It's exactly 40 years since a Japanese soldier was found in the jungles of Guam, having survived there for nearly three decades after the end of World War II. He was given a hero's welcome on his return to Japan - but never quite felt at home in modern society.

For most of the 28 years that Shoichi Yokoi, a lance corporal in the Japanese Army of world War II, was hiding in the jungles of Guam, he firmly believed his former comrades would one day return for him.

And even when he was eventually discovered by local hunters on the Pacific island, on 24 January 1972, the 57-year-old former soldier still clung to the notion that his life was in danger.

"He really panicked," says Omi Hatashin, Yokoi's nephew.

Startled by the sight of other humans after so many years on his own, Yokoi tried to grab one of the hunter's rifles, but weakened by years of poor diet, he was no match for the local men....