Credibility Audit
3 factors- Multiple Witnesses+2
- Physical Evidence+3
- Expert Witness+2
- 0–3
- 4–7
- 8–11
- 12–16
- 17+
DoD Observables
2 of 5- Instantaneous Acceleration
- Hypersonic Velocity
- Low Observability
- Trans-Medium Travel
- Anti-Gravity Lift
Event Description
Craft morphology
On February 23, 1975, two seven-year-old boys — Masato Kawano and Katsuhiro Yamahata — were playing in a vineyard near their homes in Kofu City, Yamanashi Prefecture, Japan, when they observed a Saturn-shaped craft descend and land in the vineyard. The object was described as approximately five meters in diameter with a domed upper surface and a ring structure around its equator, metallic in appearance and producing a low humming sound as it settled to the ground. The encounter that followed became one of the most thoroughly investigated Japanese close encounter cases.
One of the children approached the landed craft and observed a being emerge from it — described as approximately 130 centimeters tall, with a wrinkled face, three-fingered hands, and wearing a silver suit. The entity touched Masato on the shoulder, and he was immediately unable to move — a temporary paralysis that lasted for several minutes after the being retreated into the craft and the object departed. His companion ran to alert their families, who arrived to find Masato still unable to move at the site.
Adult family members confirmed finding the boy in an apparently paralyzed state at the vineyard. Police were called and investigated the site. The following day, investigators found physical evidence at the landing location: four indentations in the soil arranged in the pattern of a landing structure, and a circular area of compressed and disturbed vegetation corresponding to the craft's described footprint. The physical traces were documented by police and subsequently examined by Japanese UAP researchers.
The Kofu case was investigated by Japanese researchers including Junichi Takanashi, who interviewed the boys separately and found their accounts consistent. The children's age and the consistency of their independently given accounts, the adult family members who found the boy in a paralyzed state, the police response, and the physical ground traces gave the case a multi-layered evidentiary base that made it one of the anchor cases of Japanese close encounter research.
The paralysis effect reported — immediate loss of motor function upon physical contact with the entity, resolving spontaneously after the encounter — appears in multiple close encounter cases from different countries and time periods and has been noted by researchers as one of the more consistent physiological effects associated with entity contact reports.
Sources
- witnessMasato Kono and Katsuhiro Yamahata, Kofu, February 1975
- witnessYusuke Matsumura, Japan UFO Science Association investigation
