However, in 1933, the original section between Soga and Awa-Kamogawa Stations again became its own line, this time renamed the , and in 1972 it received its current name.
On the other hand, in 1933, the initial segment of tracks between Soga and Awa-Kamogawa Stations was re-established as a separate line, which was subsequently renamed , before acquiring its present name in 1972.