Antoku Tenno was the child emperor of Japan who died at Dan-no-ura in 1185 during the final sea battle of the Genpei War, drowning alongside his grandmother rather than being captured. Following his death, he came to be venerated at various shrines, including Akama Jingu in Shimonoseki, where he is honored as a tragic and revered spirit associated with the sea and the region's history. Some local traditions and shrines linked to his memory are approached in connection with safety and protection, though such associations reflect devotional custom rather than doctrinal claims.