This study primarily illustrates the evolution of the feminist movement in Japan by comparing two waves of the feminist movement. Furthermore, this paper examines the development of gender roles and gender bias in modern Japanese patriarchal society. It also illustrates and explains traditional roles, Japanese ideologies, the system of Fu-you (Jap. ?# ), and modern trends in contemporary Japan. In this study, the following qualitative research methods were applied. A thorough historical context analysis was done to comprehend the social dynamics, issues, and specifics of feminism in Japan, and the principle of historicism was used to illuminate and compare the impact of the feminist movement. Furthermore, the study also examines how feminism developed after the Second World War up until the present.