It's a summer day, the sun is high above the ground, the waves are slowly lapping the sand on the beach. From time to time the waves, driven by the wind, hit the rocks, leaving a resentful response with the loud crash of water against solid rock.
The Alcaro family was busy today. The younger Kano and Malko were at home, their parents had gone to the opposite side of the island, leaving Malko to look after his younger brother for a few days.
The brother and sister were in charge, both lying in bed in their room now, barely dressed. Malko was a tall and slender girl, her long black hair stretched all the way down to the middle of her back covering it, only two strands thrown over her shoulders covering her breasts. Next to her was Kano, a young boy of about 15 or 16, reading an old book his father had once given him.
- Malka, how far is that ship?
- Far away, deep, not for us.
- What a pity.
Kano was interested in the old ship that had sunk centuries ago, not so much for the treasure as for the sheer curiosity of seeing the remains of the ship. Malko, on the other hand, was not enthusiastic about the idea, as the ship was too deep for both of them to dive, although she was interested in diving. But now there was no reason to go there. The boy got out of bed and moved toward the old closet in their room. His sister's gaze never left him as he searched for something.
- Do you want to go somewhere? 
- No, just looking through our things.
- Yeah, and you thought I believed you.
She stood up slowly, her chest stretched down covered by streaks of hair, stretching in place she stood up and walked towards him. Kano pulled out an old box that held their things, mostly swimming trunks and swimsuits. She leaned over, resting her breasts on his head, inspecting the things he had found. Kano only tried to look up in embarrassment, but his sister's breasts blocked his view.
- "Malka, since your parents are not home, why should we stay here?
- You'll get into trouble again.
Kano laughed, making his sister take a deep breath knowing that her brother would not listen to her. She reached into the shelves of the closet above, pulling out several pairs of swimming goggles, some nose clips, and fins. Kano pulled out his blue swimming trunks and his sister's swimsuit, the latter staying in his hands longer until his sister pulled it out of his hands.
- The little pervert...
- No, no! I was just serving them to you.
This time Malko laughed, she knew the young boy was interested in it.
They took a few minutes to get ready, put their things in a bag, and after a glance at the house, they headed to one of the island's most interesting places. Both were preoccupied with their own thoughts. 
After reaching the mountain range, they followed one of the old roads, it led to the old mines and quarries, in front of which stretched the old village, the only problem was that the village was flooded by the flood earlier this year. Although no one was hurt, the town was swept away by the water, with only old roofs and a few two-story buildings to remind us of them. Now it was inhabited by the elements, which interested the two teenagers.
For several minutes they had been walking down the hill to the water's edge. Now they stood before it, the lake that held the village captive. The brother and sister had loved this place before, but now it was like a playground.
- Malka, how deep is it now?
- I think the water is ten or more meters high now.
- That's cool.
Kano was the first to undress, his T-shirt and shorts quickly came off, leaving him in just his underwear. But not for long, his hands instantly pulled at the fabric of the underwear and fell to the ground, leaving the young man naked. He stood there enjoying the wind and the sun on his naked skin, the wind gently stroking him, while jiggling his cock.  
The sister was next to him, she was dressed only in a long blouse that reached almost to her knees, the blouse quickly released her remaining in her hands, her long slender figure shone in the sunlight, only white panties remained on her.
- Kano, slow down, don't go there so fast...
(Splash!)
- That kid...
Before she could finish, her brother jumped out of the water, he jumped in first, just laughing at his sister.
- Are you going to be long? Just throw them off and dive in.
- ...
Malko made a movement and her panties fell off, only her hand slightly covering her crotch. She reached for her swimsuit, but a piece of seaweed flew at her.
- "You little fool!
- You won't catch it.
Like a long doe of an arrow, she jumped into the water naked, such a fast movement made her brother frightened, as the splash of water from her disappeared instantly, leaving the water surface smooth. But something grabbed his legs and pulled him under the water, and he barely had time to close his mouth as the water swallowed him. He was disoriented for several seconds, unable to open his eyes. But a familiar tickle made him realize his attacker. Malko dragged him down to the bottom, holding his legs tightly, while her other hand tickled his leg, making the young man gurgle with laughter and tickling. But his sister didn't drag him for long, he quickly grabbed at his throat showing her his weakness, she quickly pulled him away without letting him breathe.
Shota reached the surface quickly, flailing his legs and arms, even as a good swimmer he was puzzled by the lack of air and his sister's tickle. She followed him with her eyes, swimming below him. Before they both came up for air.
- Ah, you know how to beat me, sister.
- Well, I'm the older sister, I know how to give you trouble.
Both were breathing hard, but having satisfied their need for air, they thought about what to do next.
- Let's play hide and seek!
- No way, we know this place.
- Ah...
- Let's just take a walk around the village.
- Can we? I'm going to visit Paulo.
- He's not there.
- But the house is!
Kano inhaled a deep breath before disappearing with a splash of water and foam, vanishing under the water. Malko watched her brother's disappearing blurry silhouette. She followed him as the pink haze disappeared under the water, breathing calmly for a few seconds, sucking air into her lungs before disappearing into the water as well. 
The water bobbed with waves and foam for only a few seconds before freezing like a mirror.
Malko was rapidly approaching the flooded village, now just dark silhouettes of houses and streets that had been taken captive by the water. Once there was life here, but now there are only fish and seaweed shoots around.
The girl reached the bottom, which was now an old stone road, looking around. There was only the silence of the water and her own heartbeat. The old city echoed with history and memories, thickening her pleasure at the freedom of movement. She swam around the houses, now inhabited by fish. One of the houses was open, allowing the girl to go inside.
The house creaked with wet wood, old things were floating around, only the table was heavy, leaving a reminder of its former inhabitants. Malko seemed to be mesmerized, there was an unusual silence around her, as if she were in her own home, looking out the window of the flooded house, which faced the street, revealing the silhouettes of other houses blurred by the water.
Malko surveyed the view outside for a few seconds before returning to the interior of the house, looking around for prying eyes for a few seconds. Once she was sure there were none, she sat down on the old sofa, the wood creaking but holding up. Malko stretched, looking at the interior of the room around her, but her thoughts were elsewhere. She enjoyed it for a few seconds before something grabbed her from behind.
- Blabwabblabblab!!!
Two hands grabbed her breasts and kept pulling them gently from top to bottom, making the girl whimper in surprise, only when she was able to turn her head, she saw Kano looking at her funny, squeezing her breasts harder.
She could feel the bump of his cock, restrained only by the fabric of his swim trunks, pressing into her buttocks. She turned around, grabbing him and holding him to her, laughing. Kano, bewildered, only repeated after her, catching her in his arms. Only when she let go of him did she see his bump in his swim trunks get bigger, apparently her bare breasts had given him a boner, and her brother awkwardly pulled the fabric closer to him, as if to flatten it. Malko stroked him with her hand, giving him a calm response to his arousal. Her sister had seen him naked before, so she wasn't too worried. 
Her hands wrapped around his hips and slowly pulled down the blue fabric of his trunks, and his hard cock popped out from under the bump, but now he was calm with her actions. His cock calmly emerged from his trunks, bobbing freely in the water under the supervision of his sister's eyes. They both laughed at each other, strange as it was, but both were distracted by the chest pounding, realizing the time of the long dive. In an embrace, they swam out of the house, heading back to the surface.
A splash of water broke the smooth surface of the lake, revealing two naked bodies coughing and inhaling long bursts of air.
- What a naughty boy, it's not polite to grab a girl's breast.
- I saw you needed help, so...
- Yeah, thanks, I forgot about the air.
- Hey, you little brat.
- What?
- Who grabbed my breast?
- And this...
Slowly, their breathing calmed down, the coughing disappeared, and now the two were just lying on the surface of the water. Malko laughed, remembering old memories. Her brother swam closer to her, almost leaning against her. The brother and sister looked at each other.
- And you, what were you doing?
- I looked at the old house, but nothing... Then I saw you and followed you
- I see.
Malko stretched out in the water and began to breathe in,
- Are you going down again?
- Yeah.
- Okay, I'll follow you.
The water was again disturbed by a splash of water as they both plunged under. She pulled him with her in her arms, quickly approaching the edge of the village. Reaching the bottom, they both looked around for an interesting place to explore. They split up, and Kano swam to the nearest houses, while his sister swam into the old school, giving him a last look. The old building, divided into several classrooms, was now flooded, with only the remains of posters and various books destroyed by the water floating around. 
The naked girl swam through the corridors looking into classroom after classroom, but not a single teacher or student was there. But she was happy, there would be no homework here, except for...
Alone in the corridor, she went to the teachers' lounge. Alone there, she lay down on one of the sofas. Her hand reached out to her breasts, gently squeezing them, her nipples tensed slightly from the tickle. She continued to massage them from top to bottom, gently tugging on her nipples, making her moan constantly. 
The pleasant sensation only increased and her hand already reached from her breasts to her legs. But she was in no hurry, she slowly stroked her hips and thighs in anticipation before her legs opened. The hand instantly reached for her vagina, gently opening her lips, she moaned a little but covered her mouth with her hand. The hand slowly rubbed against her pussy, increasing the amount of bubbles she was losing in the process. 
But a pink shadow floated by in the neighboring houses, forcing her to be distracted from her self-satisfaction. Her brother floated around them, looking around, but he was most interested in the two-story brick house, looking around for a few seconds before opening the door and disappearing inside. Curiosity got the better of her, and covering her crotch with her hand, she followed him.
The old house looked like a fortress, the thick brick walls remained unshaken even under the elements, only the glass in the windows had cracks from the water pressure. Wanting to be inconspicuous, she swam to the second floor where there was an open window, bouncing in like a ball, she crouched on the floor listening to the inside of the house. The walls rattled with the pressure of the water, but among them she could hear a sound similar to her brother's, coming from the first floor. Carefully, she floated over the stairs before the sound became clearer to her, not leaving her alone. It was a heavy whimper, as if he was struggling with something, but her caution only led her to peek out of the corner of her eye into the room.
Kano found an old room with more or less intact furniture and sat on a soft chair, the naked boy sitting on the edge of it, but her sister understood why, as he letting out a series of bubbles each time. Her brother was not too different from her, both finding the flooded village and the feeling of freedom from prying eyes an attractive place for solitude and pleasant caresses.
"Mmmblgl...hblberglbl! "
(Ah, good. Nice for the dick)
Kano closed his eyes and sat in the chair, slowly pulling his cock from top to bottom, his hand constantly pulling the foreskin back and forth, making the young man moan with each descent in pleasant pleasure. He was unaware that his sister's eyes were watching his performance of pleasure. Malko didn't think long as she sat down next to him, enjoying the pleasure of his brother's naked body and his cock, her hand reaching for her pussy and slowly pushing her fingers inside. Only the handheld back her moans and bubbles of pleasure, preventing her from being noticed. Her fingers went even deeper into her vagina and she caught some water through her lips, but still resisted the urge to moan.
Kano continued to jerk off, but now leaning back more in the chair, speeding up his hands, his other hand slowly massaging his chest, only the nipples, excited by the touch, distinguishing the relief of his flat chest. Kano let out another puff of air before the hand from his chest reached for his hand, covering his mouth from further loss. He squeezed his eyes shut in anticipation of the approaching orgasm, he could feel his cock throbbing with hard length, the shot was coming soon.
But he opened his eyes suddenly, a sound that puzzled him. Malko sat quietly, realizing that he had heard her moan. Kano looked around him but did not let go of his cock. Malko knew it was too late, but the temptation and excitement of her perversion left her no choice.
Quick as an arrow, she leapt at his side from the corner of the room, crushing him with her weight, making him scream, but his sister's hand covered him instantly. He looked at his attacker, only a look of surprise at her naked bottom to reveal him. The sister smiled as her brother floundered beneath her. 
"Mmrgbl! GRRBLGRBL!!"
(Sister!! WAIT!!!)
Quickly, her bottom was already on his face, and she turned around in the opposite direction. Her pussy and ass pressed against his face, only small bubbles of air tickling it. Kano understood the intention, his hands grabbed her ass and pressed harder, a moan carried with the air to the ceiling from her lips as his tongue began to kiss and caress her pussy. She in turn pressed her breasts against his pelvis, his cock slipped between her breasts, and her mouth immediately kissed the head of his cock before it entered her mouth.
"Mmmblgl! Mmmblgl...Mmrgbl!!!"
(NO. Little brother, you can't get away from me that easily)
They both caressed each other, his tongue and mouth licking her pussy, and his hands stroking the plump ass and thighs of the smart girl. She, in turn, sucked his cock deeper and deeper into the middle of her mouth, her breasts massaging his shaft like pillows. Both of them moaned softly from their mutual caresses, sending air to the ceiling of the house. 
She grabbed his head with one hand and pressed him harder between her legs, increasing the pleasure of his tongue in the embrace of her legs. Holding back her moan and the air in her lungs, she swallowed his cock deeper. This made his cock even bigger, and it was already confidently preparing to enter her as his tongue licked her vagina. Releasing her brother, she stretched out in pleasure, but immediately something slipped into her pussy. His hand reached in and his fingers kept caressing her inside, making her sister whimper with pleasure and her brother's impudence. She turned around to face him as he pulled her to him, his cock rubbing against her pussy, but her sister just wagged her finger in frustration.
She just smiled and sat down next to him, her hand reaching for her ponytail, spreading her legs in front of him, giving him a good view. He didn't shy away from it; at home he had felt aroused by looking at her bare breasts in his sister's arms. And now all her feminine majesty was revealed to him, his hand opening the middle of her hole and his fingers sliding inside, making her moan with short puffs of air, only her eyes closed to watch his brother.
He leaned back in his chair calmly, his hands reaching for his cock, the work was not finished, so the long length stretched out to him. His hand grabbed and wrapped around the shaft and head, pulling back the foreskin. Both were masturbating on each other, but neither of them cared. They were too perverted by it, wanting to enjoy themselves.
But she didn't care, it was pleasurable for her and no one saw it. She burst a burst of air, releasing a large cloud of bubbles. Unbeknownst to her, some tension had built up in her lungs, and she instinctively blew bubbles to release it. She calmed herself down, but it didn't last long, her body reminded her of itself again with pain in her chest, the air was getting smaller by the second. 
Kano could also feel the feeling of anxiety of his body without air slowly creeping in along with the pleasure.  She could no longer control herself and began to slowly swallow water down her throat through her lips. She couldn't breathe - she was running out of air, and it was becoming difficult to think. The moment of orgasm was approaching for both, but he began to choke.
His lungs demanded air and tried to swallow water, but he covered his mouth with his hand. She laid on top of him and he was completely inside her chest, he could not see anything, only air bubbles were coming out of her chest. They both moaned with the pleasure of the buzz, her body shuddering with climax and ecstasy. 
She, in turn, moaned in ecstasy and agony from suffocation, her pussy cumming and her body beginning to shudder uncontrollably from orgasm. She lay down on the floor next to him, pulling away from him, shaking in ecstasy, enjoying every moment of the orgasm her dive-weary body was giving her. Her hand reached for her throat as she wanted to cough, spewing the last bubbles of air from her mouth. The girl's closed eyes opened wide again, and she inhaled convulsively with pleasure, but her lungs were now filled with water. A few seconds later, her movements became sluggish, her hands just floundered around her vagina and mouth, instead of bubbles there were only moans and quiet gulps... Her body gave up and she started swallowing water into her lungs, it became heavier, but she didn't care. Her body floundered in the water, and her arms and legs trembled. With each sip of water, she became weaker and weaker, her breaths of water became slower and smaller.
He screamed, screamed into the water, a deafening moan of pleasure filling his last air.  And the loser boy gulped down the water in a smile of pleasure, a white stream of water gushing from his cock around him, his face turning blue, his movements becoming feebler, his eyes closing. After a few seconds of unconsciousness, his eyes opened weakly again, the pain from his water-filled lungs began to seep back in, almost waking him from his peaceful sleep. Her brother was only awkwardly enjoying his orgasm while drowning underwater. 
The two naked bodies were together, both lying in each other's arms, almost unconscious. The orgasm threw away the feelings of anxiety and self-preservation in the tired minds of the brother and sister. He hugged her and rubbed his face into her chest, and she, barely conscious, stroked his head as long as her consciousness allowed. He could not see anything, but he felt her warmth on him before consciousness left him.
...
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