Interrupting Her Brother's Workout

Story by Joshiah on SoFurry

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#79 of Incest Stories (Others)

Kyra and Timo are the kind of siblings that enjoy working out together, and they've spent many a morning on a jogging trail, encouraging each other to keep up the pace and trim off a few extra pounds.

In this latest story for Makoto, we see that they don't just keep each other motivated, but they enjoy the spoils of that hard work together, as well!

Like so many mornings before, Kyra and Timo make their way outside with the sunrise and hit the nature trial before anyone else is awake to enjoy its splendor. The cool, soothing breeze aides their pace, but it isn't enough to calm the fires of lust that burn between them...and just like that, they're back to old, bad habits, going after each other in a forbidden way.

With caution thrown to the wind, they strip what little clothing they've got on and try to finish each other off before anyone else comes down the path...

Commissions are open! https://docs.google.com/document/d/1M4k7uyTIRESrkmEhcuQPtznK7qDFrDH358Vk9-bYrGY/edit?usp=sharing And I'd love for you to get one.

If you enjoyed this story, please consider supporting me on Patreon! https://www.patreon.com/Joshiah Writing is my full time gig, and your support is genuinely helpful.

As always, read, comment and enjoy!


Kyra and Timo were the type who needed to be active to be happy, and a stretch of dreary weather was keeping them from getting outdoors in the least.

When a morning came that sunshine broke through the clouds and offered a little warmth to the world, they were quick to jump out of bed, get dressed for a jog, and make their way to the nearest path.

"I don't think it's ever rained that many days in a row before," Kyra murmured. Her voice was still clinging to disappointment, even when she was feeling the endorphin rush of their exercise. "I'm glad we're finally moving again...I was starting to meld with the couch!"

Timo was keeping pace with her easily, having plenty of energy to burn off after so many dormant afternoons. "You know, it's okay to relax once in a while," he reminded her.

"I know it is, but there's so much more to life than wasting away in front of a TV screen! I really missed getting out here...there's so many things about pathways like this that make me feel whole."

"Oh?" he cocked a brow and smiled, seeing some exuberance return to his sister. "Like what?"

"All the delight smells of flowers growing on the pathway, and the cozy cover of the trees above, and the breeze as I jog...something about being here just feels so right, even if it's hard to explain."

"You make it sound rather peaceful," Timo pointed out. "And I'm glad you've got something like that in your life. It's hard for me to feel that centered."

"Well, that's because you haven't been getting out of the house, either," Kyra suggested. "And that means you haven't been burning off nearly as much energy..."

He shrugged. "I suppose you're right."

"I am," she agreed, "And I wasn't just talking about jogging, either."

Health conscious and young, the siblings were up and on the jogging trail before most other people would even think of waking up, and that gave Kyra the boldness to reach over and give her brother a firm swat on his toned, firm backside.

"K-Kyra! What if someone saw us?"

Their personal life was a secret to most of the world, and they knew the risks of getting found out, but Kyra and Timo couldn't help indulging in sexual solace with each other from time to time. A habit that they'd formed long ago and continued to carry out, they had to learn to be more careful about their interactions as they grew older, and out in public, Timo was especially cautious about them being seen.

With just enough sunlight for them to see on the pathway, they had a very slim, brief chance to pull aside, but Kyra could see that Timo would need a little more encouraging.

"I...I honestly don't know if I'd be able to stop myself," she admitted. "Being around the house with you but not being able to touch you at all, it's...it's maddening, Timo. It's so hard to spend the whole day around you and pretend that I don't want to jump your bones every chance I get."

His feelings for her were no different, but Kyra was more forward with those desires, especially in a public place. "This has been getting at you for a while, hasn't it?" he finally asked, pausing in his stride to give Kyra time to gather her thoughts.

She came to a halt alongside him, not even to the point of working up a sweat yet. "It's not just about sex, brother...how long has it been since we could really give it our all?"

"You know I don't hold ba-

"It's not just about how hard we're fucking, either. It's about being honest...and making love to each other as we are."

The inherent taboo of sleeping with a sibling was enticing enough to turn it into a fetish for a lot of people, but for Kyra and Timo, it was like a boundary that they'd knocked down together, standing on the other side of it with a new appreciation for how many levels of intimacy a brother and sister could share.

Seeing that she needed to feel all of his passion, Timo rested his paw on her inner hip and turned to show her that he understood how she felt, but she was already a step ahead of him, resting her fingers on his chest.

Leaning up on her toes, she stole a kiss from him in the middle of the pathway, proving that she meant every word that she said; she'd show him just how much she loved him right then and there, damning the consequences of getting caught.

"Ky...Kyra..." he rested his paws against her tummy and tried to create even a sliver of distance, but she refused to leave his lips alone. "You know I love being with you, but right here...this is way too risky?"

"And doesn't that make it a little more fun?" she asked. She didn't skip a beat as she leaned her weight into his paws, forcing them to slide past her tummy and wrap around her hips. "Unless you're ashamed of making love to your little sister..."

She was challenging him, and he loved her flirtatious nature, but what she was teasing about was a truly forbidden subject. She never doubted his affection for her, but after going such a long time without being able to make love, Kyra wanted Timo to prove to her that she wasn't just another way for him to get off.

Her brother's passion was just as important to her as his flesh, and hearing that was what she needed then, more than anything.

"No," he whispered after a long pause; Kyra's lips were too busy stealing tender affection from his own for words to escape him. "I...I don't care if everyone else thinks it's wrong, Kyra. I don't care what they'd say if they knew about it..."

She could already feel the warmth and pressure of his length against her tummy as vitality flowed to the covered flesh of his cock. As close as they stood, she embraced him tightly and broke the kiss, dragging her lips across his cheek. "If you really mean that," she growled into the base of his ear, "You'll fuck me right here, right beside the path...and even if someone finds us, you won't stop until my pussy is drowned in your cum..."

It was an invitation he'd never been able to resist before, and with her body clad in only short shorts and a sports bra, her figure was giving away every message of what she wanted from him.

Taboo didn't matter, in that moment.

"Right beside the path?" he asked, trembling in her grasp as her tongue swirled at the base of his ear and left a tickle wandering down his spine. "Why not right in the middle of it?"

As bold as she'd been before, Kyra was caught off guard by the suggestion. "I know it's early, but-

"It's also exactly what you wanted, isn't it?" Timo asked, cutting her off as his digits quivered about her hips. "For me to prove that the risks mean nothing, but my sister's love means everything...what better way is there?"

When he wanted to, Timo had quite a way with words, and just hearing them was enough to leave Kyra _melting_where she stood. Her body slumped back into his powerful grasp, hoping that he'd get the message to help ease her down to the ground.

Lucky for her, he was already pushing her body that direction.

"You know we're gonna get caught for sure, now," she teased. Her thumbs hooked into the edges of her slim, bright pink waistband, easing her shorts down toward her knees as they moved to the smooth, paved ground. "Just for being so bold."

"Probably," Timo agreed with a playful chuckle. "But I wasn't joking when I said I wouldn't stop, Kyra."

"Better not have been."

Her words were snappy, but her actions still spoke louder: her back arched to push her uncovered womanhood up against the bulge of his cock, letting him feel her damp heat through the slim fabric of his shorts.

It made his knees weak as he settled on them. He leaned over her smaller figure and gazed right into her eyes, sharing an exchange that spoke of a bond that was stronger than the one society expected them to have.

"I'm not gonna go easy on you if you keep doubting me," he warned her.

She cocked a teasing grin and narrowed her eyes back at his own, wanting to hold their powerful gaze for as long as she could. "Like I'd ever want you to..."

Their skimpy outfits ended up being a perfect choice for a warm, morning jog, but they served a greater purpose as they were moved out of the way. With her back flat against the pavement, Kyra watched as Timo eased his shorts down to his ankles; they kept everything just around their legs, knowing that they might have to make a hasty escape if someone came across them.

They'd still finish before they started running, however, and they shared a giggle as their similar minds explored the thought of Timo trying to run away with Kyra still bouncing on his length.

"I can never keep anything from you," Timo admitted. "Least of all, though...is this."

The tip of his cock drooled with fresh excitement as he leaned into her body. She arched her hips up and lifted her mound to meet with his tip, and delicate, liquid arousal from her folds kissed against a precum soaked member until it rolled easily inside.

As always, they took the first few inches nice and slow, making sure that Timo was comfortably planted within her welcoming confines.

Once they were settled, however...

"Is that really all you got, Timo?

She'd start pressing his buttons all over again, but it was just a sign of how deep their relationship truly was. Even as his hips drove forth, spearing her insides on the entirety of his length, it wasn't just about the depth of his thrusts, or the force behind them.

It was her knowledge of her brother, and his own knowledge of what she loved that meant so much to her. That she wasn't just another woman to fuck when he was going through a dry spell, but something more than that to him... that was what kept her grinning from ear to ear as her chest heaved with the weight of his body crashing into her own.

"You're gonna be too sore t-to finish the run," Timo tried to warn her, but he knew those words fell on deaf ears. The day was off to a slow start before the jog, but they were half a mile down the path before they knew it, and even faster than that, minutes were racking up as Timo pumped his hips and leaned over his sister, content to feel the warmth of her body against his own. "But...I...fuck, I might be too!"

Kyra leaned up and wrapped her arms around his upper back, embracing him and capturing his body. Her chest bounced against his own as tender nipples brushed through his fur, and as his arms settled down behind her, they kept her hips elevated so he could slide into her dripping folds with practiced ease, taking a pose that they always loved to revisit.

They weren't shameful about what they did: even in the privacy of a bedroom, they didn't turn off the lights or try to hide their relation from each other.

Just like the bodies that were so closely held together, they embraced that part of their forbidden relationship, finding it heightened their passion and elevated their pleasure to a place that they only ever found in one another.

"This is a better workout anyway," Kyra offered. Her voice was bordering on breathless as she tried to roll her hips up into his unyielding body, knowing that his pace was nearly impossible to match. "And it's g-got a way better payoff...y-yes, Timo!"

Inner walls were already starting to flutter around his length as it plunged as deep as her body would allow. Her muscles clenched and milked at his shaft, knowing that he'd been saving a plentiful load for her, but she couldn't wait to feel it swimming around in her womb and filling her with new warmth...but naughtiest of all was the thought of it spilling back out of her folds as they walked home together and soaking the crotch of her panties, with no one else any wiser to their naughty morning routine.

Timo wanted to tease her about the orgasmic flutter of her womanhood, and the subtle, velvety warmth that seeped from her petals along with it, but her body ended up stealing that chance from him as her own climax begot his. "Speaking of...p-payoff..." he stammered through his words as their rapid, skillful thrusts became erratic with overwhelming pleasure. His fangs began to grit, but before he could seal them with the weight of his release, Kyra leaned in close and stole one more kiss from him, muffling his cries of delight and sealing his fate.

Of all the pleasures that her body offered to him, it was that affectionate, forbidden kiss that finally pushed him all the way over the line. Incestuous seed gushed from the tip of his cock and painted her tender, eager walls, with the luckiest streaks reaching as far as her womb, leaving her toes curling with delight at the most intimate, inner warmth she'd ever known.

It was dumb luck that they were able to finish before anyone else came upon them in the pathway, and no doubt, Kyra silencing her brother's moans helped them to get away with it, but they knew that they couldn't push the envelope much further without risking some serious trouble.

"There's still a little bit more yet, isn't there?" Kyra asked, as she felt her brother slowly retreating from her body.

He was confused for a moment; the last drops of his seed were spilling over the tender fur around her pubic mound, but against the underside of his length, he felt a new warmth tickling along his flesh.

"Now we're _really_taking risks," Timo murmured, knowing that they'd be leaving behind a little extra evidence in the form of a puddle. "But if you're sure-

" Damn sure."

Her piss eased down to the base of his length, bathing it with new warmth and moisture as he returned the favor. Taboo as their love already was, this tradition was one that they never planned to shake, either, and capping off their sessions together; whether passionate, fierce, romantic or delicate, would almost always end with a liquid blessing.

Knowing she'd love for him to return the favor, he waited for his body to calm down just enough, and a weak stream emerged, pouring over the tight, slender petals of her labia. She watched the golden stream with a giggle, feeling a genuine tickle in the pit of her stomach at the unique and terribly naughty sensation.

"Someone's going to notice this mess today," Timo suggested to her, but his words told a different tale of concern than his body, as he relieved himself against her. "And word travels fast around the neighborhood..."

"Then let's finish our jog and head home," Kyra replied, though she wasn't moving an inch until he was done. "We can get back to working out there."

Timo hadn't planned to spend his entire day pressed against the warm bodice of his sister...but he was more than happy to clear his schedule for it.