THINK ABOUTIT UFO|UAP|ENTITY ENCOUNTER REPORT

1975: Kōfu, Japan UFO Landing | Fanged Humanoid Case Archive

Sometime before 7 PM on February 23, 1975, two seven-year-old boys, Masato Kawano and Katsuhiro Yamahata, were roller-skating near the Hinode Housing Estate in Kamimachi, Kōfu City, Japan, when they saw two glittering orange lights in the sky. The larger flew off toward Mt. Atago; the smaller descended into a vineyard behind the estate, ticking like a Geiger counter as it landed. What the boys say they found there — a domed, silver disc some 15 feet across, resting on three ball-shaped legs, and a roughly four-foot-tall, dark-brown, deeply wrinkled humanoid with three metal fangs where a mouth should be — became one of Japan’s most extensively investigated and longest-standing UFO cases, one the two men still stand by fifty years later.

This entry draws on the case’s genuinely strong sourcing — a translated contemporary Japanese newspaper account, Leonard Stringfield’s “Situation Red,” and Albert Rosales’ humanoid encounter database — while removing something that had been layered on top of it: a set of speculative comparisons to unrelated cases from other decades and countries, and an editorial conclusion asserting more certainty than the evidence supports. Both are addressed directly in Researcher’s Notes rather than quietly dropped.

Date: February 23, 1975

Sighting Time: Before 7:00 PM

Day/Night: Night

Location: Hinode Housing Estate, Kamimachi, Kōfu City, Yamanashi Prefecture, Japan

Urban or Rural: Urban — a residential housing estate, with the landing occurring in an adjacent working vineyard

No. of Entity(‘s): 2

Entity Type: Humanoid

Entity Description: The larger of the two, roughly 4 feet tall, disembarked wearing a glowing, reflective silver uniform and carrying a long object resembling a rifle; its dark brown skin was covered in dense wrinkles obscuring any clear facial features apart from large, pointed ears and three silver, two-inch metal “fangs” where a mouth would be. A second, smaller humanoid of similar appearance remained inside the craft, apparently operating a control lever.

Hynek Classification: CE-III (Close Encounter III) — close observation with animate beings directly associated with a landed object; correctly and clearly applied

Duration: The full episode ran roughly one hour, from the initial sighting just before 7:00 PM until the light’s departure; the mothers separately observed the orange light pulsating for about 5 minutes after they arrived at the scene

No. of Object(s): 2 (one flew off toward Mt. Atago; the other landed)

Height & Speed: The landed craft stood approximately 2.5 meters (about 7–7.5 feet) high, per the primary newspaper account (Rosales’ independent catalog entry gives 6 feet); no object speed was recorded, though it was described as flying and later departing in a sudden “burst of light”

Size of Object(s): Approximately 15 feet (about 5 meters) in diameter

Distance to Object(s): The boys approached closely enough to touch the craft, and one entity came close enough to place a hand on witness Yamahata’s shoulder; the mothers later observed the light from approximately 30 meters away

Shape of Object(s): Domed, silverish disc, resting on three ball-shaped landing legs

Color of Object(s): Glittering orange while airborne; silver-colored on the ground

Number of Witnesses: Multiple — Masato Kawano and Katsuhiro Yamahata (direct entity encounter); classmate Ichiro Minegishi and his parents (a separate sighting of a shining object approximately 30 minutes earlier); both boys’ mothers (the pulsating light, observed from 30 meters); school officials who inspected the site the next day

Special Features/Characteristics: Objects emitted a crackling/ticking sound compared to a Geiger counter; the craft bore embossed, illegible characters on its hull; a hatch opened with an automatically extending ladder; the entity patted Yamahata’s shoulder twice and spoke in sounds “like a tape recorder running backward,” after which Yamahata collapsed in temporary paralysis and was carried away by Kawano; two concrete fence posts at the site were found pushed over the next day, alongside a ring-shaped ground pattern; a schoolteacher reported detecting radioactivity within that ring, though not with calibrated instrumentation; official Civil Aviation Bureau investigators attributed the aerial lights to a YS-11 propeller aircraft that regularly flew the area at that hour, without addressing the entity reports; the witnesses maintained a consistent account when re-interviewed in 1982 (revisiting the site at age 14) and again in 2001, when both were separately hypnotized for a television program and gave matching accounts

Case Status: Unexplained

Source: Contemporary Japanese newspaper account (translation by Masaru Mori, Chiba City); Leonard Stringfield, “Situation Red”; Albert Rosales, “Humanoid Sighting Reports” database (citing Hayashi Ichinan & Yoshihiko Honda); photos courtesy of Dennis Hauck, International UFO Registry (IUFOR)

Summary/Description: On the evening of February 23, 1975, two seven-year-old boys in Kōfu City, Japan, reported watching a domed, silver disc land in a vineyard and a small, dark-skinned, fanged humanoid disembark and touch one of them on the shoulder, causing temporary paralysis. Their mothers separately observed the resulting orange light, and a classmate and his parents reported a related sighting shortly before. Investigators found displaced concrete posts and a ring-shaped ground pattern at the site; official aviation authorities attributed the aerial lights to a passing propeller plane, without addressing the entity reports. The witnesses have maintained a consistent account across follow-up interviews in 1982 and a televised hypnosis session in 2001.

Related Cases: Undocumented by direct connection — see Researcher’s Notes regarding speculative comparisons to other, unrelated humanoid cases that this entry does not adopt.

Detailed Report

Sometime before 7 PM on February 23, 1975, second-graders Masato Kawano and Katsuhiro Yamahata, both seven years old, were roller-skating near the Hinode Housing Estate in Kamimachi, Kōfu City, when they noticed two glittering orange objects in the sky, emitting a crackling or ticking sound the boys compared to a Geiger counter. The larger object broke away and flew toward Mt. Atago; the smaller descended into a vineyard behind the estate. Curious rather than cautious, the boys pulled off their skates and ran into the vineyard for a closer look.

What they found, they said, was a domed, silver-colored disc roughly 15 feet across and about 7 to 8 feet high, resting on three ball-shaped legs, its hull marked with embossed characters neither boy could read. As they examined it, a hatch opened on its side and a ladder extended automatically to the ground. A humanoid figure emerged: roughly four feet tall, long-armed, dressed in a glowing silver uniform, its exposed skin dark brown and so densely wrinkled that no clear facial features were visible apart from large, pointed ears and three metal, silver-colored “fangs” set where a mouth should be. It carried a long object resembling a rifle. A second, smaller humanoid remained visible inside, apparently at a control lever.

The figure wandered the immediate area, seemingly unconcerned with the two boys, until it turned, approached Yamahata, and patted his shoulder twice, speaking in sounds the boys described as like “a tape recorder running backward.” Yamahata immediately collapsed, unable to move; Kawano hoisted his paralyzed friend onto his back and ran roughly 30 meters home. Both boys, in near-hysterics, told their mothers what had happened. Skeptical but curious, the mothers followed the boys back toward the vineyard and confirmed seeing an orange light pulsating in the same spot for about five minutes before it departed in a sudden, blinding burst of light.

A classmate, eight-year-old Ichiro Minegishi, separately reported seeing a shining object flying toward the Hinode Housing Estate roughly thirty minutes before the boys’ encounter, while riding in a car with his parents near the Kōfu Bypass.

The following day, word of the encounter spread through Yamashiro Elementary School, where the boys drew pictures of what they had seen for classmates and teachers. School officials, led by schoolmaster Nobuyoshi Kaneko, inspected the site themselves and found two solid concrete fence posts pushed over — damage investigators concluded the two boys could not plausibly have caused on their own — along with a ring-shaped pattern in the soil near the posts. One schoolteacher reported detecting radioactivity within that ring, though not using calibrated professional instruments. Both boys were subsequently questioned at length by their parents, Kaneko, and noted UFO investigator Masaru Mori, and their accounts remained, in Mori’s own assessment, remarkably consistent.

Japan’s Civil Aviation Bureau of the Transportation Ministry offered an official explanation: a YS-11 propeller aircraft regularly flew over the Kōfu area between 6 and 7 PM at an altitude of about a thousand meters, visible to the naked eye and a plausible source for lights in the sky. That explanation was never extended to address the boys’ detailed reports of a landed craft and its occupants.

The case did not end there. Independent accounts confirm that Kawano and Yamahata, at age 14, revisited the site together in 1982, and in 2001 both took part in a television program in which they were separately hypnotized; under hypnosis, each gave an account consistent with what they had told investigators as children. Decades on, both men reportedly still stand by their original story.

RESEARCHER’S NOTES

The Kōfu Vineyard Landing — Japan 1975 and Fifty Years of Consistency

• Unsubstantiated Cross-Case Comparisons Removed: The source material repeatedly compares this case to the 1970 Kinnula Humanoid case (Finland), the 1973 Pascagoula abduction (Mississippi), the 1989 Voronezh encounter (Russia), and this archive’s own 1994 Ariel School case (Zimbabwe, occurring nearly two decades later), using language like “will no doubt sound familiar.” None of these connections is documented; they are pattern-matching observations across unrelated cases from different eras and countries, not evidence of any actual connection, and this entry does not repeat them as if they strengthen this case.
• An Overconfident Conclusion, Not Adopted: The source’s own concluding analysis states that the case’s consistency “suggests that whatever occurred in that vineyard was a profound, objective event rather than a shared hallucination.” This is an editorial conclusion that goes beyond what the underlying evidence can support on its own, and this archive does not adopt it.
• The Physical Evidence, More Precisely Stated: The displaced concrete posts and ring-shaped ground pattern are consistently reported across independent sources. The reported “radioactivity,” however, was identified by a single schoolteacher, not measured with calibrated radiation instruments by a specialist — a meaningful limitation on how much weight that specific claim can bear, even as the other physical traces remain more broadly corroborated.
• A Longer History of Consistency: Independent sources confirm the witnesses revisited the site together in 1982, at age 14, and separately underwent hypnosis for a 2001 television program, in both instances maintaining the same account. This well-documented pattern of decades-long consistency was not part of this page’s original source material, and this entry restores it.
• The Official Explanation, Fairly Stated: Japan’s Civil Aviation Bureau attributed the sighting to a YS-11 propeller aircraft that regularly flew over the area in the same time window. This may reasonably account for the initial aerial lights, but it was never extended to address the boys’ detailed entity descriptions, and no rebuttal or further investigation of that gap is documented.
• Source Chain Assessment: This case is corroborated across a genuinely wide, independent set of sources — a translated contemporary Japanese newspaper account, Leonard Stringfield’s published “Situation Red,” and Albert Rosales’ humanoid encounter database — making it one of the better cross-referenced cases in this archive, notwithstanding the added editorializing this entry has removed.

Few humanoid cases carry this much independent cross-referencing or this much sustained consistency — two witnesses telling the same story as children, as teenagers, and as adults under hypnosis, across nearly fifty years. That consistency doesn’t prove what they say happened; an official explanation for the lights exists and was never squared with the rest of the story, and the site’s “radioactivity” was never measured by anyone qualified to measure it. Filed as Unexplained, this entry gives the case’s real strengths their due without borrowing certainty from cases that have nothing to do with it.

“Like a tape recorder running backward.”