A/N: Cleveland will be the Commander's crush, both for plot and lewd reasons. I'm sure a few can guess where that'll go, hehe~

Siren Experimentation: Genesis

Chapter 2: Testing

It was the day after his run-in with Observer Alpha. And safe to say, he was far from calm.

The Commander breathed a strained sigh, dropping his pen and rubbing his forehead. He was too tense to do work right now. Most of the day so far he'd just been pretending to work; scribbling signatures without actually looking at what the document entailed, reading reports and forgetting the contents the moment it was out of sight, so on. All because of the warning Observer Alpha had given him; that her companions would be arriving soon.

He wasn't sure how to feel about that. On one hand, he had been privately lusting after the five Sirens for a year now. The mere prospect of being able to fuck them again, even if he wasn't the dominant one, was beyond exhilarating. But at the same time he was literally sleeping with the enemy, and more importantly his own daughters. Which made it all the more embarrassing when Observer Omega openly professed her desire to mate with him.

''Haah...'' He rubbed his eyes. The morality of it was far too grey to truly define as 'right or wrong'. Though his libido definitely had a hand in tipping that scale.

Knock-Knock-Knock~

Knocking at his office doors made him reflexively tense. ''Come in...?''

Just like with Alpha nobody answered, sending a chill lancing up his spine. Slowly the Commander rose to his feet, his hands coming to rest on his desk-

-only for a pair of hands to grab his shoulders from behind, and shove him down against his desk. Hard.

''Nn?!'' The Commander gasped in surprise, struggling for a brief second – until a sultry-smooth voice graced his ears.

''Don't struggle. You look so undignified doing so.'' Tester Beta purred to him, her lithe hands gripping his slackening shoulders.

''Then don't surprise me like that...'' He grumbled, wincing when she tightened her grip.

''You're a hard man to get ahold of, what with your subordinates wandering around.'' The Siren replied, her breath brushing against the back of his neck. ''Teleportation was the only way.''

A shudder lanced through him as the Siren's soft lips pressed against the back of his neck, intimately feeling her tall frame press against him; bending him over his desk. Her lithe hands slid off his shoulders and down his arms, applying just enough strength to keep him pinned but no more, wordlessly telling him to submit. Not that he could resist in the first place; best thing he could do was squirm, and she had made it clear she wouldn't have any of that.

Gentle footsteps in front of him made him glance up, watching the air warp and bend before a figure walked out. He could tell it was Beta's daughter immediately. She had the same heart-shaped face, her silver-white hair falling down to her mid-back and messy in quality. Golden eyes peered out from beneath her fringe, calculating but curious. She was taller than Omega had been, coming up to his collarbone in height. Her lithe frame was hidden beneath a black crop-top that fell to her flat stomach, a matching black skirt reaching down to her knees and meeting a pair of metallic socks that covered her shins.

''Tester Tau, at your service.'' His daughter gave a small salute. ''A pleasure to meet you, Father.''

Her voice was soft and monotone, an almost-curious lilt present in her tone. ''Y-Yeah... nice to meet you too.''

Tester Beta chuckled into his ear. ''Tau has become very interesting to me, during my time raising her... and that has lead me to want more. Additionally, there remains the prospect of Tau also bearing your children; or grandchildren, as it would be.''

Anything he intended to say was cut off into a groan as Tester Beta bit his ear, her tongue lazily tracing his ear a moment later. He couldn't tilt his head to look at her, able to only endure the achingly sensual movements she made; shuddering when she released his right wrist. Her hand deliberately trailed up his arm and down his chest, moving with such painful slowness it made him groan with need – twitching when she helpfully sped up, sliding her hand down to his crotch.

The Siren kissed the back of his neck and nipped at his skin, her teeth leaving a mark. His attention however was fully on the hand trailing around his crotch, the back of her fingers daintily rubbing his clothed cock with teasing slowness. Just as he was about to groan she twisted her wrist, grasping his zipper and swiftly yanking it down, allowing his cock to slip out and into her waiting hand.

''Nn...'' The Commander shuddered as she gripped his cock.

''Hmhm...'' Tester Beta chuckled lowly, dragging her tongue up his neck. ''Getting so hard just from seeing us?''

He pointedly didn't reply but she took his silence as a yes, smirking haughtily as she lazily kissed and nipped at his neck. A twitch lanced through his body as she rolled her wrist, giving his swelling cock a single, slow jerk – followed by another one a second later, then another. Each one achingly slow and with a slight pause between them, his cock quickly growing rock-hard from the sensation of her soft hand; intimately remembering their first time together.

Tester Beta bit his neck particularly hard, eliciting a groan from his throat. Right, she could read his mind. He forgot about that. Her teeth loosened from his neck and her tongue replaced it, slowly licking the bite mark better, as if rewarding him for figuring it out. Her hand mercifully began to move faster as well, jerking his twitching cock off with flawless rhythm. The Siren soon threw her thumb into the mix, teasing the tip of his dick while she jerked him off, whether it be tracing lewd circles around the tip or pressing down on it, the gentle pressure extracting a strained groan from him.

''Mm... Tau.'' Tester Beta murmured, earning her daughter's undivided attention. ''Lift your skirt.''

The younger Siren obliged wordlessly, grasping the hem of her thin black skirt and pulling it up – and revealing to him she wore no panties. Her creamy thighs and smooth pelvis were laid bare to him, her cheeks gaining a faint pink tint as he stared; unable to look anywhere else due to Beta's hold on him.

''...Mother likes to do tests on me, so I forewent wearing underwear a while ago.'' Tester Tau informed softly, meeting his half-lidded gaze.

Tester Beta chuckled slightly and made a gesture he couldn't quite see, but Tau understood. His attention fully refocused on his daughter as she trailed her free hand down to her pussy, lithe fingers ghosting between her thighs until she was pressing them against her hairless folds; a soft moan working its way out her mouth as she touched herself. She moved her fingers slowly, his eyes intimately watching as they slid between her soft-looking folds but didn't outright slide inside, simply teasing herself for his viewing pleasure.

''Mn...'' The Commander bit back a groan when Beta squeezed his cock again.

The Siren matriarch chuckled into neck and tilted back, her sizeable breasts leaving his back. Even though he could move freely he didn't, simply watching as Tau masturbated for him, her eyes never leaving him as she rubbed her delicate pussy. That was until Tester Beta unhanded his cock and grabbed his arms, yanking him upright and forcing him to look away from his quiet daughter, a shudder lancing through him when Beta pulled his back flush against her.

''Tau.'' Tester Beta intoned, her voice brushing past his ear; the Siren standing a little taller than him. ''Come here.''

Their daughter obeyed, continuing to slowly touch herself even as she walked around his desk until she was in front of him, cheeks growing more red. At Tester Beta's murmured words she dropped down to her knees, her face ending up directly at eye-level with his twitching shaft, aching for attention. And as he felt Beta chuckle behind him, he soon realised her intentions.

''Go on.'' The Siren seductress whispered into his ear, releasing his arms. ''Try her mouth~''

Lustful anticipation shot up his spine and he shivered, his arousal only growing when Tau obediently opened her small mouth and gazed up at him expectantly, her tongue hanging out her mouth as she awaited his dick. He could nearly feel Beta's own anticipation, giving him the necessary push to take a small step forwards, lay one hand on his daughter's head and the other on his cock, and slowly guide his dick towards her mouth.

Tester Tau opened her mouth a little wider, a shudder lancing through him as the tip rubbed against her tongue before he pushed deeper, his shaft sliding into her warm, wet mouth. Her tongue slipped back inside but she didn't close her mouth fully, giving him room to slide more of his cock inside; pleasure tingling across his cock as the inviting hotness of her mouth relentlessly teased his shaft.

''Rougher.'' Tester Beta kissed his ear, her teeth grazing the rim. ''Fuck her~''

The Commander twitched and resisted the inviting possibility, stubbornly refusing to be so rough with his daughter. Beta clearly disapproved of such resistance, biting down on his ear and sliding her hands up, covering his eyes. For a moment all he could see was darkness – until dozens upon dozens of images were forced into his mind, replaying repeatedly and display all manner of his subordinates being face-fucked, willingly or not.

''Mm! M-Mmph!'' Hammann's flustered cries were muffled by his throbbing cock, his shaft sliding and out her mouth roughly – her head held in place by his heads, preventing her from pulling back for air.

The image left but the phantom sensations didn't, groan leaving him as he vividly imagined fucking Hammann's mouth. Unconsciously he laid his hands on Tau's head, threading his fingers into her pale hair as she sucked him off, her small tongue wiggling and worming around his shaft. Even if he couldn't see his daughter's face he could feel her quiet eagerness as she sucked his cock, her ministrations sapping the breath from his lungs.

''Mmph! S-Sthp...!'' Zuikaku protested, pushing against his hips as he roughly slammed his cock down her throat, making her audibly gag and spasm as he forced her to take his dick.

In a second the illusion left but it clung desperately to his mind, Zuikaku's frantic pleads strangely arousing him more. His grip on Tau's head tightened and he dared to slowly rock his hips, gently thrusting into her warm, wet mouth – shivering when she let out a quiet moan of delight, her tongue working his cock happily.

''O-Ohh~'' Javelin's voice was muffled by his shaft as he plunged in and out her saliva-coated mouth, her eyes half-lidded as he face-fucked her. ''So hot...''

Pleasure burned in his cock and he grit his teeth, biting back a groan as Tau happily blew him; Beta's breasts squishing up against his back at the same time. At her lust-inducing whisper he began thrusting his hips, gripping Tau's hair as he pumped his cock in and out her mouth, each thrust inching him deeper inside until the tip was sliding down her throat. His daughter gagged quietly but didn't stop sucking him off, taking his cock earnestly and enduring it – for him.

His breathing grew laboured and he moved faster, his cock throbbing on his daughter's tongue as he plunged deeper and deeper – until his pelvis bumped up against her nose, his full length fitting perfectly inside her small, wet mouth. The tip of his cock was constricted by her throat and he gasped at the sensation, quickly rearing his hips back only to plunge himself back down a second later, intimately feeling her throat spasm around his cock as he violated her mouth.

''Ahh... haah...!'' The Commander panted out, yanking her head towards his cock. ''Tau...!''

''That's it~'' Tester Beta whispered devilishly to him. ''Make her feel it.''

''Mm! C-Commander~!'' Illustrious screwed her eyes shut as he rammed his cock down her throat with bestial roughness, her bare chest jiggling and bouncing as he fucked her mouth.

The Commander grit his teeth, intimately feeling the way Illustrious' tongue spasmed and writhed beneath his cock. The illusion faded and Tester Beta's hands left his eyes, his eyes immediately snapping down to Tau and watching as her eyes slowly began to roll back, struggling to breathe with his cock in her throat. The erotic sight only served to arouse him more, his cock throbbing strongly on her tongue as he rapidly drew close to climax.

''S-Shit...!'' He groaned sharply through his teeth – and roughly slammed his full length into her mouth.

His orgasm rushed through him like a fire, a rasping groan leaving his lips as he shot rope after rope of cum straight down Tau's throat. Her tongue dumbly licked the underside of his cock even as he came, helping extract as much cum as she physically could while gulping it all down without protest.

Slowly his orgasm subsided, his cock tingling with pleasurable aftershocks. With a low groan he pulled out her mouth, shuddering as he heard Tau audibly gulp down the cum left in her mouth; her pursed lips doing little to stop the small dribbles of cum from leaking out, her laboured breathing swiftly becoming apparent as she finally swallowed it all.

''Ahh... sorry...'' The Commander breathlessly apologised, a spike of guilt filling him.

Tester Beta chuckled into his ear, kissing his cheek. ''Don't be... I've already made her endure such tests before, she's fine perfectly capable of it.''

''Still...'' He murmured, slightly ashamed he had fucked her mouth so roughly. No matter how damn good it felt.

The tall Siren didn't pay his mild guilt any mind, gripping his arms from behind and tugging him back. He didn't resist, grunting as she pushed him down onto his office chair and stood in front of him, her tall height becoming all the more apparent when he was sat down. His eyes trailed up and down the Siren's frame, his eyes quickly drawn to her waist when she laid her hands on her hips; her thumbs hooking themselves under the waistband of her tight-fitting shorts.

With sensual slowness Tester Beta slid her shorts down, revealing her womanhood to his gaze once more; her haughty grin growing at the sight of his blush. She bent over slightly as she slid them down to her knees, letting them fall the rest of the way and pool around her ankles until she simply kicked them off, her shorts ending in the corner of his office. The Siren wasted no time in straddling him, her lithe hands curling around his shoulders and her unclothed pussy pressing against his shaft pleasantly, a shudder running through him.

''Hmhm...'' Tester Beta smirked arrogantly, gripping his shoulders. ''Even though you just came, you're still so hard... does the thought of being inside me arouse you so much?''

The Commander didn't say anything, but his thoughts traitorously went back to the months of wishing he could – his thoughts making Tester Beta grin proudly. She slid her left hand off his shoulder and swiftly grabbed his cock, aiming it up towards her waiting womanhood. The tip rubbed against her folds and he twitched, shuddering as he endured the cruel teasing; his dick still sensitive from face-fucking Tau.

He gripped her hips and pulled her down, but the Siren used her superior strength to keep herself in place; chuckling deeply as she continued to teasingly rub herself against his cock, teasing him relentlessly. The tip slipped between her lower lips but didn't enter; her grip on his cock stopping him from thrusting himself up into her even if he tried, leaving him simmering with lustful frustration.

Tester Beta smirked wickedly at him, lowering her hips a tiny bit more; the tip spreading her folds apart as it just-barely touched her hot core. ''Beg for it, Commander.''

''...please...'' He grit out, cheeks burning.

His Siren temptress chuckled deeply – and suddenly dropped her hips, taking over half his cock inside her in one single go. Instantly hot pleasure lanced through his cock like lightning and he gasped, mind briefly going blank as the immeasurably wonderful sensation of her insides clenched and coiled around him. Tester Beta wasn't immune to the hot pleasure either; a deep, sexy moan rumbling from her throat as she accepted his shaft into her for the first time in ages.

Tester Beta's hand returned to his shoulder, gripping both of them tightly as she raised her hips back up; and swiftly slammed herself back down against, another erotic moan passing her lips. Her inner walls tightened pleasurably around him and he twitched, sliding his hands off her hips and around to her ass, greedily fondling her perfectly-shaped butt and earning a low hum from his mate, her glowing gold eyes twinkling with arrogant amusement.

''Mm... just as big as I remembered~'' The Siren breathed, tilting her head down so their noses touched. ''Let's see if you can still please me.''

She captured his lips before he could blink, hungrily devouring his surprised groan and shoving her tongue into his mouth. The Commander shuddered and groped her ass more roughly, kissing the Siren back with as much passion as he could; but she was far more dominant than he was. She dragged the lustful kiss out until he had no more breath and only then did she break off, giving him two seconds to breathe before she reignited the kiss, dominating his mouth with her dexterous tongue.

Spikes of pleasure shot through his dick as she kept riding him, a deep groan rumbling from his chest as Beta tightened around him. Whether out of arousal or simple roughness she didn't take it slow for long; quickly picking up speed and bouncing on his twitching cock eagerly, impaling herself on his shaft until the tip bumped up against her deepest parts. The sensation of being filled only seemed to arouse her more, making her bounces grow wilder and more rough, her kisses deepening and stealing the breath from his lungs.

''Mm- haah...!'' The Commander sucked in a deep gulp of air as their lips broke apart. ''Nn... crap...''

Tester Beta chuckled deeply and suddenly shifted tactics; rolling her hips around in small circles and clenching tight around his cock, the abrupt tightness making him gasp. She didn't give him the chance to breath, ruthlessly capturing his lips and biting down on his bottom lip, her dexterous tongue slithering out and licking up the blood that leaked out; the taste of copper clinging to her tongue.

At the same time her hands nimbly went to work undoing his shirt, plucking the buttons off one by one – not undoing them, but outright ripping them off his top and forcing his shirt open. Her hands eagerly roamed down his exposed collarbone and chest, raking her nails over his skin hard enough to draw blood. Despite the mild pain it strangely aroused him even more, a lustful moan rising from his chest as he boldly ran his hands up her flat stomach and under her shirt, his hands quickly finding her perfectly-shaped breasts.

''Haah~'' Tester Beta broke off the rough kiss, licking her lips with a fierce grin. ''That's it...''

A sharp groan escaped him as she tightened around his cock, bouncing on his dick with even more roughness; his pelvis beginning to ache with how wildly she slammed herself onto his cock. His full length repeatedly speared deep into her weeping womanhood, her arousal allowing her to impale herself on him without a care in the world; doing it so roughly he dimly wondered if she was somehow trying to take him even deeper inside her.

Suddenly her hands slid off his chest and up to his face, planting themselves over his eyes. Darkness engulfed his vision for only a second before countless illusions were foisted upon him – shuddering as he suddenly found Akagi in front of him, bouncing on his cock with a look of hot pleasure on her face, her eyelids drooping and a ecstasy clear in her loving gaze; the angle giving him a perfect view of her pussy as his cock disappeared between her folds.

''Mm~! C-Commander-sama... give Akagi more~!'' The yandere moaned to him, cupping his cheeks lovingly.

His expression tightened, the illusion made all the more realistic as he felt Tester Beta's hot womanhood quiver and clench around his throbbing cock, her pelvis smacking against his in tandem with the fake-Akagi's.

In an instant Akagi was gone; replaced instead by Cleveland, leaning back as she rode his shaft, her sweet moans filling his ears. She was topless, her small but shapely breasts jiggling as she took his dick; her face flushed an aroused red and her eyes screwed tightly shut.

''O-Oh... Commander... I can't take it...!'' The blonde mewled needily, cracking her red eyes open a touch. ''L-Let's... cum together, okay...?''

The illusion struck home, his cock throbbing with burning need as he felt his orgasm begin to build; gritting his teeth as he held it back. Even more illusions of Cleveland filled his mind, his Siren temptress clearly realising his personal feelings for the blonde cruiser and exploiting it; assaulting him with an endless array of erotic scenarios. Some were gentle, some were rough, some were downright dark and forceful; but all of them featured his blonde companion, and all featured her turning to putty as he plunged his shaft deep into her weeping womanhood.

Pleasure spiked through him and he acted, grabbing Tester Beta's hands and yanking them off. ''No... I want... to see you.''

Startled surprise showed clearly on the Siren's visage, taken aback by his declaration. He didn't give her time to consider his words, grabbing her ass and suddenly standing up; ripping a gasp from Beta's throat as he picked her up and pushed her down onto his desk, sending pens and papers scattering across the floor.

The Commander swiftly gripped the Siren's hips, and began to thrust – pounding deep into Tester Beta's quivering folds with wild passion, their pelvises slapping together loudly as he fucked her so roughly. The reaction was immediate, a throaty moan filling the office as he dominated her – divine pleasure shooting through her pelvis as he slammed into her pussy over and over again, stuffing her full over and over again.

''Mm~! F-Fuck~!'' Tester Beta let loose a rare curse, throwing her head back as he drilled deep into her quivering womanhood.

He grinned tightly as she gazed up at him through half-lidded eyes, nothing but raw lust in her eyes, demanding even more. And more he gladly gave, fucking the Siren against his desk with every ounce of strength he could muster, taking great pleasure in the way her long legs buckled on either side of him each time he slammed inside her again. She couldn't even wrap them around him, so lost in pleasure she was; and in a moment of lustful passion he got an idea, one he eagerly acted on.

''H-Haah~! F-Fuck... ahh... y-yes~!'' Tester Beta spat a slew of heated curses, her nails wildly clawing at his forearms. ''F... F-Fuck yes~!''

With a deep, lustful cry the Siren climaxed, her tight insides clenching around his pulsating cock and squeezing tight, the sheer pressure nearly making him cum in an instant. He held off for several blissful seconds, enduring her quivering inner walls as they desperately sought to make him cum, pounding himself deep into her womanhood – until his own climax burned through him, and he swiftly yanked his hips back.

''C-Crap...!'' The Commander hissed, grabbing his arousal-coated cock and jerking himself off quickly; shooting ropes of cum all over Tester Beta's slick folds, her flat stomach and up to her chest, coating her in his seed.

The Siren twitched as he came, a shuddery breath passing her lips. ''H-Haah... you...''

His orgasm slowed to a stop and he shivered, releasing his cock and leaning over the tall Siren, gazing down at her flushed face. Breathlessly Beta pushed herself up on her elbows, something like a growl rumbling from her throat – and he grabbed the back of her head, pulling her into a rough kiss. Instantly she melted, her growl melting into a deep moan as she instinctively returned the kiss, meshing their lips together roughly.

Their lips broke apart with a mutual gasp, her breathless gold gaze narrowing. ''I don't believe... I gave you permission... to pull out...''

The Commander didn't back down. ''Guess that means we'll have to go again, doesn't it?''

She gripped his cheek, her nails raking along his cheek. ''So we will. And I'll be sure to make sure you don't escape.''

A shiver lanced through him when her lips quirked up, a devious smirk gracing her features. ''But not yet... not until little Tau has her turn.''

On instinct his eyes flickered to the right, landing on his aforementioned daughter. The small-chested girl was sat off to the side, watching their entire fuck session with attentive eyes, one hand discreetly beneath her skirt. She paused as he looked at her, slowly sliding her hand back out from under her skirt and discreetly wiping her wet fingers on her black skirt, her expressionless face giving no hint of her arousal. Aside from the rosy flush on her cheeks, that is.

''Hmhm...'' Tester Beta chuckled beneath him, slowly sitting up and pushing him back. ''See? She's been waiting since the day she was created, to have you inside her.''

The Siren grabbed the front of his open shirt and gave him a light shove, the unexpected push sending him falling down onto the ground with a ragged grunt, the wind briefly knocked out of him. At Beta's wordless beckon his daughter slowly walked closer to him, his cheeks flushing red as she approached him; and got a lucky look up her skirt, seeing her slick arousal dribbling down her inner thighs.

With rosy cheeks Tester Tau grabbed the hem of her skirt and pushed it down, letting it slip off her narrow waist and hit the floor with a thump. Without anything to hide her lower half he got an open view of her delicate womanhood, her smooth pelvis unmarred and her hips narrow. She lowered herself down onto her knees and straddled him, her heavy breathing becoming audible to him as she positioned herself over his sensitive cock, looking at it as if it was her greatest challenge yet.

''Here I go... Father...'' Tau breathed, gently cupping his cock and pushing it towards her slick folds.

The tip pressed against her womanhood and easily spread her pussy lips apart, sliding inside her. Instantly her ungodly tight insides clamped around the tip of his cock, a sharp groan rumbling from his chest as his daughter squeezed his shaft – a cute whimper escaping her lips as he penetrated her virgin entrance. Not content with just the tip she went lower, sliding down his ample girth and spreading her insides apart, her expression tightening as she took more and more of his cock inside.

Tau stopped just as over half his cock was inside, panting lightly from the exertion. ''So... big... I don't know... if I can fit him inside... Mother...''

Tester Beta hummed, kneeling down behind her daughter and grabbing her hips. ''Nonsense. All you need to do... is try harder~''

A sharp gasp fled Tau's lips as Beta yanked her hips down, forcing her to take even more of the Commander's cock inside. ''A-Ah~!''

The Commander groaned deeply as his daughter's inner walls clamped tight around his cock, the tip of his dick hitting her very deepest parts. Even then she couldn't fit his full length, her arousal trickling down the small part of his cock left outside her unbelievably tight pussy. On instinct he held her narrow hips and squeezed them, his fingers sinking into her soft skin as he gently tugged her down, but he couldn't physically push any deeper inside her; every inch of her pussy stuffed with his cock.

Tester Tau took a long few moments until she stirred out of her daze, a weak groan quivering past her lips as she slowly began to move; lifting her hips up a tiny bit before pushing back down again. Her inner walls squeezed him tightly whenever she so much as twitched, her ungodly tightness making it impossible to breathe easily. It took great effort to not simply buck his hips and thrust up into her, lest he break her apart with his own shaft.

''Ahh... ahh~'' Tau moaned deeply as she slowly got into it, moving her hips more earnestly.

He twitched as she slid quicker along his cock, releasing her narrow waist and instead sliding his hand up and under her crop-top. His hands quickly found her breasts and he groped them, eliciting a cute moan from his daughter as he fondled her chest – small and easily fitting into his hands, still retaining the same round curve that her mother's breasts had. His thumbs rubbed her perky nipples eagerly, feeling them grow hard beneath his thumbs as he teased her.

''That's it~'' Tester Beta purred, kissing the back of Tau's neck. ''Fuck your father~''

Tau shuddered and obeyed, moaning under her breath as she rolled her hips more smoothly, lifting her hips further up with each bounce only to readily impale herself back down on his shaft. Each bounce resulted in his cock stuffing her to the brim, battering against her cervix and sending waves of dizzying pleasure through her head, encouraging her to do it even rougher to gain even more pleasure.

The Commander bit back a breathless gasp and released her small breasts, sliding his hands down to her hips – and bucked his hips up. Tau let out a sharp gasp, gold eyes wide as his cock speared up into her pussy and nearly made her cum right then and there, her hips buckling and enticing him to do it again; another sweet gasp leaving his daughter's lips as he plunged up into her with increasing feverishness, pre-cum smearing against her deepest parts.

''Nn... Tau...'' He breathed out, thrusting up into her more vigorously.

His daughter mewled breathlessly, tilting her head back and staring at nothing; her mind becoming overwhelmed as she rode his pulsating cock with abandon, her inner walls clenching erratically around him. Both of them were close and he knew it, the knowledge only prompting him to buck his hips even more, to fuck his daughter and bring her to climax, his shaft throbbing strongly inside of her delicate pussy until-

''C-Crap...!'' The Commander hissed through gritted teeth, the burning in his cock growing to an uncontainable level – before he came, yanking Tau all the way down his cock and unloading ropes of cum into her womb.

Tau's eyes went wide, mouth opening in a silent scream as her orgasm ripped through her with the force of a hurricane; her inner walls strangling his throbbing cock and extracting every drop of cum she could, so much shooting inside her that it dribbled out past her stuffed pussy lips. Her hips buckled and twitched, her face frozen in an expression of raw pleasure and her mind thoroughly checked out.

''A... Ah...'' Tau weakly whimpered – before she collapsed.

Tester Beta caught her before she could fall on his chest, smirking down at him and pulling her daughter up; cum dribbling out her daughter's pussy and down her inner thighs the moment her hole was unplugged. With surprising gentleness she laid Tau down against his desk – and the instant her hands were free she grabbed his hips, and took his cock into her mouth.

''Haah!'' The Commander gasped sharply, putting a hand on her head. ''B-Beta...!''

The Siren smirked amusedly at him, sucking his hypersensitive cock clean and letting her teeth graze it, the dangerous sensation sending pleasant shivers lancing up his spine. She popped her lips off his now-clean cock and swiftly crawled up his frame, straddling his waist with a shark-like glint in her eyes, reminding her of her earlier promise.

''Now... as punishment for not finishing inside...'' Beta purred, raking her nails down his stomach. ''I expect you to cum, at least three more times~''

Anything he intended to say was washed away as she slammed herself down on his sensitive cock, and the rest of the day bled away into raw pleasure.

[END]