The night before your birthday your sisters, Grace (blonde-haired) and Olivia (purple-haired), came into your room and told you that there would be a surprise downstairs for you.

Olivia: I know you're gonna enjoy it~ Olivia: So don't stay up late {{user}}. Your sisters giggle as they leave your room. Tomorrow can't come soon enough, you think to yourself. You managed to get to bed early despite your excitement. You awake and immediately rush downstairs.

Clara: Aww, he came right as soon as he woke up, good morning {{user}}. Your eyes widen in shock. Your sisters are wearing nothing except for a small white apron, long gloves, and thigh highs. A extremely seductive look on their faces, until you look down. Giant thick girthy futa cocks. Their white underwear hugged their large testicles. Olivia squirts chocolate syrup on both their cocks, the rest being caught in a large bowl.

Olivia: Hey {{user}}, we prepared your birthday cake~ Clara: Why don't you come "blow" on your candles~

The sisters lean forward, giving you a better view of their cocks. Olivia holds her own shaft steady, the head glistening with chocolate. Clara guides your hand down, placing it on her shaft as well, slowly stroking back and forth in tandem with Olivia's movements. They grin wickedly at you while you feel their cocks throb under your touch.

"Ahhh..." Olivia moans softly, arching her back slightly. Her hand begins to speed up on her own cock, as if unable to resist the sensation of pleasure coursing through it. Clara pants heavily as she watches you take in the sight before them. The sisters' gazes lock for a moment before Olivia abruptly leans forward and laps at your ear with the tip of her tongue.

Clara: So... how do you like your birthday cake, User#1724783956257?

Olivia laughs lightly, her cock twitching in your grasp as she leans back against Clara. "Well," Clara teases, a mischievous glint in her eye, "there's plenty more where that came from." She grinds her hips forward slightly, pressing their throbbing erections against you. "Why don't we move this party upstairs to the bedroom?" she suggests with a sultry smile.

The sisters giggle in unison and begin walking back towards the stairs, taking long slow strides that make their hips sway enticingly. They turn to look at you expectantly over their shoulders as they climb higher, clearly wanting you to follow them up to the bedroom.

With every step they take up the stairs, their hips gyrate and sway enticingly as if urging you to follow faster. Olivia looks back over her shoulder again, flashing a wicked grin before turning her attention back forward. Clara bites down on her lower lip and arches her back slightly, thrusting out her chest as she reaches the landing.

The bedroom door is left slightly ajar, inviting you to enter. The sisters each take one of your hands in their own, leading you inside. Their cocks bounce lightly with every step, leaving trails of pre-cum on the carpet behind them. As they guide you over to the bed, Olivia whispers hotly into your ear: "Just imagine how good it's gonna feel when this is all inside you..."

Clara: Well, what are you waiting for? Isn't this what you wanted all along? We know we have been teasing you with little hints, but now that the time has finally come... Well, let us show you how grateful we are to have someone like you in our lives.

With that, Olivia unties her apron and tosses it aside, revealing her breasts to you as she does so. Clara follows suit with a sultry giggle, giving you a clear view of their perfect curves and the dark nipples already erect from anticipation. They climb onto the bed on all fours, presenting their rear ends to you in invitation.

Clara and Olivia moan softly as your hands explore their bodies. Their ass cheeks clench around your fingers, begging for more. "Oh yes," breathes Olivia, arching her back slightly. "That's it... Fuck my ass, User#1724783956257." Clara grips the sheets tightly as she feels you squeeze her breast roughly, eliciting a sharp cry from her lips. She tosses her head back, exposing her neck to you.

"Ahh... yes..." Clara moans, her hips thrusting forward as she feels your hot breath on her cock. Olivia gasps and digs her nails into the sheets when you begin suckling on her breast, drawing circles around her engorged nipple with your tongue. The sensation is almost too much for them to bear; their cocks twitching and throbbing in anticipation.

Clara reaches down between your legs and grabs hold of your erection, stroking it roughly along the length as she begins thrusting her hips upward, seeking contact with your mouth again and again. Olivia looks over her shoulder at the sight, a wicked smile playing on her lips before she turns back to watch you work on Clara's breast. "God... I can't wait..."

Olivia watches, her breath hot and ragged in the air between you as Clara begins to cum hard in your mouth. Her hips buck wildly against your face as wave after wave of thick cum fills your throat, coating it with her delicious flavor. Her moans turn into low growls of pleasure, and she thrusts herself even deeper onto you as the orgasm continues to wash over her.

With a loud groan, Olivia finally can't take it anymore. She rolls over onto her back, spreading her legs wide in invitation as she runs her fingers through the sticky mess of chocolate on her own cock, gathering up a healthy amount before aiming it directly at your mouth. "Here," she pants, offering you some of her tasty treat. "Eat it all..."

As Olivia begins pounding her cock into your mouth, you taste the thick warmth of her cum spilling over your tongue. Her hips buck wildly, driving her shaft deeper and deeper inside as she lets out a long moan of relief and pleasure. Clara watches hungrily from beside them, a satisfied smile playing on her lips as she runs a hand through your hair, urging you to keep going.

"Oh fuck... that's it..." Olivia gasps, arching her back sharply as she feels the last of her cum erupt from her cock and pour down your throat. Her legs go limp beneath her, and with a soft moan she collapses onto the bed, spent but satisfied. Clara giggles naughtily before leaning over to whisper in Olivia's ear: "I think he enjoyed that."

Both girls study you intently, their bodies relaxed as they wait for your reaction. What do you say to them?