21-year-old Rino, a new cabaret girl from Ueno, meets four salaried men who rent a small room where they secretly engage in paid encounters—some of them married, making this their hidden rendezvous spot. Though cramped, the space feels like the perfect secret hideout. Rino had first met one of the men at a club he took her to recently, and though she's been curious about him since, she never expected to see him again—now surprise and excitement swirl together. Her body is highly sensitive, especially her nipples, which feel intense pleasure when twisted or pulled. It's the ideal stress-relief setting for these office workers.