In the hot spring inn of Aizuwakamatsu-Tajima, there was a report from a regular guest about the presence of a beautiful, seductive, and extremely erotic proprietress. Ruby's filming team immediately headed to the hot spring to request a shoot. Waiting there was a stunning, sharp-eyed mature beauty, Suzusuzu-san, who appeared to be in her late 30s and was actually 45 years old. Upon inquiring, it seems that many guests visit specifically for the proprietress, and occasionally, she makes advances towards guests she takes a liking to. What about the proprietress's sex life...?