Single-person households accounted for 29.3% of all households in the 2018 「Population and Housing Census」, emerging as the most typical type of household in our nation , and our society is rapidly changing into a "reduced household" society centered around single-person households and two-person households.

Of the total single-person households, single-person households in their 30s and 40s account for the largest portion with 31.8%, while single-person households in their 50s to 64, including baby boomers, account for 25.1%, similar to single-person households aged 65 or older.

Single-person households are generally have a poor  quality of life, such as economic conditions, housing, social activities, and leisure, and in particular, housing issues of young single-person households and support for the formation of social relations among middle-aged single-person households, etc. are areas where policy intervention should be actively conducted to improve the quality of life of single-person households.

As the number of "non-voluntary" single-person households accounts for the majority rather than the "self-selected" single-person households, questions regarding how to improve "poverty" and "social isolation" aim to improve these people’s  quality of life in order to move toward a community where people live together in the future.