After a long, tense moment, Sona finally spoke, her voice barely above a whisper. "Only... only this one time, Nee-san."
"Yeah," Serafall said.
Then Sona came close to Alex, gave a pinch in the arm, and looked at him.
"What did I do?" He thought to himself. He couldn't continue on the thought as Serafall already started to undress him.
Serafall's eyes sparkled with triumphant glee as Sona hesitantly agreed, her cheeks flushed a pretty pink. She couldn't contain her excitement, a delighted squeal escaping her lips as she clapped her hands together.
"Yesss! Oh, this is going to be so much fun; just you wait and see!" Serafall crowed, bouncing on her heels. She immediately set about stripping off her own clothes, tossing them carelessly to the floor.
In a matter of moments, Serafall stood before them in all her glory, clad in nothing but a lacy black thong and a matching push-up bra that barely contained her ample bosom. She struck a provocative pose, one hand on her hip as she smirked at Alex and Sona.
Turning to Alex, Serafall began to undress him with eager, roaming hands. She tugged his shirt up and over his head, tossing it aside before attacking his belt and fly with single-minded determination.
As she worked, Serafall leaned in close to murmur hotly in Alex's ear. I can't wait to see this big, beautiful cock of yours in Sona's pussy."
"You are taking dirty, Serafall," Alex said.
Serafall licked her lips, her voice a low, seductive purr. "And don't worry about So-tan here. She might act all prim and proper, but I know she's just dying to feel you inside her. Aren't you, baby sis?"
"Yeah, I know that already, so stop making me feel weird." Alex said.
Serafall shot Sona a wicked grin over her shoulder before turning her attention back to divesting Alex of his remaining clothes. In a matter of moments, he stood before them both, his impressive erection bobbing against his stomach.
Slowly, Serafall sank to her knees before Alex, wrapping one hand around the thick base of his cock. She licked her lips as she admired his impressive size and girth.
"Mmm, even better than previously; it must be because So-tan is watching." She purred, giving him a slow stroke from base to tip. A bead of precum emerged from the swollen head, and Serafall leaned in to lap it up with a delighted moan.
Delicious~
Turning to Sona, Serafall crooked a finger at her sister, beckoning her closer. "Come here, So-tan." Serafall grabbed Sona's wrist and yanked her forward, pulling her to stand beside Alex. Sona gasped, her cheeks burning crimson as she took in the sight of her sister kneeling before Alex's intimidating erection.
"Look at what a big, strong man you've caught, So-tan! I bet you're just aching to feel him stretch you open, filling you up so deep and full~" Serafall giggled wickedly, giving Alex's cock another slow pump.
She looked up at Sona with a mischievous grin, her eyes glinting with wickedness. "Go on, baby sister. Don't be shy now. Put your hand on it. Feel how hard he is, how much he wants you~"
"You don't need to teach her that; she already knows how to pleasure me." Alex said.
"Shut up, Alex-chan. I, as a big sis, need to pass my knowledge to her." Serafall said.
Serafall guided Sona's trembling hand to wrap around Alex's thick shaft, helping her give him a tentative stroke. Alex groaned at the dual sensation of their hands on his sensitive flesh, his hips jerking forward slightly.
Emboldened by his reaction, Serafall encouraged her sister to stroke him faster, more confidently. "Yeah, just like that, So-tan! Work that big, beautiful cock. Get him nice and slick with your pretty hands so he can slide into your tight little cunt like butter~"
Serafall's vulgar words made Sona flush an even deeper shade of red, but she didn't pull her hand away. Instead, she found herself falling into a rhythm, stroking Alex's impressive length with growing enthusiasm.
As Sona worked Alex's cock, Serafall hooked her fingers into the waistband of her thong and slowly dragged it down her long, toned legs. She kicked it off to the side, now fully nude before them. Her bare pussy glistened with arousal, the pink folds slick and swollen with need.
Serafall pressed herself against Alex's side, her heavy breasts cushioning his arm as she reached down to spread her dripping slit open invitingly. "Well, what are you waiting for, Alex? Don't keep my baby sister waiting too long. I want to watch you stuff that pretty pussy full of hard, thick cock. I want to see you make my dear So-tan scream on it~"
She looked over at Sona with a wicked grin, her eyes blazing with lust and sisterly pride. "Go on, baby sis." She licked her lips as she watched Sona hesitate, her sister's cheeks flushed a deep scarlet.
She could see the conflict in the younger girl's eyes—the war between her ingrained modesty and the growing, undeniable desire sparked by Alex's presence and her own sister's brazen encouragement.
"That's it, baby girl," Serafall purred, her voice low and seductive. "Just let yourself feel it. Let yourself want it. You know how good it's going to feel to have Alex's big, hard cock stretching out your tight little cunt. Filling you up in ways you've never experienced before."
I'm feeling like instead of Leviathan, Serafall is better suited for Asmodeus. Alex thought to himself.
Serafall reached out to cup Sona's burning cheek, her thumb brushing over her sister's plump bottom lip. "I want to watch you suck him first, though. I want to see those pretty lips wrapped around his thick shaft as he fucks your mouth. Think of it as a preview of what's to come."
She turned to Alex with a wicked grin. "Go on, stud. Feed my baby sister that gorgeous cock. Show her what she's been missing out on. And don't forget, I want to see her choke on it as you force your way down her virgin (she is not) throat. Make her gag and sputter, but don't stop. Keep going until her nose is buried in your pubes and her chin is slick with spit. That's how you know you're doing it right!"
Serafall licked her lips in anticipation, a hand drifting down to rub tight circles over her aching, dripping slit. Her hips undulated in time with the filthy words spilling from her mouth, putting on a show for both Alex and her blushing sister.
Serafall's eyes blazed with lust and sisterly pride as she gazed at Sona, a wide, wicked grin stretching across her face. So what do you say, baby sis? Ready to give in to your deepest, darkest desires?"
~~~
You can join my Patreon for 3$. Around 240+ advanced chapters on my Patreon. I posted some exclusive NFSW on each R-18 chapter for you to enjoy.
Support me through my Patreon. It would be a big help
Support me:
patreon.com/BlackBolt517