A fitness gym located somewhere in Tokyo. - There is a massage booth in one corner of the gym. - Gym members can use it freely, and usually receive post-workout treatments that mainly focus on bodywork, stretching, and cooling down, but the gymnasts offer special treatments to beautiful female customers who catch their eye. - Apparently... - Muscle training, swimming, yoga, aerobics...Special lewd techniques that will make any sports girl fall into the hands of the devil! - !