Get some exercise.

You enjoy the show of watching Niki slowly bring the waistband of her gym shorts down her curvy hips. Despite her being bold most of the time, she looks quite shy as she's observed. They slip down her delicious, chocolately thighs, and then to her ankles as she bends over and pulls them off completely. Though, she does leave on the sports bra. It does nothing being opened on the front, but there's something erotic about it--a top pulled open. You're not one to complain about that.

Then she slowly pushes down against the bouncy ball.

"What is that exactly anyway?" you ask.

She slides her hand around the exterior. "It's uhm... a special fruit. I was surprised when Aris had one. They're quite rare. People use them to work out, but they're also filled with delicious juice."

You take her by the wrist and she's no longer fighting back. As you push her down towards the ball, she gets the message, and moves the rest of the way on her own. Just like when you first came in, she pushes her breasts down against the ball and arches her rear into the air behind her.

"Delicious juice, hmm?" you whisper into her ear as you crawl over her back.

"Oh. Oh Kyle. Please, no more teasing."

You drop your shorts easily. Then you rub the head of your cock along her dripping, eager pussy lips. "You want it that badly?"

"I want it really bad!"

Almost like a new kind of grapple, you reach around and place two fingers into her mouth, and with your other hand, you grab her side. Not wanting to keep her waiting any longer, you drive it deep inside her body, and all she can do is whimper a moan as her mouth is completely full. Saliva drips down your wrist and from her lips, and she remains positioned at your mercy--thrusted forwards and back over and over again. It feels amazing to finally be inside her, and much like the ball, you bounce the girl--slapping your groin against her ass at a steadily increasing pace.

The weight of her body squeezes down against the giant fruit--thick skin straining to keep from bursting. All the while, you grip her sexy body tight in your grasp as you rock her back and forth under the strength of your powerful thrusts.

"Faster!" Each smack against her body forces a pleasured moan from her lips, and the tough girl turns an eye back to you as she demands you to speed up.

Her hands clutch the sides of the ball and the two of you buck wildly like two feral animals. You're glad you're not the one receiving here. With her special power, she could break someone in half, though in a situation like this, it's easy to forget. She's submissive for you, letting you keep her bent over with complete control, though as you watch her nearly tear her exercise ball to pieces, you're reminded of her might.

Speaking of which, the outer flesh of the large piece of fruit can only take so much. After a moment longer, it happens. The fruit bursts. It pops like a balloon under Niki's stomach, forcing both of you down into a puddle of sweet-smelling liquid. You press up against Niki's tight ass, accidentally pinning her down into the fruit juice, and the two of you lay there for a moment panting.

As soon as you pull up, Niki spins around to lay on her back. The entire front of her body is dripping wet and sticky now.

With a smile, you move down to lick your tongue up her tight stomach. It tastes similar to a blueberry, though the taste is more subtle. Either way, it's quite delicious. You drag your tongue up her shivering body, and when you reach the mighty mountains on her chest, she gasps out a moan before you even do anything further. The anticipation and the thrill drive her wild. You can feel the rumble of her heart racing--from the fucking, from the pop, from your tongue so close to such sensitive spots. Then as you drag the flat of your tongue over her mounds, she gasps out loud and grabs your head to **** it firmly between her cleavage.

But you fight back. The sensation of suffocation in her tits is great and all, but what's even nicer are the reactions she gives once you lick your tongue around her stiff nipples. As you trace the tip along the lines of her magic markings, she throws her head back and moans in frustration.

She grabs your head aggressively and brings it up for a passionate kiss. Meanwhile, one of her hands slips downwards to squeeze your ass and **** you tight against her.

A new round begins. Niki isn't one for patience, so you drive your cock deep into her body yet again. As you lick more juice off her neck, you ram into her hard and fast. You have confidence as well that no matter how hard you can think to fuck her, she'll never get hurt. She's as strong as a giant and as durable as stone, which is rather ironic given her weakness of tickling is quite the opposite in terms of strength. Either way, you pin her down with a hand groped around one breast and you clutch the side of her neck with the other, all while taking her for a spin. You ride her harder and faster, and her beautiful ruby eyes stare back into your own gaze as her colour-flushed face burns hotter. She opens her mouth, though only whimpers of pleasure escape. She gasps, pants, and begins to moan loudly straight to your face as she desperately reaches out to grab at the grass blades.

"Ooh... Ooh, fuck! Fuck yeah! Yeah, yeah~!" Niki cries. Her juice-coated body jiggles and bounces to your rapid thrusts, and she absolutely melts in your grasp. "Yes, yeeess~!"

With hands suddenly squeezing your back, the mighty warrior of your party succumbs to the overwhelming euphoria and lets out a few more trembling moans as an orgasm rushes through her body. You continue to thrust your hips, pushing her straight through and out the other side, though there's so much yet to do and you only have a limited amount of stamina, as great as it's become. You gradually come to a stop, though you hold Niki in your arms as you look down at her rather adorable smile.

Her lips quiver open and she finally speaks. "You... You didn't cum," she whispers.

"Sorry I'm only giving you one for now."

"Only one." She places a gentle hand on your chest. "You say that like you could go all night."

"I will. Next time."

Finally, it's too much. She looks away in embarrassment. "You're too much," she speaks beneath her breath so silently that you can hardly hear it.

"It's a shame. If this wasn't some kind of weird gauntlet challenge, we'd go shower the fruit juice off," you whisper as you drag a finger down her naked body. "And then have some more fun there."

She grabs the back of your head and pulls you in hard for a kiss on the lips. Then as your mouths part, she smiles again. "Stop teasing me."

"Teasing implies it isn't true."

"Oh Kyle. Wh-When this is all over, we can spend more time together, right? You're with so many girls now."

"Well, with them is one way to say it. But you're all part of my party. Of course, you, Eva, and Amara will always be my main group."

"I know." She runs a hand through her hair--messy and sticky with pieces of fruit. "It's okay. I'm not the jealous type... usually."

You slowly heave yourself up, ready to continue. As you stand over here, her eyes stare straight up at your glistening shaft towering overhead. Then you turn your eyes to see a newfound wooden door opposite of the one you came in through. It's time to continue, as much as you'd like to stay longer with any of the girls. With how far you've come, giving only one orgasm feels like it isn't enough! You could go for hours. But, the next cart of this train awaits, and you still don't know exactly how many more of these are left, or what awaits you at the end.

Niki watches as you depart and gives you a final wave.