After the war, the public was enthusiastic about general magazines. The reason is that people were starved of printed materials due to censorship and control during the Asia-Pacific War. And until the 1970s, when its role was lost to television, general magazines functioned as a key mass media with absolute influence. In the post-war commentary, intellectuals were able to freely vent their thoughts. Every time their contributions were published, they had a significant impact, generating numerous repercussions and repercussions. As a result, they became a significant means of leading the public opinion and establishing a new public ideological foundation. Therefore, it is necessary to understand the media ecosystem called ‘NonDan(: platform for discussion, 論壇)’ based on comprehensive magazines. From 1946 to the mid-70s in Japan, these intellectuals’ remarks, which were sent through printed media, served as a touchstone and compass for post-war Japanese thought and exerted a powerful influence incomparable to that of today. However, after the late 1960s, the heat of the argument cooled, and after the 1970s, when the Dankai generation came to the fore, the strengthening of TV media’s influence caused the ‘down of the argument’. As a result, the powerful ideological discourse of post-war intellectuals, who had influenced even the business nature of the media world by transmitting critical remarks and ideas about pre-war Japan for 20 years after the war, disappeared along with public interest.