[4] However, the approval expired at the end of 1915 without the construction even beginning due to the economic depression at the time affecting the company.

[5][6] In 1924, several influential people in the Handa and Kowa regions planned to establish a company named Chita Electric Railways.

The construction was able to continue despite the Wall Street crash of 1929 thanks to financial and technical aid from the Aichi Electric Railways,[2] and the Chita Electric Railway Co. opened the 15.8 km Otagawa – Narawa section for passenger services, electrified at 1500 V DC,[8] in 1931.

The 3.0 km extension to Kōwa Station opened in August 1935 due to delays in land acquirement.

Kagiya-nakanoike Station was built between Takayokosuka and Minami Kagiya,[14] and opened from the start of the revised timetable implemented on 16 March 2024.

Meitetsu Limited Express [ja] services to Nagoya Station departs from Kōwa every 30 minutes.

Several stations on the line have been upgraded to feature ramps, lifts, and elevators due to requests from passing municipalities.