More than 100,000 copies of the song were sold under the title “Mother at the Wharf” from Teichiku recording company in September, 1954, and thus it was a big hit of that time. The song was based on the true story of the mother, Ise Tan’no, who went to the wharf of Maizuru to stand and greet her son, believing his demobilization would occur every time an evacuation ship came into the port from Siberia, for six years since the first ship that came in in January, 1950.