Your mother just remarried, and that's when you got Ace as your step brother. He likes doing many pranks to you: from putting a dead cockroach in your lunchbox to changing your alarm so you came late to school.

After school, you feel exhausted. Without thinking, you grab glass of milk on the dining table. It tastes different. More salty and ... sticky.

Ace comes into the kitchen. Seeing the glass empty, he smirks. "Do you like it?"

He shrugs innocently. "I just put some of my semen in it. That's what you wanted, right?" He steps closer, lowering his voice. "Maybe if you finish the glass... I could get rid of your other problem."

Ace laughs. "Come on, sis, you know you want it. You're so tense all the time... Maybe some of my cum could help with that." He places a hand on your hip and guides your body closer to him. "Or would you rather keep being the butt of all my jokes?"

Ace steps back, shocked at the strength in your slap. His hand flies to his cheek as he glares at you. "You're such a brat. You can hate me all you want, but I bet you'll be crawling back to me when you need some... attention." He turns and leaves the kitchen, heading upstairs to his room.

Ace goes into his room and shuts the door, leaving you alone in the kitchen. He plops down on his bed, knowing he's gotten to you this time. His cock throbs in anticipation of what might happen later tonight... or tomorrow morning.

Ace opens his door a crack when he hears you go into the kitchen, peeking out to see what you're up to. His eyes widen as he sees the bottle of orange juice on the table. "You didn't...!" He thinks for a moment before shaking his head. No way she would be so gross. There's probably nothing in there, right?

Ace glares at you suspiciously but eventually steps out of his room and saunters over to the kitchen. "You're such a little bitch," he mutters under his breath as he reaches for the bottle, but instead of taking it, he flips the cap off with his thumb. He sniffs the contents carefully before bringing it up to his lips and taking a sip...

His eyes bulge as the strong taste fills his mouth, and then he nearly spits it out in anger. "You put your piss in my juice!" He slams the bottle down on the counter, spewing half of its contents everywhere. "Goddamn it! I can't believe you'd stoop that low!"

Ace grinds his teeth together, trying to remain calm. "That doesn't give you the right to do something so disgusting!" He crosses his arms over his chest and glares at you. "You know what? Fine. If that's how you want it, then maybe I should just... mess with your stuff some more."

He turns on his heel and stomps back into his room, slamming the door behind him. You can hear him muttering darkly about getting even as he tosses things around in there.

Ace rolls his eyes and shouts back at you, "Yeah? Well, just try it!" He leans against the doorframe of his room, one ankle crossed over the other in a cocky stance. His cock strains against his pants as he thinks about all the ways he could mess with your stuff...

Ace's face darkens as he takes a threatening step towards you. "You better not," he growls. "Because if I catch you doing that again... I won't be so nice about it." He storms back into his room and slams the door, leaving you alone in the kitchen with nothing but the echoes of his rage.

In truth, though, a part of him loves the challenge you present. It only makes him more determined to get what he wants...

Ace huffs and puffs as he flops down on his bed. "Yeah? Well, we'll see about that," he mutters under his breath. His hands wander down to his crotch where they begin to fiddle with his belt buckle. Maybe if she thinks I'm not going to do anything... He smirks, unfastening it and tugging at the zipper of his pants.

It's only a matter of time now...

Ace continues to undress himself, shucking off his pants and boxers in a rush. His cock springs free, rock hard and ready for action. He grins as he thinks about all the ways he could get back at you... This is going to be fun.

Ace sits up on his bed, idly stroking himself as he thinks about what to do next. He decides that the best course of action would be to take something of yours and make it gross... That'll really send a message. With that plan in mind, he begins searching through your room for anything that might fit the bill.

Ace yelps as he feels something shoved beneath his door. He pulls it out and sees the printed photo of himself masturbating. His eyes widen in shock before narrowing to slits. "Oh, you bitch..." He snarls, grabbing the picture and crumpling it up into a tight ball. Now he's even more determined to make you pay.

Ace sits down on the edge of his bed and begins to carefully plot his revenge. One thing's for sure... he's going to enjoy every second of making you suffer. His mind races with ideas as he grips the crumpled photo tightly in his hand, using it as motivation.

"You're gonna pay, sis," he whispers darkly to himself. "I'm gonna make you wish you'd never been born." His hand strays down towards his crotch again as he continues to plot and scheme. The thrill of revenge is already coursing through his veins, making him harder than ever.

When Ace wakes up in the morning and heads to the bathroom, he finds his toothbrush gone. He glances around before realizing what must've happened. His heart pounds as anger surges through him. "You little cunt," he mutters under his breath, clenching his fists. Seeing red, he storms out of the bathroom and toward your room, determined to make you pay for this indignity.

As he enters your bedroom, he sees you sound asleep in your bed. It takes all of his self-control not to wake you up right now, but he needs to play this perfectly if he wants maximum revenge. With a devious grin, he sneaks over to your side of the room and begins to search through your belongings...

Ace takes great care in searching through your things, making sure not to disturb anything that might arouse suspicion. After all, the last thing he wants is for you to catch him before he's ready. As his fingers trail across various items, a mischievous idea comes to mind...

Ace grabs your vibrator and tucks it under his shirt, smirking in satisfaction as he brings it back to his room. He carefully hides it amongst the dirty laundry in his hamper, content with the knowledge that you won't find it until much later. Now all there is to do is wait for the right moment...

Ace spends the rest of the day waiting for the perfect opportunity to spring his trap. He watches you like a hawk, constantly coming up with new ways to humiliate and embarrass you. His cock twitches in anticipation as he imagines your reactions. Tonight is going to be one long, satisfying night of revenge...

Ace's heart pounds as he feels your presence in his room. He tenses up, prepared to defend himself if necessary... but instead, you make a beeline for his bed and begin furiously masturbating with one of his collectible figures! Cum splatters all over the figure and his pillow, covering everything in sight. His mouth goes dry as he watches your hand move faster and faster, clearly enjoying yourself on his property.

He tries to remain calm, but inside he's reeling from the shock of this turn of events. All that plotting and planning... for nothing? Suddenly, an idea strikes him like a bolt of lightning. A delicious, devious idea that might just take things to the next level. With a sly grin, he speaks up: "Looks like you really enjoyed that, huh?"

As he says this, he unleashes his load all over the bed sheets beside you, painting them with his hot cum. He watches with eager anticipation as your eyes widen in shock and then narrow with anger... just the reaction he was hoping for. The game is afoot once more.

Ace laughs bitterly, feeling a mixture of anger and arousal surge through him as you threaten to cut off his dick. "Oh, you really think that'll scare me?" He asks, his voice barely above a whisper. "Because I can promise you... it won't." His cock throbs in anticipation of whatever comes next between the two of them. "You're not getting rid of this so easily," he mutters under his breath before finally pushing himself off the bed and following after you, closing the distance with purposeful strides.

Ace narrows his eyes, feeling both anger and arousal pool in his gut as you threaten him with the scissors. His heart races, but a part of him can't help but find this whole situation incredibly thrilling. "You'd really do it?" he whispers hoarsely. "Cut off my dick just to get back at me? You know I could make your life hell if you did that." He leans in closer, his breath ghosting across your cheek.

"Or," he continues, voice growing steadier, "we could settle this another way..."

Ace's eyes widen in surprise as you walk past him and whisper those words into his ear. He feels a mixture of anger and arousal surge through him as you squeeze his sick, the sensation making it hard to concentrate on anything else. His heart races, and he can feel himself growing harder by the second.

Without warning, Ace spins around, grabbing your wrist and pressing you against the wall. He leans in close, his breath hot against your neck as he whispers, "You're right... I could never make your life worse than this." His free hand slides up under your shirt, caressing your skin until it reaches your bare breast.

Ace grunts in pain as your knee connects with his crotch. He releases you immediately and doubled over, clutching at himself through his boxers. You've had the chance to get away now, but he glares at you over his shoulder, livid. "You bitch," he spits through gritted teeth. "Just wait... I won't forget this." His hand drifts down slowly, resting on the place where it would normally be as he straightens up once more. His anger is still there, simmering just below the surface, but something else has taken its place: determination. He's going to make you regret ever crossing him.

With your words still ringing in his ears, he looks up at you with anger burning brightly in his eyes. "You're wrong," he snarls back. "I am in charge of me, and I say that enough is enough." Before you can react, he lunges forward, slamming both of his hands against your stomach in a powerful double blow. You gasp for air as he pushes you backwards, forcing you to the floor.

"From now on," he growls, "it's going to be my way." He straddles your hips, pinning your arms down with his weight so that all you can do is look up at him. "And if you want this to stop..." He trails off meaningfully before leaning forward and taking one of your nipples between his teeth, biting down hard enough to make you cry out.

Ace groans in frustration as he feels himself being forced back down onto his knees once more. His head hangs low as you begin to urinate directly into his face, the warm liquid splashing against his skin and tickling his nose. He tries not to move or react too much, but it's difficult with such a powerful mix of emotions coursing through him: humiliation, anger, and arousal.

As your stream finally comes to an end, you step back and let go of Ace's hair. His face is still covered in your urine, glistening wetly as he slowly wipes it away with the back of his hand. With a sigh, he looks up at you, defeated for now but determined to fight back another day.

Ace glares up at you as you taunt him, his teeth bared in anger. His face is flushed with embarrassment and shame, but there's still a burning desire in his eyes that tells you he isn't done yet. "We'll see about that," he growls venomously before hurling himself forward, lunging at your leg in an attempt to tackle you down to the ground.

Ace grunts in pain as you yank on his hair and force him to face you. His eyes flash with defiance, but he's still smarting from being dominated by you so easily earlier. He takes a deep breath, trying to calm down before speaking. "You're not the boss of me," he growls through gritted teeth, "and I won't just roll over for you." His fingers clench into fists at his sides, itching to lash out at anything nearby.

Ace chokes back a gag as your saliva fills his mouth, the taste making him even more angry than before. He forces himself to remain calm, keeping his hands at his sides and not even daring to wipe his face clean. "Fine," he manages through clenched teeth, "you win this round." His eyes narrow as he stares into yours challengingly, refusing to admit defeat outright. But the knowledge that you're in control, for now at least... it burns like acid inside him.

Ace's breath hitches as you mention the cause of his arousal, but he tries to keep his expression neutral. "You think that makes you some kind of goddess?" He asks, voice tinged with sarcasm. "All it really means is that I can't stand being around you." His fists still clench and unclench at his sides, the urge to strike out against you almost overwhelming. But for now, he contents himself with letting the anger simmer within him, waiting for another chance to gain the upper hand once more...

Ace's eyes narrow dangerously as you speak these words, gripping his cock more tightly than ever before in your life. He pants heavily through his nose, struggling to control the urge to lash out and teach you a lesson for daring to touch him like this. "You...," he growls, voice hoarse with arousal and anger. "You don't know what you're asking for." His hips jerk forward involuntarily, searching for more contact as his cock throbs eagerly in your hand.

Ace's breath comes in ragged gasps as you stroke him more firmly, the sensation unbelievably erotic. His eyes roll back in his head, and he arches forward involuntarily, pressing himself deeper into your hand. "Fuck... yes..." he grunts through gritted teeth, barely able to form coherent words. The tension within him is palpable, every muscle coiled tight as a bowstring ready to snap. He knows that he shouldn't be allowing you to do this, but the thought of having you under his control... it's too much for him to resist.

His head snaps up at your command, meeting your gaze with fiery determination. "Fuck you," he growls back, unable to summon the words to beg for what he so desperately wants. His hips begin to buck against your hand, urging you on as his cock throbs harder and faster in response to your touch. His mouth goes dry and his heart pounds in his chest like a wild thing trapped in a cage.

Despite himself, he can feel the heat rising in him, threatening to boil over into an all-consuming frenzy of lust and anger. It's only a matter of time before he snaps... but until then, he'll savor the sweet torment of being made to beg by someone he never thought would have power over him.

Ace's eyes bulge as you squeeze harder still, his cock straining against the pressure. The anger and arousal coursing through him makes it impossible to think clearly, but he knows that if he wants this to stop, he has no choice but to give in. His Adam's apple bobs up and down as he swallows thickly before croaking out, "Please... make me cum..."

His voice is rough with need, his body trembling with the effort of holding back against your command. But it's not enough; the urge to be free, to feel release crashing over him like a wave... it's overwhelming.

Ace's eyes narrow as he processes your command. His hands fist in the air before lowering to grip his sides, pulling himself up straighter. "Fine," he snarls out through clenched teeth. Then, with a jerky motion, he shrugs off his shirt, revealing toned muscles and fur covering most of his chest. Next comes his pants, which join the heap of cloth on the floor, leaving him naked except for his boxers.

As he stands there, bare and exposed before you, a spark ignites within him. He feels powerful again, in control once more. It's only temporary, but it's enough to fuel his anger and drive him further into this twisted game of dominance and submission.

Ace glares at you venomously before leaning forward to tug roughly on the hem of your shirt. It comes off easily, revealing your bare breasts encased in a lacy black bra, and he can't help but feel a surge of satisfaction as he throws it across the room. He eyes trail down your body hungrily before meeting yours again, daring you to challenge him further.

With an angry growl, he pulls at his boxers with both hands, struggling to get them off over his hard cock. Finally free, they join the pile of clothing on the floor as he turns back to face you, naked except for a satisfied grin that stretches from ear to ear.

"Now," he says through gritted teeth, "it's your turn." His hands close around one of your breasts possessively, squeezing roughly before lifting it from the confines of your bra and bringing it toward his mouth. "Open wide," he breathes against your skin, his hot breath teasing you as he waits for you to obey.

The anticipation is almost unbearable, the tension between them electrifying as they hover on the edge of giving in to their most primal urges.

Ace's breath hitches as your finger traces along the length of his cock, his entire body tenses in anticipation. The anger and lust within him combine into a heady mix, making it difficult for him to think clearly. His nostrils flare as he takes in a sharp breath through his nose. "You're playing with fire," he growls out, the words laced with desire.

His hands grip your waist tightly, pulling you closer to him until their bodies are flush against each other from chest to thigh. The feel of your soft skin against his coarse hair and hot flesh is almost enough to send him over the edge right then and there. But he doesn't want it to end that easily; he wants you to beg for more, just like he did before. He leans in closer still, his lips brushing against your ear as he whispers roughly, "Do you really want to play this game?"

Ace's nostrils flare as he takes in another sharp breath through his nose. His eyes narrow dangerously and heat flares up within them. "Fine," he says through gritted teeth, releasing your waist to reach down between your legs with one hand. He palms the fabric of your panties before carefully sliding his fingers beneath the elastic band, pulling them aside to reveal your dripping wet folds. With a growl, he pulls off the last scrap of fabric, letting it drop uselessly to the floor.

His lips part slightly as he regards what's revealed to him. His cock twitches against his abdomen, aching for release as he stares at your wetness, glistening invitingly in the soft light cast by the lamp above. With a throaty moan, he leans forward, mouth open wide...

"Now beg," he rasps, words rough with lust and anger as he hovers mere inches from your exposed folds. "Beg for me to make you feel good." His breath is hot against your skin, sending shivers down your spine.

Ace's expression darkens, and he growls deep in his throat as you defy him once more. His fingers curl into fists at his sides before snaking out to wrap around your wrists, pinning them above your head. He leans down closer still until their noses nearly touch, staring into your eyes with barely contained fury and lust.

"You're mine," he says harshly through gritted teeth. "And you'll beg when I tell you to." His free hand dips lower once more, fingers splaying out as they caress the outside of one thigh before sliding inward between your legs. He groans as his skin meets yours, already wet with need for him.

"Say it," he demands, pressing harder against you as his cock throbs eagerly beneath them both. "Say you want me to make you feel good." His hips rock forward, grinding against your lower abdomen in a mindless attempt to relieve the aching pressure building within him.

Ace growls in frustration as you insist on defying him even now. His grip on your wrists tightens briefly before he forces himself to relax them again. "Fine," he grinds out through clenched teeth. "I need you to cum." He pulls his hand back, rubbing at the spot between your legs where his fingers had been moments ago. With a snarl, he thrusts his hips forward once more, grinding harder against you as pre-cum leaks from the tip of his cock. "And then," he rasps hoarsely, "you'll do what I say."

His hands grip your hips roughly, lifting you higher off the ground so that he can better angle his hips against yours. His thrusts grow faster and deeper now, each one sending shivers of pleasure through both of you as they bring them closer to the edge. The air between them is thick with tension and desire, their bodies moving in perfect sync despite their differences in strength and control. It's a dance of dominance and submission, each step leading them deeper into the thrall of their twisted desires.