In 1950, the predecessor of the line opened as an attraction ride called Fantasy Train(おとぎ列車,Otogi Ressha?), running through the amusement area developed by Seibu Railway and its allies. On 762 mm (2 ft 6 in) gauge track, battery-powered locomotives were used at the time. In 1952, it legally became a train line, with the official name Seibu Yamaguchi Line. In 1984, Yamaguchi Line of then steam and battery powered railway closed, and mostly on the same route new people mover line opened in the next year.