Sappy or not, exotic paradise awaits!

You wake up slowly, as if your consciousness was as heavy as a cartload of lead, slowly being dragged to the surface. There's something in your mouth and, in your half-woken mind, you can't figure out what it is. Opening your eyes, you can't see anything, as the blanket is over your head. It's quite warm underneath, almost annoying so. Then it hits you - you're suckling on one of Shelly's boobs! Either by design or accident, one titty has popped free of the red bra, and fully a third of it is in your mouth. For a moment, you're going to freak out - SHE WILL KILL ME - until your memories catch up with your consciousness, and you remember the shenanigans you've been up to for the last week.

Now calmed down, you spit some of the boob-flesh out of your mouth so that you can suck on her nipple properly. And what a divine nipple it is, big enough for smacking lip action.

"Is my baby brother feeling like a baby again?" You hear Shelly's voice quietly teasing you, and her fingers run through your hair again. Instead of answering, you redouble your sucking effort and Shelly awards you with a low moan.

"Dear passengers, we are about to begin our descent to the Denpasar International Airport. Please raise your seats to upright positions", the voice of the stewardess rudely interrupts your fun, as the moment Shelly digests the message, she leaps back to her seat. You're left blinking in surprise, still half-covered by the blanket.

By the time it's time to leave the plane, Shelly has fixed herself back to normal. Well, slutty teenage sexpot normal. If you couldn't still taste her nipple in your mouth, you might think it was all just a dream.

Customs and immigration go easily, as a local bureaucrat warmly greets your father and escorts you through the formalities. There's a nice car waiting to whisk you to the five-star seaside hotel and blessed be, it has air conditioning. While your dad discusses something utterly boring with the local, you take in the sights. No, not the palm trees and mountains and the suicidal scooter-riders. You focus on staring at both Shelly and Glynda. Your step-mom was quite a bit more conservative in her dress than your sister was, but then again you had not messed with her fashion sense. Yet. Her capri pants were nice and snug over her hips and butt, yet your eyes keep burning holes into the semi-transparent blouse she's wearing, that left her navel-ring visible to the world. It was really tight across her bosom and you're confident that her boobs, just like Shelly's, are growing. You can't wait to see them blossom to their new, improved size!

At the hotel lobby, an apologetic clerk admits a mistake with the room bookings - instead of three, there are only two available, and the hotel is absolutely jam-packed. Your father is furious.

"You two are too old to share a room and we're not going to do some boys and girls rooms bullshit", he rants. "I'll start looking for other hotels", he swears as the bureaucrat who escorted you here starts tearing into the hapless clerk. You pull Glynda to the side:

"Hey mom, it really isn't a big deal. Shelly and I can share a room, no problem, right sis?" Shelly emphatically nods. Glynda looks at the two of you - is that suspicion in her eyes - before eventually breaking into a huge smile. She walks back to your father and exchanges a few words. He is clearly not willing to accept this idea, Shelly's new wardrobe and the amount of attention she lavishes you with seem to have rung some alarm bells in his head, but Glynda shows off how her soft-power. In just a few minutes of whispering and puppy dog eyes and strategic hand movements, your step-mother has changed your father's mind.

"Fine, we'll take the two rooms. I expect that your hotel provides top-notch service as compensation for this inconvenience to my family", he barks. The clerk bows multiple times, as he signals the bellhop to carry your bags.

Two weeks with your smoking hot sister, in the same room. Could this holiday get any better?

Yes.

Yes, it could and yes, it does.

Because while your father and Glynda inform you that they will take a nap to recover from the flight, Shelly tells you that you'll be escorting her to the pool. And the moment you close the door to your, admittedly really nice, hotel room behind the bellhop, your sister pulls her top over her head and flings it across the room. Her bra follows in short order. Your jaw drops to the floor simultaneously with her little skirt. Still wearing heels, panties, stockings and a garter belt, she kneels at one of her suitcases to dig out her bikini.

"Can you help me with the stockings, little brother?" Shelly asks, in that flirty sing-song voice. Your dick is tenting your jeans so hard and your throat is suddenly so dry. You can only nod.

Shelly gracefully sits on the edge of the king size bed and points one leg straight at you. You kneel in front of her, slowly taking off the shoe, then unclipping the stocking, before carefully rolling it down. Shelly's foot somehow manages to rub your aching dick through the shorts while she's putting it down. You moan and shake your head to clear it. It won't do to come this quickly, but your sister is pushing your buttons quite effectively. You repeat your actions with Shelly's other foot and this time, as if understanding how close you are to climax, she does not tease you. Instead, she merely stands up, which does place her pussy right in front of your eyes and takes off the garter belt.

"Shouldn't you be changing too, baby bro?"

"Uh yeah. Okay. Yes, of course, I am", you mumble. You only brought one bag, so it doesn't take you long to retrieve your board shorts. For a moment you're feeling self-conscious, for no good reason. But hell, who dares wins, and this is an important stepping stone on the path to greatness. Well, great sister fucking at least. You turn around and see that Shelly hasn't moved a muscle. Her eyes are focused on the tent you're pitching below the belt. Which you unbuckle and unbutton, with no hurry at all. See how she likes it when the tables are turned!

The moment your jeans and underwear drop to the floor, Shelly grabs her panties and bends down to take them off. She keeps her eyes focused on your dick, now gloriously standing erect in the cool airconditioned air. The movement brings her face dangerously close and for a fleeting moment you think she's going to kiss the tip of your cock - but alas, it is not to be. She falls back on the bed and your eyes are riveted on her bald and perfect pussy.

"You're so beautiful", you mutter, "even your pussy is perfect!"

Shelly blushes.

"Thanks, bro", she mutters as she pulls the bikini bottoms up, her delicious jugs juggling. "Can you me help with the top, please?" You nod, but your hands are shaking so much it takes you multiple attempts to tie the strings together. And it brings you so close to her, that your dick brushes against her side, leaving a snail trail of pre-cum across her ribs.

You're about to apologise but Shelly merely wipes it off with her fingers and then, seemingly without thinking about it, brings the same fingers up to her mouth, smelling and then licking them.

"Hmm, not bad at all, baby brother," she quips, then seems to realize what she said and furiously blushes again. "Okay, get your shorts on, the pool is waiting", she orders you, turning around. The air is so thick with tension that you could cut it. And your cock is so hard that you could use it to cut the tension. You're really tempted to just push her on the bed and ravish her, but you made that promise to yourself of getting Shelly to seduce you and you're not going to give up when you're so close to your goal. So you sigh and pull up the board shorts. Which is when you realize there's a massive problem.

Namely that your dick tents the shorts so badly that it is, frankly, obscene. Shelly turns around after hearing your little giggle and can't help herself from giggling as well:

"Well, there's no chance you can go out looking like that".

"No, no I can't", you agree.

Shelly seems to think for a moment as if going through an internal debate. Then her eyes focus on yours, having come to a conclusion.

"Little brother, do you find me attractive?"

What the hell? Where is this coming from? You wonder if you should play it coy but that would be kinda silly at this point. She knows she has caused you multiple erections, both imaginary and real. So you admit the truth.

"You're the sexiest girl I've ever met or seen, real life or on the Internet", you say. Shelly's eyes grow larger and softer if that's even possible.

"Let's do this then. You have to masturbate to get rid of that ridiculous tree trunk and I don't have the time to wait twenty minutes for you to do it in the bathroom", she explains as she sits on the bed again. Twenty minutes? She's out of her mind, you would come in twenty seconds. But you're willing to play along this game, whatever it is, so you merely nod again.

"So just jerk off here while you look at my tits so it'll go faster", Shelly says and pulls the little cups of her bikini top to the sides, revealing her hefty bosom in its full glory.

"Oh... okay", you say and like greased lightning, your shorts are down at your knees as you wobble right in front of Shelly, your left hand gripping her shoulder, your right hand gripping your dick. It really only takes that twenty seconds that you guesstimated earlier. Twice your dick makes contact with a nipple as Shelly uses both hands to lift her magnificent breasts for your viewing pleasure. The whole scene, the long buildup, her blonde hair in twintails, her eyes glimmering with love, her massive boobs and erect pink nipples calling out to you - yeah, you're kinda surprised that you managed to last even twenty seconds.

"Shellyyyyyyyyyyyyyyyyyyyyyyyyyyyy...................", you half shout, half moan as you erupt, cum flying as if shot from a cannon. If Shelly thought you would dribble a few measly drops over her boobs, she had no idea.

Your cum liberally coats her face, running from her forehead over her eyes and nose, her cheeks and lips, her neck and all over her chest, until finally the last drops fall on her thighs, pressed tightly together. You're so overcome with pleasure that you fall back on your butt on the floor, shorts in your ankles and your spent dick still in your hand.

Shelly seems stunned. She just sits there, her hands still lifting her boobs, eyes closed, eyelids sealed shut with cum. She's gorgeous. Well, in a kinky, disgustingly filthy, sort of manner of gorgeous. If you were into cum showers and that kind of perverted shit. Which you definitely are.

"Wait there, I'll bring you a towel", you say somewhat sheepishly. You kinda doubt that your implanted memories and the re-ordering of her priorities and values that you had done were enough to prepare her for starring in a one-man bukkake show. But your worries vanish as you return from the bathroom, towels in both hands and you see Shelly licking your cum off her lips.

Oh dear god, she is so fucking sexy. And your dick agrees with your brain. You hand the towels to Shelly, but that leaves you with a conundrum:

Mr Happy is ready for more, all rigid and saluting proudly and the sight of Shelly wiping your cum off her face and chest is only making the situation worse.