International Relations literature is quite unfamiliar with the global phenomenon of anime and manga. This study examines Japanese soft power via approaching anime and manga as its crucial components. The article consists of three main parts. Firstly, Joseph Nye’s conceptual framework of soft power is presented; then, the cultural politics of Japanese foreign policy after World War II is described. In the third part, the Cool Japan Project is mentioned as a main column of Japanese soft power. Anime and manga have a central place in this project, with their ability to produce content that is related to Japanese culture. This study aims to analyze the substantial contribution of anime and manga to Japanese soft power.