Japan

Kantō
(includes the prefectures of Chiba, Gunma, Ibaraki,
Kanagawa, Saitama, Tochigi and Tokyō)
Mushashi-Koyama Onsen Shimuzu-yu, Shinagawa, Tokyō
Shinjuku Thermae-yu, Shinjuku, Tokyō 
Spa LaQua, Tokyo Dome City 
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Chūbu
(includes the prefectures of Aichi, Fukui, Gifu, Isikawa, Nagano,
Niigata, Shizuoka, Toyama and Yamanashi)
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Kansai
(Includes the prefectures of Mie, Nara, Wakayama, Kyōto, Ōsaka,
Hyōgo and Shiga; sometimes Fukui, Tokushima and Tottori)