Part-time housewife Yui Hatano is persistently invited by a female friend and reluctantly goes to a gym called "Muscle Bar." "Muscle Bar" is a concept gym where muscular young men, almost completely nude, proudly display their physiques. These "macho" men provide service. Yui, feeling awkward, receives their service. Despite her confusion, she honestly admits to experiencing arousal and wetness in her private area due to the men's muscles. Please note that the recorded content may vary depending on the distribution method.
