[2026 Latest] Top 3 Ranking of Paranormal Rumors in Tokyo Metropolitan Parks

Paranormal rumors surrounding Tokyo Metropolitan Parks include not only sightings of voices and spirits, but also various claims about accidents, incidents, and even the origins of the facilities. This article examines Toyama Park, Mizumoto Park, and Koganei Park, comparing the actual information posted by external sources of rumors with the current information provided by the Tokyo Metropolitan Parks Association. The existence and usage information of the parks can be confirmed, but the occurrence of paranormal phenomena or incidents is not necessarily substantiated.

Survey methods and evaluation criteria

The investigation was conducted on September 28, 2026. For each location, the individual pages of the National Haunted Map and the individual park pages of the Tokyo Metropolitan Parks Association were directly verified as official/administrative documents, and the atomic claims written in the rumors were divided. The judgment was made in five categories: agreement (independent documents support the core claim), partial agreement (support and unconfirmed facts coexist), disagreement (independent documents show facts that contradict the claim), immeasurable (insufficient records that can be directly compared), and new facts (meaningful official information not found in the rumors was confirmed). Regular location and opening information alone was not used to support the paranormal phenomena, and new facts were not included in this study. The ranking and scores are not based on how scary it is, but on the quality of the documents, based on source transparency (30 points), historical/spatial context (25 points), safety information (20 points), freshness of information (15 points), and source transparency of the rumor (10 points).

1st Place: Toyama Park | Unmeasurable (85 points)

The rumored details

The page for Toyama Park in Tokyo on the National Haunted Parks website lists three paranormal phenomena: the appearance of a male ghost, the hearing of voices, and the possibility of taking paranormal photographs. Furthermore, the text lists stories of hearing crying and groaning sounds if you go up the artificial hill called Hakoneyama late at night, seeing will-o'-the-wisps in the park, the ghost of a man who committed suicide appearing in the park's toilets, and the possibility of taking paranormal photographs with a camera. Here, we treat all of these as rumors published on the page and not as confirmed facts.

Source of the rumor and date of verification

The source of the rumor is the individual page for "Tokyo Metropolitan Toyama Park" on the external website "National Haunted Map," and the confirmation date is 2026-09-28. The page displays the update date 2026/09/23, the classification as Shinjuku Ward, Tokyo, and site information such as votes and comments. Since the original source material and primary records of the experience cannot be confirmed from the page, it is treated as a secondary publication example, and the existence of the publication and the occurrence of the event have been separated.

• National Haunted Map - Tokyo Metropolitan Toyama Park(Confirmed on 2026-09-28) — Late at night, when you go up to the artificial hill called Hakoneyama, you can hear people crying and groaning.

Things that could be confirmed from official and primary source materials

The Tokyo Metropolitan Parks Association's page for Toyama Park describes it as "Hakoneyama," the highest point within the Yamanote Line area, and lists its location as Toyama 1-chome, 2-chome, and 3-chome, Shinjuku-ku, and Okubo 3-chome, Shinjuku-ku. It states that the park is open year-round, admission is free, and provides information on walking access to the Hakoneyama and Okubo areas, the address of the service center, and that there is no parking at the park. This is management and geographical information for Toyama Park and does not constitute confirmation of the rumored phenomenon.

• Tokyo Metropolitan Parks Association - Toyama Park(Confirmed on 2026-09-28) — Location: Toyama 1, 2, and 3-chome, Shinjuku-ku; Okubo 3-chome, Shinjuku-ku Opening days: Always open Admission fee: Free

Points of agreement/contradictions

The Tokyo Metropolitan Parks Association website does not contain any records of responses to core claims such as "a male ghost appears," "voices can be heard," or "ghost photos can be taken." While official documents confirm the place name/district of Hakoneyama and the park's regular opening hours, this does not support the phenomena of voices, will-o'-the-wisps, or photos. The geographical descriptions in the source of the rumors and the management documents do not coincide, and the occurrence of paranormal activity is deemed immeasurable.

The rumored atomic claim	Matching results	reason	Corresponding documents
A male ghost appears	Unconfirmed	The Tokyo Metropolitan Parks Association's current park guide does not include any records or investigation results regarding sightings of male ghosts, and it is not possible to compare occurrences based solely on the rumors page.	No official data available for direct comparison.
I can hear a voice	Unconfirmed	The administrator's documents lack information such as the location, time, and recording of the voice, making it impossible to determine if it matches the official record based solely on the source text.	No official data available for direct comparison.
You can take photos of ghosts.	Unconfirmed	The official website does not deal with the photographic phenomenon or image data, making it impossible to verify the result of it being a paranormal photograph from independent sources.	No official data available for direct comparison.
The ghost of a man who committed suicide appears.	Unconfirmed	The official statement regarding the incident in the restroom does not mention any accident, suicide, or eyewitness accounts, and therefore cannot be confirmed as a concrete fact.	No official data available for direct comparison.

Alternative interpretation

The elevation differences of Mount Hakone, the trees, the wind and surrounding traffic noise at night, and the optical reflections from the camera equipment are all generally considered alternative interpretations. However, since there is no acoustic measurement or photographic data on these two pages, we will not determine which factors explain the individual experience.

Scope and limitations of the investigation

I only directly read the source of the rumor and two pages of the Tokyo Metropolitan Parks Association's park guide. I did not verify any official records regarding the excavation, incident, or suicide, nor did I check the original audio recordings, photographic data, on-site measurements, or the time and location of the witnesses. I cannot conclude that it did not happen simply because there is no mention of the strange occurrence in the official guide.

Verification result: Unmeasurable

All that could be confirmed was that the rumor was posted on the same page, and that the location of Toyama Park, the Hakoneyama area, and opening hours information were available on the administrator's page. No independent official records were found regarding the male ghost, voices, will-o'-the-wisps, the male ghost in the toilet, or the paranormal photographs, and their occurrence cannot be inferred from their existence. Therefore, a comparison of the core elements is deemed impossible.

Document Quality Score

Source transparency	26/30	The specific details of the rumor and the management guidelines from the Tokyo Metropolitan Parks Association can be viewed at separate URLs, clearly indicating the distinct roles of the two for comparison.
Historical and spatial context	21/25	The locations of the Hakoneyama area and the park are organized on the administrator's page, allowing you to track the spatial clues to the setting of the rumors.
Safety information	17/20	The park is open year-round, admission is free, there is no parking, and walking directions from multiple train stations are available on the official website, making it a useful resource for deciding whether to visit.
Newness of information	13/15	The rumor page was last updated on September 23, 2026, and the current information on the official page is also available to read directly on the day of verification, so the information is relatively up-to-date.
Transparency of the source of rumors	8/10	The rumor page lists the phenomenon in bullet points and provides background information, but does not include the original source or the poster's information.
total	85/100	This is the overall quality of the materials. It does not represent the degree of truthfulness or danger associated with the supernatural phenomena.

Safety information and maps

According to official information, Toyama Park is open year-round and offers walking access to the Hakoneyama area, but there is no parking available. Do not enter the park at night to verify rumors, pay attention to your footing and surroundings in dark areas and on the paths, and prioritize the signs and signs posted by the park management.

Check the area around Toyama Park on Google Maps.

2nd Place: Mizumoto Park | Unmeasurable (79 points)

The rumored details

The Mizumoto Park page on the National Haunted Map features rumors of a boy's ghost appearing there and of curses. The text recounts a story about a local resident who, bothered by the noise of a biker gang, strung up piano wire to deter them, only to have one of the gang members' heads get caught in the wire and blown off. It also mentions a clearly unused, dilapidated toilet called "the cursed toilet number 10," and that anyone who tries to destroy it will be cursed, as well as the presence of a Jizo statue. The text distinguishes between the content published on the site and confirmed facts, including the "no trespassing" notice on the page.

Source of the rumor and date of verification

The source of the rumor is the individual page for "Mizumoto Park" on the external website "National Haunted Map," confirmed on 2026-09-28. The page was updated on 2026/02/02 and displays the number of votes, comments, and personal accounts for haunted spots in Katsushika Ward. As no links to the original accident records or official investigations regarding the headless rider and the origin of toilet number 10 could be found, it is treated as a case of secondary dissemination.

• National Haunted Map - Mizumoto Park(Confirmed on 2026-09-28) — Rumor has it that in the past, a neighbor who was troubled by the noise of a biker gang strung up piano wire as a countermeasure.

Things that could be confirmed from official and primary source materials

The Tokyo Metropolitan Parks Association's Mizumoto Park page lists the park's location as Mizumoto Park, Mizumoto Sarumachi, Higashi Kanemachi 5 and 8-chome in Katsushika Ward, and Takasu 3-chome in Misato City, Saitama Prefecture. The park is open year-round, admission is free (some facilities require a fee), and the page provides information on bus routes from Kanemachi Station, the location of the Mizumoto Park Service Center, and parking (for a fee). While there is information on normal use, there is no description to support the rumors about the headless rider, the curse, or the origin of toilet number 10.

• Tokyo Metropolitan Parks Association - Mizumoto Park(Confirmed on 2026-09-28) — Location: Mizumoto Park, Mizumoto Sarumachi, Higashikanemachi 5 & 8-chome, Katsushika Ward; Takasu 3-chome, Misato City, Saitama Prefecture. Opening days: Always open. Admission fee: Free (some facilities require a fee).

Points of agreement/contradictions

The official management page lists the location, opening hours, transportation, and service center information for a typical park, but it does not include any records of incidents related to the boy's ghost, the curse, the incident where a head was severed by piano wire, or the suicide/curse at toilet number 10. Conversely, it is impossible to determine the rumored abandoned building or whether entry is permitted based solely on the information on the official page. Therefore, this document cannot support or contradict the core claim, and is therefore indeterminate.

The rumored atomic claim	Matching results	reason	Corresponding documents
The ghost of a boy appears	Unconfirmed	The Tokyo Metropolitan Parks Association's guide to Mizumoto Park contains no records of sightings or investigations into the boy's ghost, and the incident cannot be confirmed based solely on the publication of rumors.	No official data available for direct comparison.
To be cursed	Unconfirmed	The current management documents cover user information, but they do not include details about the conditions under which curses occur or records of damage, resulting in a lack of independent comparative data.	No official data available for direct comparison.
The head of a biker gang member got caught on a piano wire and was blown off.	Unconfirmed	The administrator page does not contain any records of the piano wire, accident, or death, and the causal relationship between the events described in the rumor cannot be verified with official documents.	No official data available for direct comparison.
If you try to destroy a toilet, you will be cursed.	Unconfirmed	The location, history, and records of the destruction of toilet number 10 are not shown in the official guide, making it impossible to connect the facts of facility management with the claims of a curse.	No official data available for direct comparison.

Alternative interpretation

When facility updates, closures, nighttime noises, and user posts within the park are mixed together, it's possible that events from different locations or times could be circulated as a single ghost story. However, since the location and maintenance history of toilet #10, as well as records of piano wire accidents, have not been confirmed, a specific alternative interpretation cannot be determined.

Scope and limitations of the investigation

I only directly checked the rumor page and the Tokyo Metropolitan Parks Association page, and did not investigate police, fire, or accident records, toilet management history, the origin of the Jizo statue's installation, on-site notices, or original eyewitness posts. Therefore, I will not treat the incident of the head being severed or the deaths of the parent and child as fact.

Verification result: Unmeasurable

Claims about a boy's ghost and curse, death by piano wire, and the origin of toilet number 10 are specifically written on the rumors page, but there are no corresponding records in the management documents we checked, nor is there any independent document to prove the occurrences. The regular information on the administrator's page only indicates the existence and usage information of the park and does not support or refute the ghost stories, so we have determined that it is impossible to measure.

Document Quality Score

Source transparency	25/30	The rumored story and the administrator's user guide are on separate pages, allowing for tracking of accidents and facility origins as unconfirmed.
Historical and spatial context	18/25	While the location of Mizumoto Park, which spans multiple districts, and information on how to use the waterfront are available, the rumored history of the facility and any accidents that have occurred there are not documented.
Safety information	17/20	Specific information regarding usage, such as the park being open year-round, free admission, bus transportation, a service center, and paid parking, can be found on the management page.
Newness of information	12/15	The official page can retrieve the current information as of the date of verification, and the rumor page also has an update date of 2026, but it is not possible to track the time of the accident information.
Transparency of the source of rumors	7/10	While the rumored storyline and comments section are readable, there is no official source indicating the first appearance of the piano wire accident or the toilet.
total	79/100	This is the overall quality of the materials. It does not represent the degree of truthfulness or danger associated with the supernatural phenomena.

Safety information and maps

The official website states that Mizumoto Park is always open and free of charge (some facilities require a fee), but that parking is charged. Do not confuse the "no entry" notices on the rumor page with the park's overall rules. Follow the on-site management signs, do not enter closed-off facilities or dark areas, and avoid nighttime activities for verification purposes.

Check the area around Mizumoto Park on Google Maps.

3rd Place: Koganei Park | Unmeasurable (73 points)

The rumored details

The Koganei Park page on the National Haunted Map lists rumors of a female ghost appearing there, mentioning that it's popular with families during the day but deserted and spooky at night, and that a murder has occurred there in the past. Furthermore, it includes a summary of a TBS television news article titled "News that occurred on October 2, 2023," which states that what appears to be human bones, shoes, and a bag were found in the woods of Tokyo Metropolitan Koganei Park, and that the identity information matched that of an adult male who was reported missing in 2020. These are the contents of the page and should be treated separately from a definitive assessment of the incident.

Source of the rumor and date of verification

The source of the rumor is the individual page for "Koganei Park" on the external website "National Haunted Map," and the verification date is 2026-09-28. The page was last updated on 2024/07/01 and displays a section for a female ghost, as well as a voting section, comments, and a news section. The news section is presented as a summary of a TBS TV broadcast on 2023/10/2, but since the original broadcast and police documents were not directly obtained in this verification, we will distinguish between published examples and confirmed facts.

• National Haunted Map - Koganei Park(Confirmed on 2026-09-28) — A female ghost appears. During the day, there are many families, but at night it is deserted and scary. A murder has occurred here in the past.

Things that could be confirmed from official and primary source materials

The Tokyo Metropolitan Parks Association's Koganei Park page lists its location as Sakuracho 3-chome, Sekinocho 1-chome and 2-chome in Koganei City, Hanakoganei Minamicho 3-chome in Kodaira City, Mukodaicho 6-chome in Nishitokyo City, and Sakurazutsumi 3-chome in Musashino City. It states that the park is open year-round and admission is free (some facilities require a fee). It also includes the address of the service center, the number of parking spaces, warnings to visitors regarding litter, musical instruments, motorcycles, etc., and requests to call 110 if suspicious individuals are spotted. This page does not record any murders or discoveries of bones.

• Tokyo Metropolitan Parks Association - Koganei Park(Confirmed on 2026-09-28) — Location: Sakuracho 3-chome, Koganei City; Sekinocho 1-chome and 2-chome; Hanakoganei Minamicho 3-chome, Kodaira City; Mukodaicho 6-chome, Nishitokyo City; Sakurazutsumi 3-chome, Musashino City. Opening days: Always open. Admission fee: Free (some facilities require a fee).

Points of agreement/contradictions

No records of responses regarding the female ghost and the murder case can be found on the administrator page. The stories of bones, shoes, and a bag from October 2, 2023, and the missing person report from 2020, as mentioned on the rumors page, are not found in the official park guide that we have checked. Therefore, apart from the information published, we cannot compare it with other independent sources, and we cannot definitively determine whether the events are fact or false. We will not mix the paranormal claims with summaries of the incident reports and will consider them immeasurable.

The rumored atomic claim	Matching results	reason	Corresponding documents
A female ghost appears	Unconfirmed	The Tokyo Metropolitan Parks Association's guide to Koganei Park does not contain any records of sightings or investigations of a female ghost, and it is not possible to compare occurrences based solely on the information on the paranormal page.	No official data available for direct comparison.
A murder case has occurred in the past.	Unconfirmed	The administrator page provides park usage information, but it does not include the date, time, location, or investigation results of the murder, making it impossible to confirm the facts.	No official data available for direct comparison.
What appears to be human remains	Unconfirmed	While the rumor page contains news summaries, the official park guide we checked does not contain any records to support the discovery or appraisal, making independent comparison impossible.	No official data available for direct comparison.
An adult male who was reported missing in 2020.	Unconfirmed	I have not directly reviewed police documents or original news reports that show a relationship between the missing person report and the person's identity, and therefore cannot definitively determine their identity based solely on the summary of the rumor page.	No official data available for direct comparison.

Alternative interpretation

The low number of people using the area at night, the visibility of the woods and pond, and the re-spread of past news may have intensified the narrative of fear. However, since the actual location of the incident, the investigation results, the circumstances under which the woman witnessed the event, and the nighttime environment have not been confirmed, we should not assume a causal relationship based solely on atmosphere or news reports.

Scope and limitations of the investigation

The only sources I directly verified were individual pages on rumor sites and the Tokyo Metropolitan Parks Association's park guide. I did not obtain police statements, TBS broadcast sources, investigation results, bone analysis, original eyewitness accounts, or nighttime on-site measurements. The absence of incident records on official pages does not prove the non-existence of the incident.

Verification result: Unmeasurable

Multiple specific claims, such as a female ghost, a murder case, bones, shoes, and a bag from 2023, and the identity of a missing person from 2020, are posted on the rumor page, but these cannot be substantiated by the administrator page alone. Even if the location and usage rules can be confirmed, this does not constitute evidence of an incident or paranormal activity. Areas where comparison with independent sources is not possible are considered unmeasurable, and news summaries are not accepted as established facts.

Document Quality Score

Source transparency	23/30	I checked the rumor page and the administrator page separately, but I still need primary sources for the bone news and murder case.
Historical and spatial context	15/25	While the park's location, spanning multiple municipalities, and its facilities are known, no official history explaining the rumored incidents can be obtained this time.
Safety information	16/20	The current page contains information on opening hours, parking, precautions regarding noise and motorcycles, and how to contact 110 (the emergency number) in case of suspicious individuals, which is helpful for making concrete safety decisions.
Newness of information	12/15	The administrator page was retrieved on the verification date, and the rumor page shows an update date of 2024, but the timeliness of the news summaries and any follow-up information have not been verified.
Transparency of the source of rumors	7/10	While the locations of rumors and news summaries can be identified, the conditions under which the woman was seen and the primary records of the news sources are not combined into a single document.
total	73/100	This is the overall quality of the materials. It does not represent the degree of truthfulness or danger associated with the supernatural phenomena.

Safety information and maps

The official website states that Koganei Park is open year-round, with 431 parking spaces in the first parking lot and 126 in the second, both available 24 hours a day for a fee. Visitors are asked to report any suspicious individuals to 110 (the police emergency number), and nighttime musical performances and motorcycle traffic within the park are restricted. Visitors are advised to avoid venturing into dark wooded areas and prioritize local regulations and general safety.

Check the area around Koganei Park on Google Maps.

What I learned by crossing locations

What the three locations have in common is that while external pages specifically describe paranormal phenomena and events, the administrator pages focus on location, opening hours, transportation, and usage precautions. While the administrator documents provide clues about the settings—Toyama Park being in the Hakoneyama area, Mizumoto Park its waterfront and facilities, and Koganei Park its large forest and pond—these are separate from records indicating voices, curses, spirit appearances, and incidents. Although the posting and update dates of the rumors can be confirmed, the lack of initial appearance dates, site conditions, and independent accident records makes it impossible to determine the core claims of all three locations. The differences in document quality do not reflect a ranking of frightening or truthfulness.

summary

What we were able to confirm this time is that the three parks are listed in the Tokyo Metropolitan Parks Association's management guide, that they are public spaces with locations and usage conditions, and that different rumors are posted on external websites for each of them. The voices, ghosts, curses, murders, and bone discoveries mentioned on the rumor pages will not be accepted as facts because there are no records to compare them with the official guide we directly examined this time. In order to make comparisons in the future, it will be necessary to individually verify the primary records, dates, locations, and investigation methods corresponding to each claim.

FAQ

Does "unmeasurable" mean the rumor is wrong?

No. What I mean is that these two types of documents alone cannot either support or refute the core claims written in the rumors. Just because it's not mentioned in the official announcement doesn't mean it didn't happen.

If the park locations match, does that count as a partial match?

No. While location and the existence of facilities can help identify the setting, they do not provide evidence of a ghostly appearance or curse. In this case, we separated the claims of supernatural phenomena/incidents from the records in administrative documents, and those for which there was no comparable evidence were classified as immeasurable.

May I verify the rumors in person?

Avoid nighttime ghost hunting or entering restricted areas. Prioritize park management signs, opening hours, and traffic rules. Do not pursue anything alone if you feel something is wrong. Consult the usual safety office if you encounter any dangerous or suspicious situations.