranged on the altar, and tradition holds that these replaced earlier human offerings. The wild boar and deer offerings performed at various shrines, and the dedication of fish and birds as shinsen (offerings to the gods), all stand on a continuum with the broader history of sacrificial ritual. In his work on "the one-eyed boy," Yanagita Kunio argued that animal sacrifices functioned as devices for preserving the cultural memory of ancient human sacrifice.

Food substitution was equally important. Rice, sake, mochi, and fruits offered as shinsen are based on the principle of giving the most precious harvest to the gods, and they too belong to the broader category of substitutive offering. Some scholars view the Niinamesai harvest festival, in which the emperor offers the new grain to the gods and partakes of it together with them, as the most refined transformation of human sacrifice — replacing the offering of life with the offering of life-sustaining food.

The Arrival of Buddhism and the Transformation of Sacrificial Belief

The sixth-century arrival of Buddhism brought decisive change to ideas surrounding human sacrifice. The Buddhist precept against taking life condemned all forms of killing in religious ritual, and human sacrifice — along with animal offerings — gradually became taboo.

The Yoro Code of the Nara period already contained explicit prohibitions of human sacrifice. In the year 712, Empress Genmei issued an edict banning "evil rituals" performed in various provinces, and these are believed to have included rites resembling human sacrifice. Heian-period Buddhist tale collections such as Nihon Ryoiki repeatedly told stories in which the evil custom of human sacrifice was overcome by buddhas and monks, depicting how Buddhist values gradually displaced the practice in religious legitimacy.

The Konjaku Monogatari preserves a story in which a village had been offering a virgin each year to a mountain deity. A traveling monk substituted a monkey for the human victim and saved the village. As this story illustrates, Buddhism reframed human sacrifice as "ignorant folk superstition" to be overcome. At the same time, on the Shinto side, the doctrine of honji-suijaku — which identified Shinto deities as manifestations of buddhas — gradually reinterpreted the gods as figures of Buddhist compassion, pushing the image of "violent gods who demand human flesh" into the background.

Even so, traces of human sacrifice persisted long afterward in folk traditions and regional festivals. Rituals of "mock death and rebirth" performed in many local festivals, customs in which a particular child or young person is treated as temporarily sacred, and practices in shinto sports such as sumo and yabusame in which participants risk physical danger — all can be read as ceremonies that inherit the distant memory of human sacrifice.

What Human Sacrifice Asks of Us Today

Human sacrifice is not an artifact of a vanished past. It is the most extreme expression of a universal psychological structure: "offering up the most precious thing for the sake of the community." That structure persists today in transformed forms.

The wartime kamikaze attacks, the people who undertake dangerous occupations, the rescue workers who risk their lives at disaster sites — all can be understood as modern transformations of human sacrifice. The cultural anthropologist Victor Turner proposed the concept of "sacrifice that generates communitas," arguing that communities sometimes confirm their unity by ritually or substantively "offering up" their most precious members. Japanese human-sacrifice legends are an exceptionally vivid expression of this universal communal logic.

At the same time, these legends carry out an essential function: they preserve the memory of the individual sacrifice within the community. The names of Iwa-uji of Nagara, of Kushinadahime, of the protagonists of countless local human-pillar traditions are still remembered after more than a millennium, honored at shrines and stone monuments. This is the expression of the community's ethical responsibility to never forget its dead — a structure that runs through modern memorials for those killed in war and for victims of disaster as well.

The extreme ritual of human sacrifice may appear cruel and barbaric on the surface. But woven deep into its fabric is the extremity of devotion to the community's continuity — and the ethic of remembering that devotion forever. The old stone monuments standing in shrine precincts, the small unmarked shrines whose origins no one quite remembers, all speak quietly of what our ancestors sought and what they left behind in exchange for life itself.