Always maintaining a calm demeanor, the instructor 'Saki' rigorously trains her students in yoga, boxing aerobics, competitive swimming, and weightlifting. Once she flips her arousal switch, she fiercely sucks on the cock until it stands erect and throbbing, then mounts him, shaking her soft, massive tits like a sport, reaching orgasm! 'You're usually so cold, but suddenly attacking with those bouncy tits is just cheating, teacher...'
