To reach Otabujima Island, first travel to Hinase Port in Bizen City. From Okayama Station, take the JR Ako Line to Hinase Station (approximately 60 minutes), then walk 10 minutes to Hinase Port. From there, board the Daisei Kisen Ferry to Otafu Port on Otabujima, which takes approximately 30 minutes. If driving, take the Okayama Blue Line and exit at Bizen IC, then drive about 5 minutes to Hinase Port before catching the ferry.