Fuua, the daughter of a local public bathhouse, has been greeting naked customers from the reception counter since she was a little girl. Years have passed, and she has grown into a beautiful woman with slender legs and adorable, plump breasts. Even so, her routine remains unchanged—working hard every day without minding the nudity of the long-time regulars she’s known since childhood. However, the old men have changed. Seeing Fuua’s grown body, one regular exclaims, 'I have an erection for the first time in 18 years!' Unable to ignore the happy yet confused customers, Fuua’s kindness goes into overdrive. 'Want me to help with that...? But keep it a secret, okay?' She starts her service, smiling as she sucks off the long-neglected rods. Despite the secret, rumors spread, and perverted old men swarm the counter, turning the bathhouse into a scene of massive sexual prosperity!