秘湯 (ひとう) — little-known hot spring; secret hot spring; secluded hot spring
秘湯
ひ と う
Little-known hot spring; secret hot spring; secluded hot spring
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ひとう is used in practice
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比島
the Philippines
秘湯 (ひとう) — little-known hot spring; secret hot spring; secluded hot spring

比島
the Philippines