«Son Bun to Gandī. Ryōsha no seijiteki teigen ga icchiten o mīdasenakatta no wa naze ka» (孫文とガンディー。両者の政治的提言が一致点を見いだせなかったのはなぜか, Sun Wen and Mohandas Karamchand Gandhi: why their two political proposals did not find a point of convergence),