Japan likes to think of itself as one giant middle class. But wrenching economic and social shifts are splitting the nation into ranks of haves and have-nots.

• 日本一直认为自己是一个拥有庞大中产阶级的社会。但是随着经济持续衰退和社会观念转变，这个国家的社会阶层日益两极分化，中产阶级缩小。