Two times two is four.
She crossed the green courtyard, greeted some elderly women at the entrance, and quickly went up the stairs. Jangling her keys, she entered the hallway and immediately heard Natasha's laughter coming from the slightly open door of her parents' bedroom.
— Something's way too cheerful for studying!" thought Alyona, kicked off her shoes, and, taking the camera out of her purse, tiptoed towards the bedroom.
She decided that compromising material on her sister would never hurt. Whatever that student was doing in there, she probably wasn't laughing that hard over equations! And their parents had even tried to leave Alyonka at the dacha, standing guard over the peace of Natasha, who was supposedly immersed in her studies.
Suddenly, from the far corner of the bedroom, which Alyonka couldn't see, another guy emerged! He was slightly shorter than the one Natasha was so enthusiastically occupied with. His black hair was cut short, his athletically built, tanned body—Alyonka even admired it—was also unburdened by clothing. He climbed onto the bed, took the girl by the shoulders, pulled her off his friend's cock with a bit of effort, and laid her on her back on the sheet. Slipping the straps off Natasha's shoulders, he pulled her bra down to her stomach and covered her breasts with his palms. While he stroked her prominently protruding, large dark nipples, the first guy knelt down and positioned himself between the girl's legs. He began kissing and licking her moist slit, sometimes trying to penetrate as deeply as possible with his tongue, sometimes tickling and capturing her clitoris with his lips and kissing the insides of her thighs. The older sister threw her head back, breathing rapidly, crumpling the sheet in her hands. She crossed her legs behind her friend's back and periodically tried to press him harder against her, pushing her heels against his shoulder blades.
Alyonka, as if spellbound, took a deep breath, licked her dry lips, and took several pictures of the scene that had so shocked her. The flash was off, and no one in the room heard the shutter clicks.
Meanwhile, the three guys on the parental bed changed positions. Now Natasha turned onto her stomach and, holding it at the base, took as much of the not-so-small cock of the muscular brunet sitting in front of her as she could into her mouth. And the tall guy remaining behind her decided to move to more active actions, carefully spread Natasha's legs, and, stroking her round butt, guided his tool into the already juice-dripping cave. At first, he entered slowly and smoothly, but soon began moving faster and more energetically, sometimes plunging to the limit, sometimes pulling out as much as possible, so that only the head remained enveloped by her labia. Natasha, in rhythm with these movements, lowered and raised her head on the second guy's cock, licking him more and more actively, approaching her own peak of pleasure with every second.
The guys kissed their beloved in turn, and all three leaned back on the bed.
Catching her breath, Natasha slipped out of the bedroom to the bathroom, not even noticing her younger sister, who had recoiled into the shadow of the hallway.
Alyonka was trembling. Her mind was in turmoil. She was overwhelmed by desire; unable to control herself, obeying some incomprehensible feeling, she stepped into the room.
The guys sat up on the bed and stared at Alyonka. She stood barefoot, in a short skirt and a bright tank top. Crouching down, she placed the interfering camera on the floor, straightened up again, and began pulling the tank top over her head, slowly freeing her arms and her long hair pulled into a ponytail. When the bright fabric fell on the floor next to the Canon, the guys sitting with their mouths open saw small, neat breasts with protruding pink nipples. The slender body of the girl standing before them in just a skirt looked incredibly enticing.
— Wait!" Natasha stood in the doorway in a bathrobe draped over her shoulders. "Let me start," she smiled, walked over to her sister, and hugged her around the waist.
Her hand ran over her thigh, lifting the skirt, and slipped into her panties. Natasha ran a finger over her friend's clitoris and slid a phalanx into the hot, slippery hole, wet with abundant lubrication. Alyonka began breathing irregularly, closed her eyes, and pursed her lips as the finger went deeper.
— We need to punish my disobedient little sister a bit," said Natasha.
She pulled her finger out of Alyonka and made her lie on the bed. Then she opened the robe and, pinning the girl's hands with her legs, sat right on her face. Alyonka gladly accepted the rules of the game and, taking a deep breath, got to work. Natasha had just been in the shower, and her pussy smelled pleasant. The girl's tongue fluttered all over her sister's clitoris, and when she licked her vagina, a drop of semen flowed into her mouth.
— What about your exams?
— Took the last one yesterday. The boys helped me prepare," said Natasha, playing with the beginning-to-arouse cock of her friend.