Local culture such as rituals and landscape has been inherited throughout the history of communities. However, current young generations who are expected to succeed their culture tend to move to urban areas. An outflow of residents is sometimes observed after disaster when an affected community is reconstructed and a provided different environment from the previous one. This study focuses on how residents' identities are inextricably associated with their behavioral choices: to live as successors, to move to an urban area, or something else. In the identity-formation model, it is assumed that each resident has two types of characteristics: the specialized skill for working in an urban area and the environmental factors that form the foundation of her/his life and self, which is called "the degree of rootedness in hometown" in this study. Based on these characteristics, residents are categorized into the following groups: those who emigrate to an urban area for work with their high skills, those who vitalize their culture in their community with strong rootedness, and those who are apathetic to any activities in their community and are without much skill and rootedness. The study analyzes the conceptual structure of the choice of identity, and describes the possibility that relocation of an affected community causes emigration of its members whose preference for identity is rather strong. The study implies that essential factors that the community has developed in its history should be carefully conserved in the recovery process for identity formation of community members.