In the Korean and Japanese films analyzed in this study, the form of residence shown as‘lifetime share houses' showed a new form of family. Also, unlike the past, as the form of the family changed into a fluid concept, these films have shown alternatives to family. Through a film depicting the process of unrelated characters meeting and becoming a family, it was clear that there should be bonds, commonalities, and warmth among members in the home and in the shared space. In a film depicting the birth of such a new family, it showed that a normal family fixed in the frame, that hurts each other by losing their composure because they are family members, but a non-blood relative family is more caring and soft family that maintains their psychological equanimity. Therefore, it can be said that the communal life of people without kinship is not a community formed solely for economic reasons, but a" similar family" that becomes a family. Therefore, it is necessary to continue to study the lifetime-type share houses already under way in Japan, and Korea may consider a lifetime-type share house as an alternative that can be of economic and emotional help to single-person households, including the socially disadvantaged, rather than blood-related families.