Hiroya walks into the gym to assist muscleboy Kosuke with his routine and stretches. Of course Hiroya has a few particular stretches in mind that don't often get to occur in a gym, but it's a perfect time on a deserted workout floor. They take their unbridled fuck action to the boxing area where Kosuke braces for a deep drilling against a suspended heavy bag. And he gets some extra fitness in his routine when he climbs on to squat his ass onto Hiroya's ever-ready stiff cock. You can bet built bud Kosuke headed home sweaty and knowing his body got an extra-thorough workout that day.