What does sustainability mean in Japan and how can it be researched? The multidisciplinary blog ‘Sustainability in Japan and beyond’ highlights current research on sustainability in Japanese society. The blog posts are based on projects by members of the DIJ research cluster ‘Sustainability in Japan’ and contain reflections and reports from ongoing research. Sebastian Polak-Rottmann, head of the research cluster and editor of the blog, also invites contributions from external researchers dealing with sustainability in Japan or other countries and regions. The first five blog posts include reports on research excursions to post-disaster areas in Ishikawa, rural parts of Tokyo, and to the Expo in Osaka; a report of a conference on sustainability; and an article on meat consumption.