Previously, this line extended to Kami-Kumamoto Station on one side and Kikuchi on the other.

The section between Kita-Kumamoto and Kikuchi was transferred to the Kikuchi Line on October 1, 1950, and the section between Fujisakigū-mae and Kami-Kumamoto was transferred to the Kumamoto City Tram as the Tsuboi Line on June 1, 1954.

Passing loops are located at Kita-Kumamoto Station for trains continuing on the Kikuchi Line.

All passenger services on the line continue past Kita-Kumamoto Station to Miyoshi Station on the Kikuchi Line.

Trains arrive roughly every thirty minutes.