The former celebrity girl takes on SOD's signature project "Towel-less Bathing in the Men's Hot Spring!" For the first time in her life, she enters the men's bath, her slender body turning bright red with embarrassment! The unsuspecting male customers' cocks are rock hard! Serious-minded Koiki Nagisa bravely endures this shame-filled hell! "Sometimes, this kind of excitement is good too! Haha."