Niklas and his devil sisters (Pt 1)

Niklas was 13, almost 14 years old and played with his school friend Jakob in the garden with their new drones. They still had 3 days until the summer break and both only relax in their swimming trunks in the garden. In the garden was also a small inflatable pool, which was used in the last days very often. Niklas also has two younger sisters - Leonie and Sarah - twins - who were now 10 years old. This weekend his uncle and his aunt visited the family with their daughter Sandra. And while the adults were down in the town in the beer garden, the children were still at home. Sandra was a good year older than Niklas and Jakob, but she was in the house and occupied herself with the sisters of Niklas. They talked about a lot of typical girl stuff (Leonie recently got her period and has a lot of questions about it) like school, boys, first kisses and.... Also the TV was on. Sarah told Sandra that her brother Niklas and his friends weren't fair to his sisters from time to time, for example when they wanted to go swimming in the pool. So they pressed their heads under water or shot ice-cold water at the two girls with their water pistols. But they were strong and much older and the two twins had no chance against them. Sandra wondered a little and asked Leonie and Sarah if they knew anything about the boys' weakness? Both denied it and asked what Sandra meant.

So Sandra began to enlighten the two younger girls a little more deeply about the differences between boys and girls and that these special boy parts of which they were so proud would be the weak point that could turn their strong brother and his friend into weak, willing lambs. This wasn't entirely new news for Leonie and Sarah, as their mother had already told them this fact the weekend before last on a television evening, but they want to know much more about it, as they hadn't quite understood everything at the time. Sandra took the remote from the TV and switched through the channels until she found the right one where there was a show of funny home videos. She told both girls to watch the video and after a few minutes a video of the kind seen in almost all episodes now began with a boy on a skateboard trying to do a stunt on a railing and, as so often happened, the board and his feet slipped away. He slipped with one leg left and the other right along the thick railing and landed with the middle exactly on the wide handrail. A short scream and then the boy rolled up to a ball on the floor. Sandra asks both girls if they have now seen and understood what she meant. Leonie and Sarah looked back with big eyes, but with a brief reminder of what their mother had told them and answered more than a question, "he's in pain where the little babies live? So Sandra turned her head to the window, saw Niklas and Jakob playing wildly in the pool and told both girls that now was the time for a good retaliation. But Sarah and Leonie still didn't understand and looked at Sandra with question marks in her eyes. Leonie told her that Niklas didn't have a skateboard. So Sandra went a little deeper into the reasoning. First, it was summer and very warm outside and since both boys did not wear much clothes, just a thin swimsuit, which would make it much easier to fix the goals. In addition, her brother and his friend would have an almost perfect age to be neither little boys nor real men. She asks if the girls had noticed that their brother had become much taller in his pee area in recent months. Both confirmed and also told Sandra that when her mother had first explained to her about the boys and the little babies and they could see at Niklas that he got a little beard down there and also that he hasn't been bathing or showering with the girls for a few weeks anymore, like before. And Leonie added that this morning she still thought that the two boys' swimming trunks were actually much too small and why they didn't ask their parents to buy a new one. But she continued to ignore it. Sandra smiled again and told them that it was also a fact that she was at the perfect age. Her brother's little bullets now grew during puberty, just as girls get their "strawberry" days at this stage. This phase starts between 7th and 8th grade and the puller and the small balls of the boys would get bigger in a very short time. And by this growing effect two things happen: 1. the underwear and some swimsuits were usually too small within a short time and their steadily growing balls were pressed very strongly into these clothes and as a 2nd point these growing balls became extremely sensitive during this short time. One or two years later this sensitivity decreased but was not lost. And that is what she thought before that Niklas and Jakob would have the almost perfect age, since their balls were growing just now and were also very sensitive. A perfect phase for a girl to repay an injustice.

She explained to Leonie and Sarah the plan and steps for both and gave them some clues that the best way would be an unexpected and surprising attack on these special parts of the boys. After a few minutes she finished her devil's plan and both girls could hardly wait for the moment of their revenge. So Sandra suggested that they all start to change their clothes too, ready to jump into the cold and fresh pool. Just 1 minute later, Leonie and Sarah were standing down the stairs again, ready for their first experience against their brother. Sandra arrived 3 minutes later also in a nice blue bikini and she looked very good for her 15 years. So all three girls went into the garden where the boys were still playing in the pool. Sandra walked on the sunbed, pushed the sunglasses over her eyes and lay down on it. Both boys naturally interrupted their wrestling game and became aware of Sandra with her bikini and the two normal but tight breasts inside. But at the age of 13 they were typical boys..... Sandra suppressed a light smile, knowing what was about to happen, and took her smartphone to pretend she was ignoring everyone to surf Facebook or elsewhere. In reality, she activates the camera and configures the resolution to 4k to record a very good video of the next few minutes and zooms in a bit to get the best picture. Meanwhile Leonie and Sarah had dragged the garden bench into the pool and tanning area and when Niklas asked them what they were doing, Leonie replied that they wanted to play a fun game together and if he and Jakob could come out of the pool to join in. Not to be the bad brother in the presence of Sandra, but the nice and helpful brother who liked to play with his little sisters, he agreed and left the pool with Jakob. Sandra noticed through her sunglasses that both her swimming trunks were wet and very tight and that water was flowing down her legs. She remembers what a little boy Niklas was during her visit last summer and how well grown Niklas was now, especially between his legs. Wow, was the first thing she could think about this big bulge of Niklas and his friend Jakob. She also secretly takes a few photos with zoom, while still completely absent simulating a focus on her smartphone. Huh, she felt some tingling between her legs as she thought about the next minutes as she had started about 2 years ago to pay attention to this particular region of boys and the possible power and control girls have over it. So it was a very welcome opportunity when Leonie and Sarah told her about their brother's deeds and asked for help. She was able to gain some experience in the past school year, together with two of her friends, but that will be a different story.

The garden bench was now positioned between the pool and Sandra's sunbed, so that Sandra had a slightly slanted view of it. She had previously instructed Leonie and Sarah to position it as this angle was perfect for a good video. The girls now asked Niklas and Jakob to go to the back of the bench. Then they instructed the boys to kneel down and put their upper bodies through the space between the backrest and seat, with their arms stretched forward. Both boys followed the instructions and now present Sandra with their butts as their upper bodies lay on the seat of the bench and their arms and heads hung slightly down in front of the bench. Now Sarah went to the front of the bench with a few ropes in her hand and told the boys that she also had to fasten her hands to the bench for the game. Leonie worked on the back and also used some ropes to fix her brother's right knee on the right side of the bench and Jacob's left knee on the left side of the bench. She then tied the knees together in the middle and fastened it to the backrest slightly above it. Niklas and Jakob wondered a little about this game and the things the Niklas sisters did with them, but by watching Sandra, they didn't want to show fear. When the fixation was complete, the girls went to the front of the bench and declared that each of them would play this game with each of him. Then they went behind the bench again and looked over at Sandra with big eyes and a fascinating anticipation. She only nodded to the two girls inconspicuously, so that they remembered what Sandra had explained to them before in the house.

Sandra was really fascinated by the view of the two boys with their butts stretched out in their direction and their legs tied to the bench, so that both boys kneeled with well spread legs. The bulge between her legs shows very clear contours of two large balls pressed into her too small and wet swimming trunks. This was a perfect condition because they could not move to the side. Huh, the tingling in their stomach got bigger. She nodded to the two girls again that they should take a close look at their two goals and that it would be very important to hit them right the first time. She had explained to them that the best way to kneel in this position and from behind would be the instep and there would be two techniques. First kick with full force and after contact with the targets, the instep must press the targets against the pelvic bone for at least 1 second to prevent the target from slipping away from the instep. This would increase the effect. The second technique, but a complicated one, would be to hit the targets with full force, but to stop the movement of the foot immediately after contact and avoid pressing on the pelvic bones. This is a technique from Asian martial arts and would only transfer the energy of the kick to the targets, but through the very short contact the energy cannot flow through the pelvic bone or back to the girls foot. No, the force will swing within its targets and only slowly decompose. This would lead to a feeling as if several kicks per second would be performed on each swing within the targets. Both girls had listened with great interest and since Leonie was already playing football in the club at school, she decided to try the second technique directly while Sarah would go the normal way. Sandra repositioned her smartphone and waited eagerly for the next seconds.

Sarah and Leonie lined up behind Niklas and Jakob respectively. Leonie stood behind her brother, while Sarah stood behind Jacob. Then Leonie spoke briefly to Niklas that they would now have control over the boys and they may not refuse any wishes from Leonie or Sarah or ever harass them again. Niklas replied in a mocking voice that he and Jacob were also much stronger and older and they would do anything they wanted and whenever they wanted, and no little weak girl could change that fact. Sandra starts smiling again when she hears these arrogant words, and Leonie answers directly that they would both show them how much power his little sisters have. And that he would think about his words again after this game was over.

Then, with a concentrated look at the well visible big balls perfectly positioned between his spread legs, she took a step back and then, like a taut bow, her right foot shot very quickly forward to get perfect contact in the middle of the two. And as if training it for a long time, her foot stopped moving forward at the moment of contact with the two balls without pressing them against Niklas' pelvis. Through Niklas' wet swimming trunks there was a beautiful and loud noise as she hit her target. In the meantime, Sarah couldn't wait for her sister to finish because she was excited to do these exciting things with a boy. Like Leonie, she focused her gaze on the equally good size of Jakob's pieces between his wide spread legs and was only a little surprised for a moment when she saw a small upward movement from the right ball. But that was only a part of a second before she took two steps back and with a short run she brought her foot with all the strength she could muster into her goal. As her foot climbed up until it was stopped by a hard pelvic bone, she felt the slightly warm and bulging nuts now pressing harder on her instep. That was really fantastic! Leonie and Sarah had hit their target almost at the same moment and the sound of both impacts on the wet Speedo swim pants sounded like a short shot with an echo.

Only 1-2 seconds later the effect and surprise reached the brain of Niklas and Jakob and both screamed out loud as an incredible pain exploded into their groins. She tried to move her hands involuntarily into her tortured groins to hold the vibrating balls and reduce the still growing pain inside her, but due to the firm arms this was impossible. Also the 2nd instinct to close the knees was impossible and it looked like a little funny fight between Niklas and Jakob as each of them tried to close his legs with the tied inner knee. Sandra was very excited by this scene as both boys moan and moan in their fixed position and shake their bodies to try to escape from this uncomfortable position. That was really great and the video would be the hit among her friends when she was back at school. Leonie and Sarah watched this scene with tension, interest and amazement and Sandra could see how there were more and more devil's plans in the minds of both girls now that they had learned how to control a boy and how weak he was after this simple attack on the bulge between their legs. Oh dear, this will be a hard holiday time for her brother, as well as for the girls' classmates or other boys of the same age in her neighborhood for the next few years. Sandra could already see that, but with a little inner smile.

After a few minutes of interesting observation of the two boys, Sarah and Leonie changed position with a slight giggle to stand behind the other boy, who was still tied up on the bench but no longer moaned so loudly. The boys were still concentrating on their inner pain, which was diminishing and ignoring the two little devil girls who were going back with their right legs at that moment to perform the second attempt on the boys' packs. Sandra could feel a bigger tingling sensation and a little moisture between her legs and the humming now grew more in her body as she saw these great scenes. She already knew from her last year experience that the second kick to a boy's testicles was much more painful than the first as her balls had swollen from the first kick and were now squeezed even tighter into the tight Speedo swim pants. And she also noticed that both boys would absolutely not expect the next kick, but then maybe the next one. Ok, Leonie and Sarah first told the boys that each of them would play the game with each of the boys, but with a look at the faces of these little girls she realized that both girls would not keep this promise and would follow with this new experience a third, fourth or fifth time for the boys before Sandra had to stop it. She didn't want to permanently harm her cousin's baby makers and she would also have to talk to Leonie and Sarah that they shouldn't be too hard on their brother in the next few weeks when they might want to be nephews or nieces later when they grow up.


But after today she knew very well that just for the 3-week camping holiday starting tomorrow, in which she unfortunately could not participate this year, a hard time for Niklas and Jakobs big eggs dawned.


.......to be continued