The is a Japanese railway line in Kagawa Prefecture, which connects Takamatsu-Chikkà  Station in Takamatsu with Kotoden-Kotohira Station in Kotohira. It is owned and operated by the Takamatsu-Kotohira Electric Railroad. The line color is yellow.
The line first opened on 21 December 1926 between Ritsurin-Kà Âen and Takinomiya. The line was later extended on both sides to Kotoden-Kotohira and Kawarachà  in 1927.
Since the beginning of the 21st century, three new stations have opened: on 29 July 2006, on 15 December 2013, and Fuseishi on 28 November 2020. Currently, a new station named Tahi Station is planned to open in 2026.
All stations are located in Kagawa Prefecture.
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