jace: HOW THE FUKING HELL DO YOU KNOW THAT?
luke: well… we're married-
jace: DID YOU KISS HIM?
luke: because we're married
jace: THAT'S NO EXCUSE, LUCERYS!
— summary: To make the most of the last Saturday of the summer holidays, Aegon convinced his niece and nephew to go skinny dipping, even though it was late at night. Five minutes naked in the water was all it took for the tension to start intensifying, becoming impossible to resist.
— pairing: soft!Aegon II Targaryen x Lucerys's twin sister x soft!Jacaerys Velaryon
— type: smut, modern AU
— word count: 2.0k
— tags/warnings: female!reader, bisexual!Aegon, bisexual!Jacaerys, modern AU, Targcest (uncle/niece & older brother/younger sister & uncle/nephew), threesome FMM (female/male/male), skinny dipping, age gap (older man/younger woman & older man/younger man), Aegon is 26, beach sex, vaginal sex, vaginal fingering, handjob (male giving), creampie, aftercare, corruption kink but in a soft way, secret relationship, Aegon being a voyeur, fluff ending, porn without plot. no use of y/n, english is not my first language.
— author's notes: welcome to the day 21 of my Kinktober 2025 💕💕 my fics are being posted quite late cuz i haven't been feeling well writing lately, my apologies
It was already ten o'clock at night when Aegon convinced his nephew and niece that a dip in the sea at that hour would be a good idea. According to him, it was the perfect opportunity to enjoy the last Saturday of the summer holidays. The last Saturday where you and your older brother could enjoy your uncle's company completely and in secret.
Since the end of the school year, you and Jacaerys had been talking about how you wanted to have the best holidays ever together with Aegon, and obviously that had to involve the Targaryen family's beach house.
Just like your twin brother and little brother, who had chosen to spend those free weeks elsewhere and with other people, Aegon's younger siblings also did not travel there. Aemond was temporarily at the apartment of the gothic girlfriend he met at a tattoo studio, Helaena was enjoying a "mother-daughter" trip with Alicent to Copacabana, and Daeron was having too much fun with the experience of being a freshman in college to even consider traveling with the family anywhere.
So, you were able to have the whole house to yourselves for a few weeks, where you could do whatever you wanted. And most of the time, "doing whatever you wanted" meant having sex whenever and wherever you wanted. That night would be no different. Aegon's suggestion to drive to the nearest beach for a night fun seemed wonderful, considering how hot the weather was. Even better was the suggestion to dip naked, without any swimwear or any other type of clothing.
And, of course, things escalated quickly from the moment Aegon parked the car as close as possible and the three of you walked to the beach. Five minutes naked in the water was all it took for the tension to start intensifying, becoming impossible to resist.
The tide was not that high that night, even though it was a full moon. You, Jacaerys and Aegon had kept your bodies covered up to above your navels, deep enough for the water to cover your intimate parts while you talked and watched the starry sky.
Aegon had drunk a little as soon as he arrived, and although he was not really drunk to the point of being unsteady or dizzy, his hands could not help but touch your body under the water, chuckling to himself when Jacaerys started doing the same, a hint of jealousy as he realized he was not the one giving pleasure to his little sister.
The gentle waves lapped against the lower part of your bodies, the cool temperature providing a nice contrast to the heat you were feeling between your inner thighs, along with the slickness of your arousal there. “Look at her, nephew…” Aegon whispered with a teasing smirk to Jacaerys, his chest pressed against your back, and his hands busy worshipping all of you. “Look how wet your little sister’s pussy feels.”
Jacaerys hummed in realization, groping one of your breasts while stroking himself with the other fist. Your older brother watched your face contort with pleasure, your lips parted in pure ecstasy as Aegon fucked his middle finger inside you, splashing some water as he did it.
“Is our uncle making you feel good, little sister?”
Jacaerys’s voice was hoarser than usual, raw, unadulterated lust vibrating from it. You could barely think straight, the seawater lapping against your belly as you trembled between the two of them, arching your back to better steady yourself, the roundness of your ass pressing against Aegon's bulge. “Y-Yeah… So good, brother.”
The two guys exchanged an amused chuckle, looking at each other with a knowing glance, as if they were having the same idea.
And indeed they were. To your dismay, Aegon suddenly pulled his fingers out of you, smirking at the sight of them looking so pruney from the saltwater. “Uncle…” You whined with a childlike pout, but Aegon just huffed out a laugh, shaking his head.
“Let’s go back to the sand. I’m sure Jace wants to have some fun with you too.”
Although you wanted to continue pouting and complaining, you knew it would be useless, so you just followed them out of the sea. Goosebumps ran through your bodies after leaving the water, the cool breeze instantly hardening your nipples, the sensitive peaks perked up, eager to be stimulated when you reached the part of the sand where the three of you had left the clothes and Aegon's beers, as well as the towels to dry yourselves and the larger towel covering a part of the sand where you could sit or lie down. Aegon was about to make some joke about how lucky he was that the wind had not blown anything away, but the words died the moment you lay down on the towel, spreading your legs for them with the utmost willingness.
Your pussy was soaked, both from the seawater and from the arousal. Aegon and Jacaerys could see how your small bundle of nerves was throbbing in anticipation.
Jacaerys faced his uncle, those brown puppy-dog eyes looking cuter than usual. He was desperate for release, his cock hard ever since the three of you had undressed. Even though it had been months since the first time the three of you fucked — when Aegon caught Jacaerys eating you out on the night of your and Lucerys's sixteenth birthday —, that did not lessen Jacaerys's eagerness. He always acted as if it was the first time he had experienced something so good like that.
Sensing his nephew's pathetic state, Aegon gestured to your naked form. "All yours."
As expected, Jacaerys did not wait another second. He immediately positioned himself on his knees in the sand, holding his cock to guide it to your entrance. "Fuuuck..." Jacaerys sighed as he felt the initial tension, those velvety walls clenching around him until he reached the back of your core.
"Jace! Hnnngh!" You let out a strangled sound, bringing one hand straight to your mouth to muffle the sounds of pleasure that followed. With the other hand, you grabbed his slim waist, pulling him closer until his body was completely towering over yours. Jacaerys's hair was damp from the dipping, drops of water running down his brown curls and dripping onto your face amidst the thrusts. You barely cared about that, more focused on trying not to cry out with pleasure while your brother's cock fucked in and out of you, fast enough for you to realize that it would not be long before he reached his high.
Meanwhile, Aegon watched the incestuous scene in front of him, marveling at the sight and with his palm around his cock, using the dampness left by the saltwater as lube. His hips moved back and forth, fucking his own fist in a fast pace, an attempt to mimic Jacaerys's movements, imagining that it was him fucking you.
Most of the time, Aegon did not mind just being a voyeur. Despite the fact he also loved joining you, witnessing and appreciating was quite an experience too. From the first moment he accidentally found out about your forbidden relationship, Aegon was thrilled with the idea of having the opportunity to watch whenever he wanted, and also to help the two of you do new things. He was the one who had taught Jacaerys how to fuck your ass without hurting you, he was the one who had bought sex toys for the two of you, he was the one who had helped you learn how to squirt...
And now he was providing you with the experience of fucking on the beach, so late at night.
Rhaenyra would kill him if she knew that her brother — a twenty-six-year-old man with a reputation for being a perverted womanizer — was taking advantage of the innocence of her eldest son and her only daughter, both too younger than him.
Aegon enjoyed having fun with his nephew and niece, no matter how wrong it all was.
His fist began to work faster on himself, those wet sounds along your broken whimpers and Jacaerys's low groans echoed in the silence of the night, amidst the sounds of nature.
With each rough thrust given by Jacaerys, your nails dug into the skin of his waist. The attempt to your hand to muffle your moans was completely ignored, you chose to use both hands to grip Jacaerys’s hips as you felt your orgasm approaching.
Your pussy was still sensitive from Aegon's previous ministrations when you were in the sea. Remembering that brought an idea to your mind, and with great effort you moved one arm away from Jacaerys, bringing it down until it reached between your legs. Your clit was already throbbing, so needy that you did not even hesitate before you started rubbing it.
That action made your walls tightened around Jacaerys's cock as you climaxed, pushing him over the edge right away. Your brother's eyes widened immediately, then he squeezed them shut and threw his head back, his hips stuttering after he pulled out of you in time. Thick spurts of cum creamed your swollen folds.
Jacaerys did his best to remain kneeling, his breath still ragged. He looked at what was before him, the moonlight's shadow making the sight seem even more sinful, as if it were all just a wet dream.
“You look so fucking beautiful, little niece…” Aegon whispered and knelt beside you, his fingers going straight to your pussy, playing with the soft flesh and the throbbing clit.
With his other hand, Aegon was still pleasuring himself, the movements becoming faster and at the same time kind of erratic, almost as if he could not maintain a steady pace. Aegon knew you were already too overstimulated to take his cock inside — after all, you had been fucked by him and Jacaerys several times in those weeks, and a few hours earlier too —, so he looked at Jacaerys, reaching for his palm.
Despite the exhaustion, his nephew did not resist. Instead, he let Aegon guide him. With his fingers around his uncle's thick cock, Jacaerys began to pump it at the pace Aegon had been doing with himself before, biting his lips as he heard the grunts of pleasure in response.
Jacaerys knew very well how to drive his uncle crazy. Without stopping his ministrations, he rubbed your sensitive core with his other hand, giving you a soft smile in apology for the not-so-welcome overstimulation at that moment. Feeling that he already had enough amount of cum creaming his fingers, Jacaerys brought them to his mouth, looking at Aegon the whole time he did it, and fluttering his eyelashes in feigned innocence.
The sight of his nephew sucking his fingers as if it were a cock and eating his own cum was too much to handle. Aegon let out an almost guttural moan, staining the sand with the evidence of his release.
Lying down, you watched Aegon's chest rise and fall, the strands of dark blonde hair now stuck to his forehead. He was quite a sight, just like your brother. Jacaerys's gaze met yours, and his perverse attitude from minutes before turned into a display of affection again. Jacaerys lay down beside you, ignoring the fact that the towel was not big enough to prevent the three of you from having your skins touching the sand.
Still breathless and feeling spasms throughout his body, Aegon joined you, arms crossed behind his head while he looked up to observe the moonlight, appreciating the smell of the sea air mixing with the recent smell of sex. It was quite late and Aegon knew you could not linger much longer before going back to get the car to go home.
However, Aegon also knew it would be okay to lie there for a few more minutes, listening to the sounds of the waves as an usual, silent moment of aftercare with his niblings. It did not matter if the next afternoon he would be forced to take you and Jacaerys back to Rhaenyra's house… For now, you were both his, and he would make sure you enjoyed the last night there in the best possible way.
