Having written off my taxi driver, who had blithely told me he had never heard of the Hayabusa2 mission, I entered the airport carrying an asteroid grain in its protective case, and a small-scale model of the Hayabusa2 spacecraft.
Full of confidence after completing a similar trip to France, I headed for customs.
Which was completely unstaffed.
An awkward phone conversation ensued, which began in Japanese, ended in English, communicated nearly nothing but did summon assistance.