Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Manji Onsen Okumanji Okoku takes its name from the manji—the swastika symbol of Buddhist auspiciousness that represents completeness, eternal cyclical existence, and the blessing of the Dharma—a name that frames the thermal spring experience within the deepest aspirations of Japanese Buddhist thought, where the bath becomes an act of participation in cosmic blessing rather than mere physical hygiene. The sulfurous waters carry the volcanic character of hydrogen sulfide mineral compounds prized in Japanese thermal tradition for their distinctive aroma and atmosphere, within a facility whose name invokes the highest expression of Buddhist auspiciousness. Bathing at a spring named for both the manji and a kingdom creates a theatrically and cosmologically resonant spring experience unique in Japan's colorful tradition of onsen naming.
Insider tip — Manji Onsen Okumanji Okoku lies in the volcanic lowlands east of Sapporo, where Hokkaido's geothermal activity produces richly sulfurous waters. The forested setting provides a secluded retreat distinct from the island's better-known resort clusters. Waters are deeply warming, ideal for recovering from Hokkaido's harsh winters. The inland location means fewer visitors than coastal rivals, offering a more authentic local onsen experience.