First published: March 24, 2019
In 1926 (Showa 1), James Churchward published "The Lost Continent of Mu: Motherland of Man," where he argued the existence of a lost continent called Mu in the Pacific Ocean.
Four years before Churchward's book came out, namely in 1922 (Taisho 11), Onisaburo had already described a lost continent called the Yomotsu-jima ("Island of Hades") in his Reikai Monogatari.
When Onisaburo read a newspaper article about Churchward's research on Mu, he equated Mu with the Island of Yomotsu in the Monogatari.
Volume 9 of the Monogatari says that the Island of Yomotsu, i.e. the lost continent of Mu, was 2,700 nautical miles (Approx. 5,000 kilometers; 1 nautical mile = 1,852 meters) long and 3,100 nautical miles (Approx. 5,741 kilometers) wide.
Volume 12 describes how this continent, inhabited by growing numbers of evil deities, becomes a major battle field between good and evil deities, incurring its own demise in the depths of the ocean.
The following is an illustration of the lost continent of Mu (= the Island of Hades) carried in the Omoto literature before Japan's involvement in the Pacific War. Onisaburo once said that the Pacific War was a re-enactment of the battle at the Even Pass of Hades in the Kojiki (See [SECT. IX. - THE LAND OF HADES.])