In Japan,what term has been used to describe young adults who remain single into their thirties,implying that they are selfish and immature?

Question

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The term "parasite singles" has been used in Japan to describe young adults who remain single into their thirties, implying that they are selfish and immature. This term gained popularity in the 1990s during Japan's economic recession, which made it difficult for young people to find stable employment and housing. As a result, many young adults stayed with their parents and did not contribute financially to the household, leading to the label "parasite singles."

In Japan,what Term Has Been Used to Describe Young Adults