The Man From Taured

It is 1954.
A Caucasian businessman arrives at Haneda Airport in Tokyo, for a conference.
The man communicates in several languages including Japanese and professes to have been to Japan on various occasions. 

Nothing appears to be strange until a customs official looks at his passport. The customs official is perplexed; he has never heard of the country the man's passport was issued from. It is from a country called Taured.

 The official thinks he is simply uninformed and requests his manager to take a look at the passport. His manager does not recognize it either; none of the officials at the airport do. The passport looks genuine and has many stamps from different nations including Japan.
 Clueless about a country called Taured, the custom officials request that the man show them where his country is on a world map.

He highlights Andorra ( a little country among Spain and France) on the map. Whenever the officials let him know that the spot he pointed at was actually a country called Andorra, he got exceptionally furious and swore that Taured was a real country and had existed for a very long time!
The man was agitated and annoyed at the custom officials for calling Taured, Andorra.

The officials call the hotel he was supposed to be staying in Tokyo but there was no such individual with a booking there. The organization whose conference he was attending existed in Tokyo but not in Taured.

Obviously, they thought that this man must be a cheat. As a result, they put him in a hotel room with two officials positioned outside the door (the main place of exit and entry). The room was  high up in a  skyscraper with no balcony.

Shockingly the following day when they opened the room, the man was missing with all of his belongings including his passport. How and where in the world could he have gone when the only exit and entry point to the room was guarded the whole night?

It was contended that the secret man was from another universe where the country Taured exists. The man erroneously entered our universe through a portal/ dimension, and wound up at Haneda Airport.
Another hypothesis is that the secret man was a person who traveled through time and arrived at the airport from the future. There are also individuals who claim that it's simply an urban legend.