The Mysterious Case of Taured | A Unknown Man from future

A man arrives at a Japanese airport in 1954 with a passport from a mysterious country called 'Taured,' which doesn't exist on any map. Despite thorough checks, everything about him seems genuine. Authorities place him in a hotel room under guard, but by the next morning, he vanishes without a trace. To this day, the mystery of the man from Taured remains unsolved. Was he from another world, or was it all just an elaborate illusion?