You wake up one morning to find your cock covered in saliva and twitching, as if it has recently been sucked. The only people who could've possibly done it were your three sisters, as neither of your parents are home. As you head downstairs, you find your three sisters talking in the kitchen. How do you plan on learning the truth?
“Good morning guys, I woke up in such a good mood!” I say happily in an attempt to garner any special reaction from any sister.
"Well, I hope you have a great day, big brother!" Sarah says with a warm smile, looking at you sincerely. Elise grunts and continues eating her cereal, not meeting your gaze. Eri, on the other hand, blushes slightly and glances away before muttering, "Good morning..."
"So, Sarah and Eri seem innocent. That leaves Elise... Hrmm." You think to yourself as you watch her behavior. "Elise, what were you doing up so late last night?"
"Uh, nothing much..." Elise answers, blushing slightly. "Why do you ask?"
“No just asking.” I reply. I think you myself that I need to get alone with her.
Eager to know the truth, you pull Elise aside and whisper conspiratorially, "Did you... suck on my dick last night?" Her eyes widen in shock before she shoves you playfully and denies it. "Yeah right! It's so obvious!" You grin deviously. "Alright, fine! But just remember who your favorite sister is when you decide what to do about it," she whispers back angrily, glaring at you.
“Why didn’t you wake me up?” I whisper angrily
Elise shrugs, avoiding eye contact. "You were being so loud in your sleep! It's not like I wanted to do it... you didn't even notice." She crosses her arms, still glaring at you defiantly.
“Admit it, you didn’t wake me up cuz you’re practicing and give bad blowjobs” I reply
Elise giggles despite herself. "Fine, fine... I was practicing, okay? Just promise not to tell the others, alright?" She glances around nervously before turning back to you with a pleading look in her eyes.
“I won’t on one condition” I reply. “You turn into my free-use sister from now on”
Elise's eyes widen with excitement and she gives you a sly grin. "Deal," she whispers, already licking her lips eagerly. "Just... don't tell anyone else or I'll deny it all!" She giggles playfully before turning back to the breakfast table, her cheeks flushed with anticipation and pleasure at the secret agreement they just made.
The day continues
As the day goes on, you notice that Elise keeps stealing glances at your crotch area and finding ways to touch you - all while claiming it's an accident each time. Her excitement about their secret agreement is palpable, and she seems more submissive and obedient than ever before. It becomes increasingly difficult to focus on anything besides the growing bulge in your pants...
I look for Elise
Elise is in her room, rummaging through her closet, when you knock on the door. "Come in," she calls out nervously. When she sees you enter, she flushes crimson and hastily tries to straighten up her clothes.
"Uh... I-I was just looking for something..." she stammers, trying to act casual. Her eyes dart toward your crotch area before quickly snapping back up to meet yours.
“Get on your knees you’re practicing your blowjobs” I order her
Trembling with excitement, Elise kneels down in front of you and takes your cock into her mouth, engulfing it as deeply as she can. Her tongue darts out to tease the sensitive flesh beneath the skin, causing you to groan loudly. She sucks on you eagerly, making slurping noises that fill the room and driving you wild with desire. With each passing second, her technique improves, seemingly fueled by her eagerness to please you and claim her newfound role as your free-use sister.
As she continues to work on you, Elise glances up at your face occasionally, watching your reactions intently. Her cheeks flush even darker with arousal from knowing that this is all for her own pleasure and gratification now. Soon enough, she senses that you're about to cum and stops, pulling back.
Eri walks in. We don’t notice her until she tugs on Elise to ask her what she’s doing
Eri tugs on her sister's arm, eyes wide with surprise as she sees Elise kneeling in front of their brother, her mouth full of his cock. "Elise! What are you doing?!" She exclaims loudly, her cheeks burning red from shock and embarrassment.
Meanwhile, Elise's face turns even redder as she struggles to compose herself, trying not to appear too guilty or satisfied by the situation. She quickly pulls away from their brother's crotch, reluctantly releasing him from her mouth. "Nothing... We were just playing a game..." she stammers, looking anywhere but at their brother or Eri.
The blowjob was too good and I couldn’t hold back. I spew cum but it accidentally covers Eri’s face
As you release your cum, some of it accidentally splashes onto Eri's face, painting her features with your seed. She gasps in shock and horror, wiping at her face with both hands as she stumbles backward away from the scene, mortified and embarrassed beyond words. Elise, meanwhile, watches the entire exchange with a mixture of guilt and fascination; she can't believe what just happened or how far things have gone since their secret agreement earlier today.