is the name used by Kyushu Railway Company (JR Kyushu) for the limited express train service operating between Hakata and à Âita via Kokura and Beppu along the Kagoshima Main Line and Nippà  Main Line in Kyushu, Japan. It runs every 30 minutes at a speed of - with a journey time of approximately 2 hours.
Services are operated by a fleet of eight 7-car 883 series electric multiple unit (EMU) trains and eleven 6-car 885 series White Sonic EMUs.
Most services are operated by renovated 883 series trains including a panoramic lounge area located in the Green Car (first class).
On 20 April 1995: New 883 series Sonic EMUs were introduced on Nichirin limited express services between Hakata and à Âita, and named Sonic Nichirin. Two years later, on the twenty-second of March in 1997: Nichirin and Sonic Nichirin services were combined to become Sonic services operated entirely by 883 series EMUs. In 3 March 2001 new 5-car 885 series White Sonic were introduced on Sonic services. 885 series White Sonic sets lengthened from 5 to 6 cars, which allowed interchangeability with the 885 series White Kamome sets. In 18 March 2007, smoking was banned in all cars. On 19 July the next year the three 5-car 883 series sets got augmented to 7 cars.