In the 21st century, the situation of East Asia's 'youth generation' can be summarized as 'an unstable generation due to an extensive recruitment of temporary employees '. This problem is common among the youth of East Asia in the 21st century. Moreover, they are trying to unshackle the collective hierarchical structure that was built by the past society. In particular, the current generation of young people today face the problem of economic inequality, which has emerged in the process of distributing perks of economic growth that entrenched the 21st century. Young people's expressions of opinion was emphasized in the era of the internet. Moreover, popular cultural products today have nothing to do with politics, but they associate their identity with the youth through entertainment channels. By analyzing the disposition of East Asian youth in the 21st century, we found that modern systems, customs, and norms that East Asian countries followed in the 20th century are no longer valid today. Therefore, we need to reflect on everyday life of the 21st century, which is unlike life in the 20th century, wherein a person underwent four stages, namely, school education, professional life, political reality, and family relations.