In the early 70s, disaster movies started gaining popularity with the likes of <i>Airport</i> (1970), The <i>Poseidon Adventure</i> (1972), <i>The Towering Inferno </i>(1974), and <i>Earthquake</i> (1974). These movies killed it at the domestic and international box offices. Toei, one of the Big Four Japanese film studios at the time, noticed and wanted to take advantage of the trend. Japan’s famo...