On 1 December 1934, the entire route was completed and through-traffic achieved from Hizen-Yamaguchi through the station to Nagasaki. The track was then redesignated as part of the Nagasaki Main Line.
By December 1, 1934, the complete route had been completed, allowing through-traffic between Hizen-Yamaguchi and Nagasaki via the station. Subsequently, the track was renumbered to become a section of the Nagasaki Main Line.