A natural hot spring drawn from 1,000 meters underground. Known as 'Bijin no Yu' (Beauty's Bath), it is a rare bath where calcium ions precipitate, turning it into a beautiful milky white color. The water feels soft and smooths the skin. Bathing in the milky white water gives a unique sensation similar to a milk bath, leaving the skin silky smooth after bathing. It also has high heat retention, providing a lasting feeling of warmth from deep within.

An open-air bath using fresh seawater drawn from the Seto Inland Sea. Rich in mineral content, it is known as 'Atsu no Yu' (Heat Bath) for its ability to retain warmth. The salt-containing water has high heat retention, keeping the body warm even after bathing. The unique moist texture of seawater creates a film-like sensation on the skin. It is also expected to have thalassotherapy effects, effective for fatigue recovery and improving cold sensitivity.