You don’t see it in Seoul either. Lots of pushing and no concept of personal space, but you wont see this.
When I lived in Japan in the Sixties, I was fascinated by the whole train thing. They way they had people whose actual job it was to “push” people onto the train...I had never seen train commuters before, and to watch people willingly allow themselves to be purposefully shoved and forced onto a train just blew my mind.