catering industry, household goods.

1. Catering industry: Singles in Japan often choose to eat alone, so restaurants for one person, hot pot for one person and sushi for one person are very popular in Japan.

2. Household products: Singles need to live alone, so household products are also a part that needs attention. Japan's household products market provides various small furniture, household appliances and daily necessities for singles, such as small refrigerators, rice cookers and washing machines.