The phenomenon of "reverse culture shock" experienced by foreigners after visiting Japan, where they find their home countries unbearable due to the stark contrast with Japan's cleanliness, safety, and polite service.
Summary
High Quality of Service: Many foreigners are astonished by the professionalism of Japanese customer service, even in everyday places like convenience stores.
Public Transportation: Japan's public transportation, exemplified by the Shinkansen, is highly praised for its efficiency, punctuality, and cleanliness.
Safety: The high level of safety in Japan, where people can leave their belongings unattended in cafes without fear of theft, is a shock to many foreigners.
Food Culture: The quality of Japanese food, even in convenience stores, is described as "devilishly high quality" and is said to far surpass what many experience in their home countries.
Cleanliness: The general cleanliness of Japan, from the streets to public restrooms, makes the dirt and grime of their home countries much more noticeable and unbearable upon their return.