START-514 · “Can I touch your muscles…?” Aroused by the sweaty, manly macho, she instantly feminizes. The reality of a frustrated idol who secretly licks the trainers - Ui Amagami

An incident at a personal gym somewhere in Tokyo. Ui, a member of a certain idol group, came as a customer and was recorded on the gym's surveillance camera seducing a trainer and having sex in the gym after closing. From there, one trainer tries to film by setting up a hidden camera, but the trainers are all seduced and the scene of them repeatedly having orgies in the gym...