The was a limited-stop "Rapid" train service in Japan operated by the East Japan Railway Company (JR East) between and on the Banetsu West Line in Fukushima Prefecture.
Services consist of three trains in each direction daily. Some trains are extended to run to and from during busy seasons.
Services stop at the following stations. Not all services stop at Kikuta Station.
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Services are normally formed of a 6-car 485 series limited express-type electric multiple unit (EMU) set number G55/58 based at Sendai Depot, sometimes substituted by a 6-car 583 series EMU (set N1/2). Prior to 25 February 2012, services were normally operated by Sendai-based 6-car 485 series set A1/2.
Trains are formed as shown below, with car 1 at the KÃ Âriyama end. Cars 5 and 6 are reserved-seating cars.
In June 2011, the Sendai-based 6-car 485 series EMU set A1/2 normally used on Aizu Liner services was repainted from its previous "AkabÃÂ" livery into JNR beige and maroon, returning to service from 2 June 2011.
From 25 February 2012, set A1/2 was replaced by 6-car set 485 series set G55/58, a refurbished set, transferred from Oyama Depot and previously used on Nikkà  and Kinugawa services.
Regular Aizu Liner services were discontinued from the start of the revised timetable introduced on 14 March 2015. Seasonal rapid services, named simply Aizu operate during busy holiday periods, which used six-car 485 series EMU trainsets until the timetable revision in March 2020, at which point the service began to be operated with E721 series EMUs equipped with a reserved seat section.