A married woman, 'Tsukimi Iori,' came to the gym for dieting purposes. The gym trainer Yoshida, who loves breasts more than meals, thinks 'I shouldn't look!' but can't help staring at Tsukimi's breasts... After changing into sportswear, Yoshida teaches Tsukimi stretching, weight training, and aerobics while getting an erection. Before long, Tsukimi's sportswear becomes so soaked with sweat that it is practically see-through...
