A military port city is a place that has been rapidly urbanized by the laying of naval bases and other naval facilities where it used to be a poor village, and in that sense, it is positioned as a model of a modern city. Such a naval port city has gone through a unique urban formation process that is different from other cities, and the traces of it still remain in the landscape. In addition, a naval port city can be positioned as an urban space equipped with military-specific port facilities and production functions, with a unique spatial organization produced based on the installation of the launching department and the naval air force (organizations and facilities that become the predecessors). In this paper, a humanistic approach is attempted in the entertainment space of Sasebo, a military port city. In particular, the attempt in this paper is to investigate how the relationship with those who are otherized by power subjects such as the state or local administration affects the formation or change of entertainment spaces. This study is expected to be a response to the modern challenges surrounding the current situation of the naval port city. In conducting this study, I would like to read the atmosphere of the entertainment space of Sasebo at the time while referring to books related to the entertainment space of Sasebo (such as the and the ) and look at the entertainment space that constitutes the military port city again.