Night of nigh-unbridled passion

Your sister wastes no time once you reach your shared room. With deft fingers, she locks the door behind her back while maintaining eye contact with you. And what eye contact it is! Doe-like eyes lined with black, emphasizing the smouldering gaze she shoots at you. With a firm hand, she pushes you back but not to the bed. You slump into the chair, legs wide.

"Now baby brother, hold still and enjoy", she whispers in your ear and gives your ear lobe a quick bite. Standing between your knees, she pushes the straps off her shoulders, her slinky dress falling down to her waist. Shelly wiggles her hips in order to get the dress completely off. At the same time, her hands go behind her back and _snap_ her bra comes off, quickly thrown to a corner. Her beautiful breasts sway and immediately hypnotize you.

"God Shelly, I love your boobs", you confess. With a smirk, she leans over, pushing the girls into your face. That's all the invitation you need to let loose - hands and mouth attacking her tits, groping, pushing, kissing, licking as much of her bountiful bosom as you can. Shelly's giggling is music to your ears. She wraps her arms around your head, pulling you in even further. Time loses all meaning as you devour her boobs. The only sound you can hear is her ragged breathing as she grows more and more excited, though the booming of your heart is a loud competitor. Sadly, eventually Shelly has had enough of your breast worship and she gently pushes herself away.

"Now you can fuck them", Shelly tells you as she kneels between your legs. With feverish movements, you get your trousers down your legs but before you can kick them off, Shelly's improved tits sandwich your dick and you forget about such trivialities as socks or pants. With both hands keeping her tits pushed together, Shelly undulates her torso, creating lovely pressure. Then she switches to moving forward and back. This lets you play with her nipples, something that she clearly approves of as her eyes close and she bites her lower lip without hindering the rhythm of the titfuck. Your sister is surprisingly good at this. When, where and how did she learn?

The question flees your mind as Shelly leans her head forward enough to capture the head of your cock between her red lips. Her tongue presses on that soft spot just underneath your helmet and it's the final push to get you over the edge. With a deep groan and shudder, you ejaculate in her mouth. Your sister hums happily as she swallows and then shows you her empty mouth.

"I hope you're not too tired, dear brother", Shelly whispers breathlessly. She gets up and takes a sip of her water bottle.

"Next I want you to fuck my mouth. Show me you can be dominant too", she says as she lays down on the bed, her head hanging just off the edge. You gulp in nervous excitement. Finally stripping fully down, you approach your buxom big sister, your dick still hard and waving in the air. Shelly obediently opens up as you get close so it's easy enough for you to feed your dick to her. You begin with small hip movements, just barely moving your trouser snake in her hot mouth but as time passes and Shelly clearly continues breathing through her nose and isn't in visible distress, your confidence grows and your movements get stronger. Even when you hit her throat, she merely gags instead of convulsing. You lean forward to grab her nipples and pull on them while pushing harder into her mouth at the same time. She moans deep in her belly and her throat opens up, letting your cock head inside. The pleasure jumps tenfold and you gasp out loud.

"Oh god Shelly, your throat is the best", you exclaim and pull your hips back for another surge, though you're nice enough to give Shelly few seconds to breathe easier. Then you push forward and batter her throat open again.

And again.

"FUCK!"

And again.

"TAKE IT!"

And again.

Your final yell is just unintelligible growls as your nuts smother your sisters' nose as you sheathe yourself completely inside her mouth and throat. Said balls unload their precious cargo and you spew cum straight through her gullet. Shelly is making all sorts of distressed noises and is tapping your thighs so, after your initial spurt, you pull back and decorate her face with cum as she coughs.

Exhausted, you fall on the bed next to her but after calming down, Shelly crawls over you, gives one of your nipples a little lick and then whispers to your ear:

"Drink some water baby, we're not done yet"

She then vanishes to the bathroom and soon you hear the sound of running water. Tired as you are, you're also curious what your sister will do next, so you get up and finish the water bottle Shelly started. Then you get back to the bed.

When Shelly returns, it's clear that she's washed her face as her makeup is gone. She puts her hair into a ponytail and crawls between your legs.

"Just relax little bro, let your big sis take care of you", she whispers as she holds your flaccid cock, staring at it. As if by magic, you start to harden. Maybe your sister has psychic powers? As your little friend grows, your sister grins and swallows it all, making eye contact. As your cock grows, she slowly retreats. The languid pace feels relaxing after the hectic face fucking you performed earlier. So it's no surprise that you feel your eyes slowly closing. Shelly keeps up the relaxing suck-job, making soft moans on occasion. Unlike the almost violent passion that you experienced earlier, the pleasure this time is softer, building slowly.

You realize you fell asleep when you find yourself back in the Labyrinth and you're pretty sure that you didn't even cum.