Among the Kuroishi Onsen town that boasts about 400 years of history, the Nuruyu Spring Hotel is the oldest and can be seen everywhere in the city. Hence, you can feel warm wherever you go. This place is also famous for it is the birthplace of Nuruyu Kokeshi, which are simple wooden dolls with no arms or legs and have been crafted for more than 150 years as a toy for children. Temperature of the Onsen: 57 degree CelsiusQuality of Nuruyu Onsen: low sodium onsenBenefits: relieving rheumatism, arthritis, and other disorders of the joints, muscles, ligaments, Motor Neuron Diseases and neuroparalysis.  speeding up the recovery from extreme burnout  improving Neurosis and digestive systems.