From 14 March 2015, the Ainokaze Toyama Railway took over control of local passenger operations on the 100.1 km section JR West Hokuriku Main Line between Ichiburi in neighbouring Niigata Prefecture and Kurikara in neighbouring Ishikawa Prefecture, with a total of 23 stations.

[2] While the Ainokaze Toyama Railway Line officially stretches from Kurikara in the west to Ichiburi in the east, most services terminate at Tomari to the east, with a same-platform transfer provided to Echigo Tokimeki Railway Nihonkai Hisui Line services.

[4] Set AM03 was modified for use as a special-event train, named Toyama Emaki (とやま絵巻) with new seat covers and a new external livery, returning to service on 28 August 2016.

[7] Ainokaze refers to a north-easterly breeze that blows in the region in spring and summer, and is mentioned in the Man'yōshū collection of Japanese poetry.

[7] The company was formally granted a railway operating license by the Ministry of Land, Infrastructure, Transport and Tourism on 28 February 2014.