Dr. Ryosuke Nishida's presentation at a seminar discusses the concepts of 'post-truth' and 'post-truth politics' in Japan, outlining how these phenomena have influenced media dynamics since 2016. He analyzes the evolving relationship between strong mass media and emerging weak internet media, specifically focusing on the political strategies adopted by the Liberal Democratic Party (LDP) in Japan, and the impact of social media on political campaigns. Additionally, Dr. Nishida reviews his analysis of the Instagram account '@kantei,' emphasizing the shortcomings of digital media in enhancing political understanding among the public.