The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7
Japan is the largest exporter of frog's legs.
114
Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
57
The first foreigner to become a samurai was an African slave.
26