In 1975, two schoolboys in Kōfu reported encountering a metallic disc-shaped craft that landed in a vineyard, followed by a small humanoid being with wrinkled skin, a large head, and a pungent sulphur-like smell. One boy claimed the entity grabbed him, leaving a burn mark on his shoulder that was later photographed. Police investigated the site and documented disturbed soil and unusual marks, though no explanation was given. The Kōfu case remains Japan’s most detailed close-encounter report involving both occupants and physical traces.