Teaches Joanna endurance

At first, there was nothing but small flashes of light sparkling against the dull darkness as the mask cut Joanna off from the outside world, but the flashes began to concentrate, and suddenly Joanna found herself having been dropped into a virtual world, a sky forming up above her and a sudden sensation of sand being felt between her toes,

The smell of salt water flowed into Joanna’s nostrils as she suddenly found herself standing on a serene beach, with the sea behind her and a line of tropical trees about twenty yards in front of her.

“In this part of the training,” the voice in her ear went on to inform her, “you will be taught endurance.”
As if on cue, a man appeared from amongst the trees to step out onto the beach. Joanna’s pussy was foaming at the fact that the man was completely naked, his bulging muscles flexing under his ebony skin as he walked towards her, his massive cock already erect and jutting in the air with each step that he took.

“Get down on your hands and knees,” the voice commanded Joanna, and she as she was told, thus presenting the approaching man with a perfect view of her heavenly ass.

Seconds later, Joanna was groaning with wanton abandon as the man’s thick cockhead pressed her labia apart, his hands pressing into her waist as he began to fuck her from behind.
After filling her up to the point where it was impossible for him to fit more of his member into her sex, the man began to thrust in and out of Joanna’s damp slit, and it didn’t take more than three or four thrusts before she reached another immensely emotional climax, her body shivering in front of him while her girlcum began to soak his cock.

Unlike before, when the slaver had fucked her, Joanna found that this climax wasn’t making her feel fatigued, but rather rejuvenated, as if she’d just finished a very healthy meal. Having no idea why she was reacting in this manner and quite frankly not caring too much about it either, she began to push back against the black man’s thrusts, eager to experience another orgasm.
She did do that, in fact she climaxed thrice more before the man surrendered his sperm to her with a hoarse grunt, his jizz being jetted into the snug fit of her hairless twat.

“Very good,” the voice lauded her efforts, “now he’s going to fuck your ass.”
And that’s just what the man did, after pushing Joanna forwards until she laid on her belly against the beach so that her lactating tits were pressed into the warm sand.
Just like the slaver, this man was much more savage in how he fucked her ass than what he’d been when fucking her pussy, and just like before Joanna reacted to it by slipping into a state of pure bliss, every hair on her body standing on ends while her entire being tingled and hummed, one climax hitting her after the other and each of them making her feel more alive and more energetic.

Finally, the man shot his load into Joanna’s anus and then the voice had her suck his cock, an act which she quickly got the hang of to such an extent that the man couldn’t last very long before filling her mouth with his cum and then pulling out to shot the rest of his load all over her face. To Joanna’s amazement, even the act of sucking cock had been enough to make her climax four times, her thighs as equally coated with her girlcum as her abdomen was with her milk.

“This completes this part of the training,” the voice announced, and the world began to dissolve itself in front of Joanna’s eyes.