Table of Contents

Part 1: Jana

Part 2: Nia

Part 3: Sienna

Part 4: Crystal

Jordan Montgomery sat rigid in his father's study, the mahogany chair digging into his back as he processed the words hanging in the air. His four sisters—Jana, Nia, Sienna, and Crystal—were arranged in a semicircle opposite him, their expressions ranging from shock to something he couldn't quite decipher. His father's proposition was both absurd and obscene, yet Jordan couldn't deny the stirring in his groin as his gaze drifted across his sisters' athletic figures.

"The Montgomery name stands for excellence in swimming," his father declared, pacing before the wall adorned with gold medals and championship trophies. "Our genetics are superior. It's our duty to continue this legacy."

The words seemed to echo in the study's silence. At twenty-three, Jordan had already accomplished what most swimmers could only dream of—mastering all four strokes at a championship level. His sisters, each specializing in a different stroke, were phenoms in their own right.

Jana, the youngest at nineteen, sat with her blonde hair tied back in a practical knot, her lithe freestyle swimmer's build evident even beneath her college sweatshirt. Next to her, twenty-year-old Nia's raven hair contrasted sharply with her pale skin, her powerful backstroke shoulders squared defensively. Sienna, twenty-one, the butterfly specialist, absently twirled a strand of her striking red hair, her athletic frame restless with nervous energy. And Crystal, the eldest sister at twenty-two, a world champion breaststroker, stared defiantly at their father, her muscular arms crossed over her chest.

"Let me make this perfectly clear," their father continued, his voice dropping to a threatening rumble. "The Montgomery bloodline needs to continue with the same genetic excellence. Outside breeding risks dilution of our talent pool. Jordan's seed in each of you will produce the next generation of champions."

Jordan’s hands were numb, but he felt a warmth in his chest, an uncomfortable heat that he recognized as guilt—yet mingled with something else. Something primal and wrong.

"You have one month per sister," their mother added clinically. “Plenty of time to plan each encounter — or encounters if need be — around cycles for maximum fertility."

Jordan's cock twitched traitorously in his pants as he imagined the scenario—pinning Jana against the locker room wall, her young pussy stretched around his thickness; bending Nia over the starting blocks, her ass raised high as he filled her; Sienna's red hair splayed across his chest as she rode him in the hot tub; Crystal's powerful thighs wrapped around his waist as he pumped his seed deep inside her.

"This is insane," Crystal snapped, breaking the silence. "It's illegal. It's immoral.”

Her protest was followed in quick succession by disapproval from the other girls.

“No fucking way!” exclaimed Nia.

“I - I don’t feel comfortable with this...” Jana offered haltingly.

“I’d have to be on some kind of crazy drugs to agree to that!” spat Sienna.

"It's necessary," their father replied coldly. “You will do what is required to uphold the family legacy. And if you refuse, then Jordan, you have your mother’s and my permission to do whatever it takes. Dismissed!”

The siblings began to disperse, but Jordan’s father took him aside and said in a low whisper, “You’ll start with Jana tomorrow. She's the youngest and most fertile. I've arranged for her coach to assist. He understands what's at stake."

Jordan nodded mutely, unable to voice his conflict. The prospect of breeding his sisters sickened him on a moral level, yet he couldn't deny the hardness in his pants, the perverted thrill of the taboo deed his parents were commanding.

Could he really go through with this? The question lingered as his sisters filed out of the room. Jana, noticing Jordan and their father having a private conversation, shot him a confused, vulnerable glance that made his erection throb painfully.

Whatever happened next, the Montgomery family would never be the same.

+++

The gymnasium pool echoed with the rhythmic splash of Jana's powerful freestyle stroke as Jordan watched from the shadows. She glided through the water with effortless grace, unaware of what awaited her once practice ended. Coach Matthew stood beside Jordan, his eyes tracking Jana's form with professional assessment mixed with something less appropriate. The two men exchanged a knowing glance—conspirators in the perverse plan that would unfold in the locker room once Jana finished her final lap.

"She's always had a crush on you," Jordan murmured to the older man. "Dad says she'll be more receptive if you're involved."

Matthew nodded, adjusting his clipboard to hide his growing erection. "I've noticed how she looks at me. But are you sure you can go through with this? She's your sister."

Jordan's cock stiffened at the forbidden reminder. "I have to. For the family legacy." The excuse sounded hollow even to him, but it didn't stop the throb of anticipation as Jana pulled herself from the pool, water cascading down her athletic frame, suit clinging to her supple breasts capped by nipples, visible and hard against the fabric.

"Let's give her five minutes to get in the shower," Matthew suggested, his voice heavy with anticipation.

Jordan watched as Jana disappeared into the women's locker room, her blonde hair darkened by water, her ass flexing beneath the tight swimsuit. His guilt conflicted with his arousal—and arousal was winning decisively.

Five minutes later, they entered the women's locker room, the sound of running water guiding them to the shower area. Steam hung in the air like a shroud of secrecy. Through the mist, they could see Jana's silhouette, her back to them as she shampooed her hair, completely nude and vulnerable.

Their sneakers squeaked against the tile, alerting her to their presence. Jana spun around, her eyes widening as she instinctively covered her nakedness with her arms.

"What the hell are you doing in here?" she gasped, backing against the shower wall. Her eyes darted between her brother and her coach, confusion and alarm evident in her expression.

"We need to talk, Jana," Coach Matthew said, his voice adopting the authoritative tone he used during training.

"Not while I'm naked!" She reached for her towel, but Jordan stepped forward, cutting off her escape route.

"It's about what Dad discussed yesterday," Jordan said, his eyes drinking in glimpses of her body despite her attempts to cover herself. Water beaded on her skin, running in rivulets down her toned stomach toward the blonde patch between her legs.

"Get out," Jana hissed, but her voice wavered as Coach Matthew moved closer, his gaze intense.

"You've always been my star swimmer, Jana," Matthew said softly. "And I've seen how you look at me during practice."

A blush spread across Jana's cheeks. "That's—that's not relevant to anything."

Their fingers brushed as Matthew reached for her arm, and they felt a spark – static from the dry air, but it jolted them nonetheless. Jana didn't pull away.

"Your father explained everything," Matthew continued, his hand now resting on her shoulder. "The Montgomery genetics are special. You and your siblings are living proof. The next generation deserves that advantage."

"By fucking my brother?" Jana whispered, but her arms lowered slightly, revealing the firm curves of her small, perfect breasts, nipples hardened by both the cool air and unwanted arousal.

Jordan stepped closer, the front of his track pants tented obscenely. "Think about it, Jana. Our children would dominate in the water."

Matthew's hand slid from her shoulder to her collarbone, then lower, cupping one breast. "I'll be here the whole time. Making it easier for you."

Jana's breath hitched, her resistance visibly wavering as her coach's thumb circled her nipple. "This is wrong," she protested, though her body betrayed her as she leaned into his touch.