New in softcover. Hardcover was published in 2022. This edited book empirically discusses stratification in contemporary Japanese society. It is unique for its examination of social inequality in relation to declining fertility and an aging population. Japan is the most aged society in the world: according to the Statistics Bureau of Japan, people who are aged 65 and above comprised 29.1% of the country's total population in 2021. Meanwhile, the fertility rate has continuously declined since the mid-1970s.