Title: Jinsei kōki no kaisō kōzō
Subjects: Older people, Social conditions, Social stratification, Personnes âgées, Conditions sociales, Stratification sociale, Shakai kaisō, Shakaiteki idō, Shōshika, Kōreika shakai, Kōreisha
Places: Japan, Japon
Time periods: 21st century, 21e siècle