The best random things in Japan are

The music they play at pedestrian crossings

The kareoke bars

The fact it's rude if the train's late (a national apology was made by the president as one was late due to snowfall)

No beds or chairs!

No potatoes!

Trance music playing in supermarkets

The meat song played by the meat counter

That they all get pissed on the train on the way home from work!

That they wear face masks!! I have one!!