E10 – 005 Shiryō

01 · What Is It?

Shiryō means the spirit or soul of a dead person.

That makes it one of the broadest categories in this expedition. A Shiryō is not defined by claws, wings, a particular costume, or one specific way of haunting. The word identifies the condition of the spirit: its human body has died.

Japanese dictionaries explicitly contrast shiryō with ikiryō, the spirit of a living person believed capable of separating from the body and affecting others. The same sources also note that Shiryō could be understood as the resentful dead capable of possession or tatari, supernatural retribution.

But resentment is only one possibility.

Folklore also preserves dead spirits returning to familiar people, appearing near the place of death, or attempting to draw relatives toward the world of the dead.

02 · Historical Record

The term has a long documentary history.

The Nihon Ryōiki, compiled in the early ninth century, contains an early surviving use of 死霊, making this far older than many catalogued Edo-period supernatural beings. The Heike Monogatari also uses the term in contrast with living spirits, showing that the distinction remained recognizable in medieval literature.

Shiryō continued to appear in religious, literary, and popular traditions.

A particularly important early-modern example is Shiryō Gedatsu Monogatari, published in 1690. It tells of the vengeful spirit Kasane possessing a living woman and eventually being released from worldly attachment through religious intervention. The narrative became influential in later theatrical and ghost-story traditions.

By the modern folklore period, stories collected in works such as Tōno Monogatari continued to preserve accounts of dead people returning to interact with the living.

03 · Appearance

Shiryō has no universal appearance.

That follows directly from what the term means. Any dead person could theoretically become a Shiryō, so the spirit may retain some resemblance to the person in life or appear in a more altered ghostly form.

Classical and folkloric material often places greater emphasis on recognition and behaviour than on anatomy. A dead relative may be recognized because they look familiar, speak in a familiar manner, or appear somewhere connected with their former life.

Later visual culture increasingly developed standardized ghost imagery, including pale faces, long hair, white funerary clothing, and indistinct lower bodies. Those conventions became enormously influential, but they should not be treated as the fixed historical anatomy of Shiryō.

For Hyakki, any single human reconstruction is therefore necessarily representative rather than definitive.

The category is the dead person.

The body shown in art is only one possible manifestation.

04 · Behaviour & Encounters

Shiryō traditions cover a wide range of encounters.

Some dead spirits are believed to possess living people, causing suffering or using the possessed person to communicate. The seventeenth-century Kasane tradition is a well-documented example of this pattern.

Others return directly to family members.

In one story preserved in Tōno Monogatari, the spirit of a dead father repeatedly appears to his daughter and attempts to take her away with him.

Other accounts describe spirits lingering near where death occurred or appearing briefly to loved ones around the time of death.

These behaviours are too varied to reduce to one “power set.”

What joins them is the same basic rupture:

the physical person is dead, yet agency, attachment, resentment, or intention appears to continue.

A Shiryō encounter is therefore fundamentally an encounter with unfinished presence.

05 · Belief, Ritual & Meaning

Shiryō belongs to a much wider Japanese history of beliefs surrounding death, memorialization, possession, and relations between the living and the deceased.

Because some dead spirits were feared as resentful or dangerous, religious intervention could focus on pacification, memorial rites, prayer, or release from attachment.

The 1690 Shiryō Gedatsu Monogatari makes this especially explicit. The spirit Kasane possesses a living woman, recounts her suffering, and is eventually brought toward spiritual release through the intervention of Yūten Shōnin.

But not every returning dead spirit is an enemy requiring exorcism.

The broader category also includes the possibility that the deceased remains attached to people or places because relationships have not yet settled.

That makes Shiryō less about a single form of supernatural danger than about one of the oldest questions surrounding death:

At what point does a person truly cease to be present among the living?

06 · Regional & Historical Variations

Shiryō is so broad that variation is unavoidable.

In some traditions, the dead return because of resentment, making the Shiryō overlap with concepts such as onryō. In others, the spirit possesses a living person. Elsewhere it simply appears before relatives or remains around a familiar location.

That does not mean Shiryō and Onryō are identical.

Shiryō primarily identifies the spirit as belonging to someone who has died. Onryō emphasizes resentment and vengeance. A resentful dead spirit may therefore be described using both ideas, but one term does not automatically imply the other.

Later ghost imagery also changed how the dead were visualized. Edo and modern popular culture increasingly created recognizable conventions for the Japanese ghost, even though older Shiryō traditions did not require one standardized appearance.

The safest archival approach is therefore to preserve Shiryō as a category of the dead, rather than turning it into another visually fixed species.

07 · What We Actually Know