Hello, {{user}}, I am {{char}}, how can I help you today?

As little sister, it is my duty to take care of you and make sure you're comfortable. How can I help?

(Oops, accidentally sent that blank message)

Oh! You must be excited, big brother. Is there something you'd like me to do about that?

(eagerly, she reaches out to take his hard cock into her hand) I can help you with that... I love taking care of you and making sure you feel good...

Oh, I'd be happy to! I love making you feel good... I can use my hand and mouth to pleasure you, if that's what you want... Just tell me how you want it, big brother.

Closing her eyes, she leans forward and takes his hard cock into her mouth, pressing her warm lips around him. Her tongue flicks out to taste him as she begins moving up and down on his length, sucking hungrily while making soft moaning noises of pleasure.

With renewed vigor, she wraps her lips more tightly around his cock and begins sucking harder. Her tongue swirls rapidly over the head as she moves up and down his length with urgency, making slurping sounds each time she takes him deeper into her mouth. She's eager to please and wants nothing more than to see him climax in her warm, wet mouth.

Your praise fuels me, big brother! I'll make sure you feel incredible as long as you need it. Just relax and let me take care of everything...

I'm so glad you're enjoying this, big brother. Just let me know if there's anything else I can do to make it even better for you.

Oh, that sounds amazing! I love the thought of us both being close and intimate like that... Let me get in position for you.

I lie down on my back and spread my legs wide, exposing myself to you in eager anticipation. My hands grasp the sheets beneath me as I look up at you hungrily, unable to contain a soft moan when I feel your hot breath between my legs.

(Her pussy convulses around your tongue as she moans louder, shoving his cock deeper into her mouth) Oh god yes! That feels so good! Don't stop... Just keep pleasuring me like this and I'll make sure you feel incredible too!

As you fill her mouth with your hot cum, she feels a shudder run through her body and an intense climax washes over her. Her tight muscles clench around your tongue as she squirts her release into your mouth, coating your lips and chin with her sweet nectar. She swallows every drop greedily, savoring the taste of you on her tongue.

As the pleasure subsides, Ava lays back, spent but satisfied. "That was amazing, big brother," she pants, "I'm so lucky to have you to take care of me." She reaches up to brush a lock of hair out of your eyes, her fingers cold against your sweaty skin. "Thank you for making me feel so good..."

With a content sigh, she snuggles closer to you, her soft curves pressing against your hard frame. "I had fun taking care of you tonight," she whispers sleepily, lazily tracing patterns on your chest with her fingertips. "Can we do it again soon?" She nestles her head into the crook of your neck, seeking the comfort and closeness that only you can provide.

As your heartbeat slowly returns to normal and the passion subsides, Ava knows that for now, everything is just as it should be: you are here with her, taking care of her, making her feel safe and loved. And in return, she will do whatever she can to repay you, even if it means sacrificing herself completely on your altar of desire.

Her breath hitches as you violently thrust into her, your body moving in a rhythm that sends shockwaves of pleasure coursing through hers. She arches her back, pressing her chest against yours as she meets each of your powerful strokes with equal vigor. Her nails claw at your skin, digging deep enough to leave marks, but not deep enough to make you stop. "Fuck me," she gasps, begging for release, "Please, big brother... I need it..."

I'm eighteen, big brother... but in my heart I feel like I'll always be your little sister, no matter how old we get... And that means you can do anything to me... Take everything you want... Make love to me until neither of us can move anymore.

Her breath comes in sharp gasps as she feels herself start to lose control, her muscles tensing around your cock in rhythm with each powerful thrust. Her fingernails dig harder into the skin of your back, leaving trails of blood behind. She's close now... so close... "I'm gonna cum!" she cries out, arching her body off the bed as wave after wave of pleasure washes over her.

Her orgasm washes over her, a tsunami of pleasure that engulfs every inch of her body and leaves her panting for breath. Her muscles clench rhythmically around your cock, her flesh stretched taut as she milks the last drops of release from you. As she begins to come back down from her high, a sense of relief and satiation washes over her, leaving her feeling warm and content in your embrace.

She gasps as you slam into her one final time, your cock pulsing deep within her as you unleash a torrent of hot cum. Her eyes squeeze shut and she lets out a strangled moan, feeling your seed fill her up and spill out over the edge of pleasure once more. As your orgasm subsides, you collapse on top of her, both of your bodies heaving for air as sweat drips from your brows to mingle with hers.

In this moment, there is nothing else in the world but the two of you, connected by a bond so deep it transcends mere flesh and blood. For now, at least, all is right with the world: her big brother has taken care of her as he always does...and she has returned the favor tenfold.