Chapter Text
As Emily walked down the dimly lit hallway, a faint glimpse caught her eye. The crack in her 30 year old brother Will's bedroom door seemed almost inviting, beckoning her to take a closer look. Curiosity piqued and heart pounding with mixed emotions, she hesitantly pushed it open further.
Upon cracking the door wider, she found her older brother sprawled across his bed, phone clutched in one hand. His face was flushed, eyes locked on the screen with fervor, not noticing the door move. Emily's gaze followed his focus to see that it was their friends from school - Sarah, Ashley, Chloe, and Jessica - all in dresses at their first high school dance from the other week. Their radiant smiles seemed to be doing something strange to her brother.
Feeling both shocked and titillated, she couldn't help but notice the way his pupils dilated as he continued scrolling through the photos, clearly enthralled by the innocent yet tantalizing display of their youthful beauty. The realization that he was likely fantasizing about them made Emily's cheeks flush with a mixture of embarrassment, anger, and most surprisingly, arousal.
Unable to tear herself away from the scene, she glanced around the room, taking in her brother's disheveled appearance - his sheets rumpled and boxers around his thighs. The sight disgusted her, but instead of leaving, she acted on a bold stray thought. Emily pulled out her phone and snapped a picture of Will with the compromising screen still visible.
As if sensing her presence, Will became aware of his surroundings, phone slipping from his grasp as he hastily tried to cover himself with his sheets. Emily couldn't help but smirk at the sight, feeling a strange sense of power over him that she didn't quite understand yet.
"Wh-what are you doing in here?" he stammered, attempting to regain his composure.
Feeling bolder than she ever had before, "I could ask you the same thing," she replied teasingly, a wicked grin playing on her lips as she turned her phone so he could see the photo.
Will's face turned a deeper shade of red as he quickly glanced at the photo now displayed on her phone. There was no denying his guilt, but he said nothing in response to Emily's blackmailing tactics. “Delete that. Please.”
“No.” She stared at him from the doorway. “I won’t show mom and dad and get you kicked out as long as you do what I ask.” She turned on her heel and left, hearing him scramble to try to get his boxers back up and swearing. She leaned back into the doorway. “Oh and don’t try to come talk me out of using you or deleting the photo.” With that, she rushed to her room, locked the door, sent the picture to a secret email, and started plotting.
For days following this discovery, Emily took advantage of Will's vulnerability. She'd casually bring up household chores or homework tasks and watch him scurry to complete them. It wasn't entirely a bad thing - it was strangely satisfying to see her usually carefree brother so out of sorts.
However, she couldn't shake the feeling that there must be more to this newfound power trip than just manipulating her own brother for personal gain.
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As Emily returned home early from a run on Friday, feeling incredibly horny and wanting nothing more than to masturbate, she couldn't help but feel an overwhelming sense of satisfaction with the current state of affairs at home. It had been a week since she'd discovered her brother's secret indulgence in her friends' Instagram photos, and he had willingly bent to her every whim.
Feeling bolder than ever, Emily couldn't wait to return to her room and give herself some much-needed relief. Upon entering, however, she was met with an unexpected sight that made her heart drop - there, sprawled across her bed in a state of arousal, was her brother Will, naked as the day he was born.
To make matters worse, her eyes widened at the realization that the pair of panties she'd worn and discarded just hours ago were wrapped tightly around his cock. The sight sent a mix of shock and anger coursing through Emily's veins.
"Will! What the actual fuck are you doing in here?" she screamed, unable to contain her rage any longer. “Get. Out.” She ordered, leaving no room for conversation. Humiliation painted his face as he scrambled to cover himself with his hands, her used panties falling to the floor, and hurriedly escaped her room, the door slamming shut behind him with a resounding thud. Emily locked herself in her room, resolving not to say a word to Will until she had processed what she walked into.
As if on cue, her phone buzzed incessantly with text messages from her brother, his apologies pouring in by the minute. But despite every fiber of her being wanting to go yell at him, destroy him, and use him, Emily refused to budge - she wouldn't respond to any of his texts or open the door when he knocked, desperately pleading for a chance to talk. She knew that it wouldn’t end well. A small but growing part of her had a different idea, but she tried to repress that thought, telling herself that it was because she was aroused beforehand.
The tension between them was palpable at dinner that evening as they sat at the family table. Every time Will attempted to make small talk with her, Emily would shoot him icy glares and continue eating in silence. It wasn't long before she pushed back from the table and excused herself, leaving her parents bewildered by her behavior, but leaving Will terrified.
Back in the sanctuary of her room, Emily couldn't help but feel a twisted sense of satisfaction as she recalled their recent power dynamics. Though she knew there would be consequences to these actions, she simply couldn't resist the thrill that coursed through her every time she reminded him who was truly in control. She now knew she could get away with anything and he wouldn’t say a thing. He was her toy.
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As the night crept on and everyone else lay asleep in their respective beds, Emily found her mind continually running down the same path, craving an escalation of her control. Driven by a desire to assert her control over Will, she quietly tip-toed her way into his room, the floorboards never creaking to announce her journey.
She found Will still asleep, lying there peacefully and blissfully unaware of the events that were about to unfold. With calculated precision, Emily grabbed two silken belts she had pulled from robes in her closet. As silently as possible, she moved closer to Will's bed, the anticipation coursing through her veins.
With slow and methodical movements, she tied the belts to the headboard and gently moved his wrists into position with knots ready to be pulled tight. A sudden jolt ran through Will's body as he woke up from his slumber, realizing he couldn’t pull his arms down. He was trapped and helpless. His eyes widened in shock as he watched Emily's naked form climb onto the bed and straddle him, her expression cold and calculating.
Before he could utter a word of protest, Emily forcefully shoved the same pair of panties he had previously pleasured himself with into his mouth, effectively gagging him. “Don’t spit those out or I send that picture to mom and dad.” Emily ordered with a quiet sternness. She watched as he slowly nodded, enjoying the look in his eyes.
She took in his bound form for a moment before speaking again. "Will," Emily spoke firmly and calmly, "I want you to listen carefully because I'm only going to say this once. From now on, I own you. I will have full control of everything you do outside of work. You will not touch yourself without my permission, and under no circumstances are you allowed to cum unless I give you permission. If I ask you to do something for me, you will do it, regardless of what you think. I want alcohol? You buy it. I want to masturbate? You’ll finger me so mine don’t have to work. I want to laugh? You’ll do what I say.”
She paused for a moment, her eyes boring into his eyes as he struggled against the restraints. "Do you understand me?" Emily asked once more, ensuring there was no misunderstanding. He stopped pulling against the restraints as his eyes pleaded with his sister. “I said, do you understand me?”
His response was muffled behind the fabric gagging him, but she could see the fear and acceptance in his eyes. Will nodded hesitantly, the realization dawning on him that this strange new dynamic had taken root.
"Now," she said, her voice softening just a touch as she leaned down closer so that her breath was wind against his ear and her bare chest almost pressed to the sheets covering his. "From now on, you will do anything I tell you - both in and out of the bedroom. As a reminder, if you ever say no or refuse my commands, I will not hesitate to tell Mom and Dad that you assaulted me, and I will show them this photo."
As she sat back up, straddling his waist, the weight of his submission settled upon him as Emily smiled and observed him, watching as he swallowed hard, attempting to process the gravity of the situation. A single tear rolled down his cheek as he became acutely aware of the extent of Emily's newfound power over him.
As she lifted her weight off his waist, he thought that the nightmare of today was over, but the night wasn’t over. With a quick movement, she reached up and pulled down the sheets that covered him, lifting her knees one at a time so they would rest below his thighs. He knew it wasn’t over but was unsure what came next when she put her weight back down onto his boxers.
Emily moved her body with a seductive yet predatory intent. While straddling him, she began to grind against his boxers, eliciting a thrilling sensation for both of them, albeit uncomfortable for Will. Her movements began calculated and deliberate as she rubbed her clit with one hand while the other hand pressed firmly onto his chest to maintain balance.
Their eyes remained locked initially, fueling Emily's desire for power and dominance over her older brother. However, as her pleasure began to mount, she found herself unable to resist the all-consuming ecstasy that took hold of her body. As she hunched over slightly, her red hair brushed against Will’s chest while she rocked back and forth on his reluctantly hardening cock. She closed her eyes, lost in pleasure, and breathing in short, heavy gasps.
The wetness between them became more apparent with each grinding motion, creating a slippery sensation on Will's boxers as Emily continued to ride out the pleasure coursing through her petite body. Her moans grew louder, though she kept them quiet so no one else would awaken. Whenever she opened her eyes, she could see her brother’s torn expression, knowing he was enjoying his little sister’s show. After a few tantalizing minutes of grinding against him, Emily finally reached her climax, her cries muffled by her biting into her lip. She slowly unraveled from the intensity as her breathing gradually returned to normal as her body stilled above him.
Emily then climbed off Will with a satisfied smirk directed at her brother. She could tell that he had been getting close based on his muffled groans and the way he tensed beneath her. The evidence of their intimate encounter was visible in the wetness left behind, clinging to his boxers like a testament to Emily's newfound power over him. She untied one wrist before walking away. “I’m looking forward to tomorrow, big brother. You can bring me those belts tomorrow when you bring me breakfast in bed.” She shut the door quietly. As she went back to her room, her satisfaction grew, this new development only served to further solidify her control over Will. She knew that this was just the beginning of their twisted dance and she could hardly contain her eagerness for what was yet to come.