The purpose of this study was to reveal how Koryein youth adapt to various lives in their ecological system and to suggest active educational support. Therefore, based on in-depth interview data of 5 local community teachers with rich experience in coaching Koryein youth, this study reveals what it is like to live in individual, family, school, society, national, and supernational contexts of Koryein youth, and what problems and issues are inherent in that life. In everyday life, they hang out with their friends in the same situation, but without hope and plan for life, they could not find their presence, so they were caught feeling frustrated and wandering. The unstable lives of parents were reflected and expressed in the lives of their children. In school life, they experienced fear and exclusion, and a two-sided adaptation appeared. Exemplary students drop out of school when they hit their limits. Their adaptation varied according to the interest and support of teachers. Socially, bilingual ability, visa, and career development/employment are essential for them. Although they are excluded from education and welfare services as foreigners, they wanted a work visa or nationality to settle in a familiar Korea. Their appearance similar to Koreans make them feel a sense of identity and connectedness with Korean, but they have lack understanding and awareness of the migration history of Koryein. In their daily lives, they live transnationally, moving back and forth between countries with different languages and cultures. Some youth also want a diploma from a Russian school for better career and job opportunities. However, the legal and institutional boundaries between the two countries, they have no choice but to continue their transnational life as a wandering stranger. Therefore, education and welfare policies were proposed to support the improvement of the environment in their multi-layered ecological system and systematic adaptation and settlement for Koryein youth.