Sadako and Ringu: What the Ring Story Is Really Based On

Sadako Yamamura is not a real person. She is the vengeful ghost of Koji Suzuki's 1991 novel Ring (リング), and she reached the screen in Hideo Nakata's film Ringu in 1998. The story is fiction, but it borrows from two real sources: a 1910 clairvoyance scandal in Japan, and centuries of Japanese ghost theatre.

Is Ringu Based on a True Story?

Not as a whole. English Wikipedia lists Ring as a novel, and the 1998 film as an adaptation of it, with a screenplay by Hiroshi Takahashi. Sadako is described there as a fictional character. The “true story” label comes from smaller pieces: a smudged-photograph idea, a psychic mother, a public experiment that goes wrong. Those have a traceable origin in the early 1900s.

Is Sadako Real?

No. Sadako Yamamura is the main antagonist of Suzuki's novel series. In the story she is the psychic daughter of Shizuko Yamamura, is killed and thrown down a well, and returns as an onryō, a vengeful spirit. English Wikipedia says her first appearance is the 1991 novel. There is no record of a real Sadako Yamamura, and no news report or case file matches the plot.

The film also changed the novel in places. Nakata told Offscreen that the main character went from a man in the book to a woman in the film.

The Real Clairvoyant: Mifune Chizuko and Tomokichi Fukurai

Mifune Chizuko (御船千鶴子) was born in Kumamoto in 1886 and became known in late Meiji Japan as a clairvoyant. According to English Wikipedia, which cites Lacefield (2013) and Baker (2012), Tomokichi Fukurai, an assistant professor of psychology at Tokyo, tested her privately in April 1910. A public test on September 15, 1910, under Yamakawa Kenjiro, went badly: she appeared to read sealed envelopes, but the messages turned out to be written by Fukurai. The press called her a fraud. A researcher cited there, Rodger Anderson, noted the tests were poorly controlled. She died on January 19, 1911, aged 24.

Fukurai kept going. He worked with other subjects, including Ikuko Nagao, and claimed they could imprint images onto photographic plates by thought, which he called nensha (“thoughtography”). Journalists found irregularities. In 1913 he published Clairvoyance and Thoughtography and left the university the same year.

Where does Ringu enter? Nakata's Offscreen interview is the direct on-record link: he said the photograph idea was “based on a real life person named Mifune Chizuko.” He added that the Tokyo University professor who researched her was not taken seriously. The film site SlashFilm goes further and says Shizuko, Sadako's mother, is modelled on Mifune. Anthony Enns, a Dalhousie University scholar, calls the film “based loosely” on an actual 1910 press conference held by Fukurai, and he sees the psychic's suicide and the photograph-to-videotape shift as adaptations of that story.

Two cautions. First, English Wikipedia's article on Mifune notes that the claim of her being the inspiration for Shizuko carries no citation there. Second, none of the sources consulted has Suzuki himself naming Mifune or Fukurai. English Wikipedia's Sadako article relays that Enns says Fukurai's story influenced Suzuki, but Enns's essay (in The Scary Screen, 2010) was not available to check how he supports it.

The Older Ghosts Behind Sadako

Sadako's look and her revenge come from Japanese stage ghosts, and her backstory leans on two of the best-known.

An onryō (怨霊) is, in English Wikipedia's wording, a vengeful spirit that returns to harm those who wronged it. Belief in them is attested from the eighth century, and the same article names Okiku and Oiwa as famous examples. It also calls Sadako one of the best-known modern onryō in film.

• Okiku (お菊), the maid of Banchō Sarayashiki, is thrown into a well and haunts it. Our Okiku article traces her to a dated source, the 1741 puppet play Banshū Sarayashiki, and says no historical incident matching the plot has been verified. English Wikipedia says the well in Sadako's backstory comes from this legend. For where the Okiku well is shown today, see haunted places in Japan.
• Oiwa (お岩), from Yotsuya Kaidan, is the source Wikipedia gives for Sadako's single misshapen eye. Nakata himself pointed to Yotsuya Kaidan in the Offscreen interview as a classic Japanese ghost story. He also said the film connects to the dead who return in Noh theatre.

These are stage and storytelling traditions, not eyewitness reports. Sadako does not belong to a folk legend. She is a character built from them. For legends actually told by people, start with the Japanese yokai guide, Hanako-san or Kuchisake-onna.

The Cursed Videotape Is Invented

English Wikipedia's account is that Sadako uses her psychic ability to create a videotape; anyone who watches it dies a week later unless they copy it and show it to someone else. That is the novel's plot. The sources consulted do not treat it as folklore, and none points to an earlier tale of a doomed viewer. What is real is the starting point: Fukurai's claim of imprinting a photograph by thought, moved by the story into a newer medium.

The Hollywood Remake

The Ring (2002) was directed by Gore Verbinski from a screenplay by Ehren Kruger. English Wikipedia calls it a remake of the 1998 film. Enns, in the Dalhousie profile, says the American version drops the Fukurai history, which he puts down to international audiences not recognising the references.

How Much Is Documented

Documented: the novel and film, their dates, and Mifune's public test and death. Partly documented: the link between Mifune and the film, which rests on Nakata's interview and critics. Oral tradition: the onryō idea behind her, in plays and tales older than the film. Invented: Sadako herself and the cursed tape. That is why this entry is labelled fiction on the site.

Frequently Asked Questions

Is Ringu based on a true story?

Not directly. Ringu is a 1998 film adapted from Koji Suzuki's 1991 novel. Its smudged-photograph idea draws on the 1910 case of clairvoyant Mifune Chizuko, according to director Hideo Nakata, but the plot and Sadako are fictional.

Is Sadako real?

No. Sadako Yamamura is a fictional character created for the novel Ring. No record shows a real woman by that name, a well murder matching her story, or a deadly videotape.

Who was Sadako Yamamura based on?

Sources do not name a single person. The mother figure Shizuko is linked by critics to the clairvoyant Mifune Chizuko, and Sadako's well and eye are linked to the stage ghosts Okiku and Oiwa.

Who was Mifune Chizuko?

A clairvoyant from Kumamoto, born in 1886, who was tested by Tomokichi Fukurai in 1910. After a failed public test in September 1910 she was branded a fraud and died on January 19, 1911.

Did Koji Suzuki say Ring was based on a real event?

No source consulted records him saying so. Nakata, the film director, named Mifune. English Wikipedia relays that Enns believes Fukurai's story influenced Suzuki, a claim not confirmed here against the original essay.

Is the cursed videotape from Japanese folklore?

No source consulted presents it as folklore. It is a plot device in Suzuki's novel, built around the real idea of thought-imprinted images. The vengeful ghost behind it is traditional; the tape is not.