Ri Ei and Tanioka family household register

The family-register records linking Rié and the Taniguchi family are more than paperwork: they make X’s assumed identity as Daisuké Taniguchi legally legible, place Rié inside a marriage she believed to be genuine, and later provide the route by which that marriage is erased. Their changing entries show how public records can authorize a life and then revise its official past, even when the human experiences attached to that past cannot be undone.

What the Records Establish

When Rié first contacts Kido, her husband has died and the man she knew as Daisuké Taniguchi has been revealed to be someone else. The complication is that Daisuké is not a fictional identity. A real person with that name exists in the Taniguchi family records, and his brother, Kyoichi Taniguchi, has recognized from a photograph that the dead husband was not his brother.

The records nevertheless appear to tell a consistent story about X as Daisuké. Government officials accept the marriage notification and later the death notification; X has a driver’s license and health insurance card, makes pension contributions, and gives an account of a childhood in Gunma that contains no apparent discrepancy. The documentary identity is corroborated across ordinary dealings with public institutions, even as the family’s direct evidence—the photograph and Kyoichi’s recognition—contradicts it. The records therefore do not merely repeat a private lie: they have been accepted as an account of who X is.

Marriage, Error, and Revision

When Kido meets Rié in Miyazaki, he proposes sorting out the connection between her register and the Taniguchi family records. If X was not Daisuké, Rié had no reason to continue using the married name. She agrees, although the name still carries feeling for her because it belonged to the husband she mourns; after meeting Kyoichi, however, continuing to use it has also made her feel as if she were introducing herself under a stranger’s name.

Kido petitions the Miyazaki Family Court for two linked corrections. First, he seeks to reverse the record of Daisuké’s death, so that the real Daisuké will again appear alive in the official records and the police will no longer be left with a missing-person report for someone legally listed as dead. Second, he seeks to remove Daisuké’s name from Rié’s register and restore her maiden name, Takemoto. The intended result is annulment of the marriage on the basis of error and the complete removal of Rié’s second marriage from her family record.

That correction carries a consequence beyond Rié’s own legal status: Hana, the child she had with X, becomes legally illegitimate. Because the case is unusually complicated, the court asks Rié to appear in person and requests DNA evidence that X was not Daisuké. Kido gathers samples from X’s belongings, including hair from his clothes, nail clippings, his electric razor, and his toothbrush. The records’ apparent certainty is thus challenged through both legal procedure and physical evidence.

The Corrected Official Past

Kido warns that the court’s ruling could take from two months to a year. In the end, both petitions are approved five months later, around the first week of August. The DNA test establishes that X was not Daisuké Taniguchi, and the second marriage is removed from Rié’s records. In the revised official account, she is no longer a widow and has been married only once.

But an amended register cannot make the life that preceded it disappear. Rié understands that the error was not only bureaucratic: she believed she had married a man she had never met, announced that marriage to others, and reported the death of a person whose life and whereabouts she did not know. After the ruling, she feels a bewildering sadness and loses a concrete sense of whose life she is living. The record can restore her maiden name and correct her legal history, but it cannot supply a stable name for the man she loved or erase the years they shared.

Records, Recognition, and Exclusion

The registers’ power becomes clearer when Kido considers people who have no family-register entry at all. A child born within three hundred days of a divorce can legally be treated as the former husband’s child; in some circumstances, a woman and her new partner may refrain from registering the birth. The resulting child can remain outside official records despite meeting the conditions for Japanese citizenship. In the aftermath of the tsunami, that absence means the state may not know such people were alive and consequently cannot count their deaths. For them, official documentation can fail to acknowledge both arrival in the world and departure from it.

Nakakita traces the register’s longer history: it began in the late sixth century under the Ritsuryo system, initially serving policing and tax collection, and expanded in the Edo period to include religious affiliation and information such as birth, marriage, adoption, address, occupation, and death. Because the system depended on attachment to land, freedom of movement in the Meiji period made that older arrangement obsolete; modern registers were then used for conscription and taxation, purposes that also encouraged people to abandon or falsify their records. Across these changes, the register has been an instrument of administration as well as a boundary between those the state can recognize and those it overlooks.

Kido and Nakakita note that residence certificates now do much of the government’s identity management, and that linking taxes and social security through the My Number system may eventually make family registers redundant. Kido adds that integrated systems could also make identity trading easier, while biometrics could render identity management difficult to evade. The records at the center of Rié’s case thus belong to a wider tension: documentation can expose a false identity and restore a legal status, but its omissions can also leave people uncounted. It records lives without being identical to them.