This fanfiction is a novelization of the work done by Himura Kiseki on Getsuyoubi no Tawawa.
It was another Monday. A bleak one. As always. One of these Mondays when you don't wanna go to work. Onii-san, a salary-man was waiting in the train station, already exhausted just by the thought of working. Even though he knew that he was lucky to have a job during these times and right after university, he couldn't help but to feel bored and reluctant. Every Monday is the same nowadays. And every Monday shares the same anguish as always. He regretted doing nothing but sleep during the weekend and already loathed about the endless amount of work waiting for him on his desk. At that very moment, he just wanted to go home.
But something has changed lately. Something had been soothing his soul. More specifically, someone had. That person had the power to change all of his Mondays. And today, she'll appear again, he hoped. This young girl will arrive smiling, unaffected by the dreary atmosphere of the adults around her. As he was thinking about her, Onii-san saw her walking down the stairs in a rush, her chest filled with excitement. In her hurry, she missed a step and managed to barely stand, her bosom shaking heavily. Each other's eyes met at this moment and a smile appeared on both of their faces as they were recalling the event that made them meet.
She was Ai-chan. Well that was the nickname she told him. He thought it was a cute one as "Ai" meant "Love" in Japanese, but at the same time he thought it was also a weird childish nickname to have. He didn't know her name and it was the same for her, referring to him as "Onii-san", meaning someone with a strong bond of affection, almost as a big brother. Cute.
Cute was also the word he would have used to describe her. But not in the same way as everyone would have used it. He truly believed she was beyond perfection. Never in his life he would have thought meeting such a beauty. Her eyes were big, teeming with life and joy, sparking on her well-proportioned and beautiful face. Her smooth hair was kind of short, just above her shoulders and fashionably braided. Her skin was just as pure as the snow, spotless of any imperfections that normally afflict people of her age during teenage years. She used very little make-up, just enough to accentuate her natural beauty. Her colorful eyes of course but also her perfectly drawn lips, always stretched into a smile. Her smell remembered him of the long walks in the tall grass or in the forest, a scent of comfort and appeasement. She was also quite short, even for her age, just about 1m50, leaving her 10cm below her female counterpart, making Onii-san topping her by about 25 to 30 cm. She had a very slender figure, not showing a lot of fat anywhere, making her look like a fragile angel, even though she was not lacking any confidence.
But that young teenager had one more card up her sleeve. To top all of her youthful beauty, she was exposing to the eyes of everyone her most striking and important characteristic. To everyone that would have met her by any chance, their eyes would have been drawn towards her chest. If Onii-san wanted to explain it to someone else, it would have been hard to explain how huge her bosom really was. To put it simply, it was massive: the size of her breasts had reached an enormous scale. Onii-san had never seen a girl or even a woman with such a gigantic bust. Each one of her large assets was almost as big as her head. Probably filling up her bra with an unthinkable letter, her chest stretched her school white shirt with difficulty and her slender figure and perfectly flat belly made her two mountains even more noticeable. But she showed no fear of embarrassment, even though she knew where all of the attention was directed to everywhere she went. One could even sometimes see a faint smile of pride stretch on her face. But she was not exposing any of her cleavage or dressing in any provocative manner, she just knew that the sheer size of her chest was just enough on its own to catch everyone's attention without having the need of provoking it. Puberty had struck her and struck her hard. She was exactly his type as a student, a true goddess of perfection. The ones that are only true in the comics or mangas. It's almost as if someone asked a bunch of heterosexual boys what they were looking for in a girl and put the result of the survey into a tight school uniform. And she knew it.
But let's go back as to when both of them met. That previous Monday was particularly bleak. The ones where you just caught yourself about thinking to end it all. The ones that start off badly with a late train. Onii-san's train was already usually a packed one and he knew that it would be hell soon. When he went into the train, he couldn't help but notice that it was full of students. Summer vacations must have been over already and they were resuming school. And then, as an act of miracle, he ended in front of her angel, pushed by the other passengers. She was against the windows and he did his best not to have contact with her. But the more they passed stations, the more the pressure behind him began to grow. Soon, his belly met her chest. The young girl did not seem to have any expression as it seemed usual for her to have her bust meeting other people's bodies but Onii-san was sweating profusely. The pressure kept increasing more and more and Onii-san's belly kept pushing against her soft mountains. The more the pressure increased, the more her chest began to bulge, crushed against the man's body. The moment came when Onii-san was completely pushed against her bosom and found his torso leaning above her, hiding her slightly. The pressure on his belly was enormous with the size of her chest pushing him with a tremendous force. Her breasts were so big and they were so good at absorbing (and reflecting) the force Onii-san was putting into, that no other parts of their bodies were in contact. More than their sizes was their softness. They were softer than pillows or feathers, squeezing gently as he was pressed against them. The train movements did not help in making her two monstrous mounts jiggle against him. Against him, he could feel all of the micro-changes of her bust's flesh spreading. And yet, he could feel the incredibly firmness of her perky chest pushing back against him, a sign of her youth. Ashamed, the bulge in her pants that started to grow as soon as he had seen her, finished his growth and Onii-san was doing his best to avoid his hips to touch her.
But this was bad. Really bad. This wonderful sensation could also lead to his doom if the idea to complain came to her mind. And what could he do? She was a teenager while he was an adult and she just had to drag him to a policeman with her breasts bouncing to expose him as a pervert. He was pretty sure he could go to prison for that. No, the more he was thinking about it, there was just one solution : he just had to leave without giving any information. Thinking about his business card, he looked at his breast pocket only to see that it was slightly coming out. The pressure of her chest pulled his shirt slightly downwards and the card was becoming more and more apparent. As he tried grabbing it, the train changed tracks and the jiggle of the two hills pressed against him made him drop it inadvertently. The card fell down and landed softly on her leaning chest. The young girl's eyes that were staring into the void grew with genuine surprise while Onii-san felt his heart stop and sweat drops falling along his chin. The busty girl tried to squeeze her arm up but while doing so, she moved a bit of her bust. The card very softly began to slide down, following the large curvature of her left breast and fell down at their feet.
- Ah sorry! she said with a cute voice while Onii-san was trying to stutter something about being sorry.
But before he could tell her to leave it down, the two mountains of hers began to move making his breath stop. The young girl was trying to crawl downwards to retrieve the card. She was trying to weave in and out but her enormous chest made it difficult for her to squeeze herself down in between Onii-san and the train. And yet, she kept trying, rubbing down innocently her monstrously huge breasts against him. Their sizes were filling every gap available between their bodies along the way. Onii-san was done for. The sensation was incredible but she will reach his crotch soon and he will be sentenced: he knew it for sure. Clearing out her path with difficulty, her breasts stopped just above his crotch region where Onii-san was trying all of his best to calm himself down but it was no use. A second later, the school girl managed to go down a bit further with a sigh and her overgrown bust met his stiff area. The feeling was amazing beyond any reason. He felt all of his private parts completely gobbled inside the soft tender flesh of this young girl. He was rightly positioned in between her two massive mountains, tightly squeezed against them. Onii-san gulped down with fear, disgusted by himself but the young girl's face remained hidden and he could only see the top of her head. He felt her hands looking around on the ground, searching blindly. Her chest was still crushing against him as she was searching for his card. Her slight movements made his private part alternatively buried into her left breast then on the right one. But most of the time, he was kept in between them as her chest was just exposing how immense it was. Onii-san always considered himself as a normally endowed person with no incredible aspects in this area. But yet, at this very moment, no matter how aroused the situation made him, no matter how small the young girl was, he could not help but to feel minuscule against these gigantic mountains that would completely swallow him with incredible ease.
As Onii-san was in pure heaven, the pressure went upwards as she was crawling back up. It lasted just as long as before as her breasts made it difficult for her to weave. As she was going up, Onii-san's mind began to panic. There was no way she could not have felt his condition down there. He had to leave right now and his wish came true when they passed a big station. The pressure behind lowered and the young girl went back up.
- Here you go! handing him over his card with a smile.
There was nothing in her eyes or smile that showed that she acknowledged what happened. Just cuteness and innocence. As the doors opened behind him, Onii-san, his face covered in sweat, rushed out, screaming "I'm sorry for what happened!" above the crowd. He left her with his business card and ran as fast as he could in panic. He ran around in the station, trying to get out for a couple of minutes when finally stopping at the end of stairs. While he was trying to bring himself up, he heard "Wait!" behind him. It was her. She was rushing down the stairs with his business card yelling about how he forgot it. But Onii-san's mind was elsewhere. He could only watch the perfection of the bouncing mountains happening before him. First, as one of her feet was touching the ground, her breasts went down, pushing with all of their monstrous weights inside her shirt exposing her collarbones. Then, as her momentum was slowing down, they were bouncing back up high, almost as high off her chin. Dazzled by this view, he did not see right away her stumble, only four steps above him. She fell downwards right on him. Onii-san remembered how the bouncing stopped and her two weapons reaching at his face, taking all of his vision. They crushed hard on his face as she fell over him and he hit the back of his head on the ground. He remembered the pain but most importantly the weight of her small body on him and her heavy bosom covering his face.
And that was how Onii-san met Ai-chan, in a very dramatic way. Soon after, Onii-san was taken to the hospital for a quick check, accompanied by Ai-chan. They kept apologizing to each other for the situation and they slowly got to know each other during their walk out of the hospital in the late afternoon. That was when the young girl, when asked to choose a nickname, replied with "Ai-chan". Onii-san learned that she apparently had to go to school early for her committee and that from now on, she would be riding the early train every Monday just like him. Thus, from that day on, under the guise of a "weekly check-up" about his health, they both agreed without telling each other that Onii-san would be protecting her from gropers and perverted people of any kind. With such a difference between their height, Onii-san would completely hide her from any weird looks. The reward was fantastic for him, being blessed to contemplate her beauty and shapes every Monday. This special moment when he could have her all to himself had become a sanctuary of an otherwise melancholic Monday morning.
And this Monday's morning was no different. Her joy and youth made him smile more than every other day from last monday. Both of them were worn out from their chit-chat when the speaker announced that her stop will be the next one. Ai-chan saw immediately the sadness appearing in his bodyguards eyes.
- Come on now, she said with a recomforting smile, there's no need to be upset. You're making me feel a bit guilty. Is it that tough to go to work every Monday?
- Adults have a lot to deal with, you know, replied Onii-san with a sigh. Is school fun for you, Ai-chan?
- Yes very! she replied, smiling with glee her eyes closed to cheer him up, that's great! But... I'd like to do something to make you feel better, like me, she said looking at his depressed face
It has been a few Mondays since Ai-chan tried to cheer him up. She tried a lot of different ways to help him: cracking jokes, telling each other's lives, talking about cinema or mangas, sharing some memories but nothing was making him truly happy. She knew she was bringing a lot of joy during their Monday meetings but something was still missing, something she could not really catch.
She paused, her pretty face thinking. A flash of light went through her big eyes. Recalling how they met, she knew exactly what would cheer him up. She knew which assets of herself she had to use and lucky for her (or him), they were quite sizable. She had never teased anyone in any way (at least intentionally) and now for the first time, it would probably be the right moment to use them. To cheer someone up. For a good cause.
Ai-chan lowered her eyelids and took a step forward, making her breasts to touch slightly his belly. Onii-san gulped down, it was the first Monday since the first one that he could feel again her magnificent bosom against him.
- Do you want to try dropping your business card again? she said very softly, with a slightly deeper voice.
- Wh-wha... stuttered Onii-san but he was interrupted by a shaking of the train that made the busty girl flesh jiggle against him.
- Then, I can pick it up and make you feel better... You know, just like last time, she said looking directly into his eyes.
Onii-san gulped it down loudly, shaking in fear for the first time since their first encounter. Deep down somewhere in her seductive eyes, he knew that she knew. Back then, she had felt it, his body reaction against her two massive weapons. She always kept it inside her head. Even though she was a teenager, she must have known what an aroused man's physical reaction was. But what was most concerning was that she did not seem to care. Or more specifically, she was not angry about it, just like she knew that she was bound to create such reactions.
- Wh-wh-wha.. Wh-what a-are you talking about? I-I-I d-don't remem-ber that at all.. he stuttered, sweating profusely.
- Your voice is creaking, she simply replied in a murmur.
The shift of tone was disconcerting. For weeks, she was appearing as a golden angel of purity and innocence, filled with joy and was now appearing as a highly seductive young woman, confident about all of her assets and using them terribly well. Another shake in the bus echoed in her chest against him. At that very moment, Ai-chan saw a flash of light in Onii-san, the same one as she had before. He was enjoying being teased. She never had done it before and these meetings could turn into something funny in its own way. Ai-chan could not help herself but to crack a smile, stopping her seductive attitude and stepping back from him. In this smile, Onii-san again saw pure joy as she now knew what he liked. But he also saw what appeared as pride.
- Oh I know! cutted short Ai-chan, I think I have a present for you.
She checked something in her bag with a smile while Onii-san tried to gather himself up.
- Here you go! Please hold out your hand! she said with a big wide smile and her eyes closed.
Onii-san held his hand out and she dropped a small object. It was a small round white button with four holes. He was pretty sure he had already seen the button elsewhere. Slowly processing what was the meaning behind it, he asked :
- This is...?
- A lucky charm for this week!
Still looking at her with a confused look, she placed herself on tiptoes, bringing their faces closer. The young teenager's smile turned into a proud grin and she pressed innocently her massive chest against his torso. Yet, even though the train was full and nobody would have noticed her doing it, there was still enough space to avoid people making contact with each other: she was doing it deliberately. The pressure increased more and more, crushing her mountains on him so much that he ended short of breath. She raised both of her forearms from either side of them, containing the flow of her flesh. This squeeze was as intense in strength as when she first met her. She was intentionally exposing all of the power of her huge assets. Bringing her face closer to a few centimeters from him with the same smirk, she hid her mouth with her hand and whispered very softly :
- It's the button that came off of my shirt last week.
Still crushing her breasts against him, Onii-san's eyes downed on her collar only to see that her shirt showed the same round and white buttons. A few drops of sweat started to drip on his face as he was imagining her stretching her arms back causing the button to fly in the air because of the tremendous pressure. He slowly put his hand on this forehand trying to calm himself, his jaw opened in disbelief. She was just perfection beyond any reason. This made the young girl giggled softly. Still pushing herself against him, she moved her shoulders half a centimeter on the right, causing her monstrous mountains to rub against him.
- Don't lose it, okay? she continued with her soft whisper.
Onii-san was not yet ready to respond, still trying to calm himself. Slowly, the teenager stepped out, removing little by little the pressure she was putting on him. While doing so, she continued :
- Use it to remember our time together.
It was only when she pronounced the very last sound of this sentence that the last part of her chest left him. Even though the message behind it was subtle, it was more than obvious what she wanted him to remember. Wait, "remember". What does that mean?
- Does that mean I won't be able to see you again in this train, Ai-chan? he almost screamed, anguished to just imagine that such beauty and perfection would leave him alone. Her eyes disappeared behind her beautiful hair and he could simply watch her delicate lips replying :
- Unfortunately, I'm gonna have to change it again.
- I see... he said sadly.
For a moment, both of them remained silent, hearing the loud rumble of the train and people talking. Onii-san was saddened to think that these were the last moments he was going to spend with Ai-chan. The young teenager remained impassive, her eyes still hidden behind her fringe. Only a few seconds later, the train announced her school stop and Onii-san felt his heart beating faster in his chest. He couldn't tell why, but something was off in the way she delivered her statement. What was she referring to when she said she was going to "change it again". He assumed that it was the train but why would she change it in the middle of a school year?
- Wait... What are you talking about exactly? What are you going to change "again"? he asked, as the train slowed down and he could see the platform behind the window.
He knew it was a spot-on, because she saw her cracking a smile before ending in a cute giggle. She raised her head, looking at him. Her look was not sad at all but instead filled with joy and happiness of seeing her trick worked.
- Well you see, Onii-san... she said as the train stopped and the doors opened.
Students of her school gathered around the exit, leaving one by one the train stranding them alone in the middle of the confusion. Her smile grew wider and wider and her face shone with glee and jubilation. She stuck out her chest, filling air in her lungs, making her assets tremendously huge. They soon reached an incredible volume, both of them slightly bigger than her whole head. The fabric stretched with difficulty and one could have easily imagined the gaps in between her shirt's buttons hidden behind her tie. Her shirt was completely flatten on her curvy body and Onii-san could easily see the shape of her bra underneath it as large creases appeared trying to contain the enormous volume of her two massive mountains. Onii-san could not believe his eyes and his jaw dropped. But each second was more unbelievable than the previous one. The shirt was so tight that he could see bumps above what should be her bra cups. She was overflowing…
- From next week onward, I'll no longer be Ai-chan but Jay-Chan! she said enthusiastically, shining with glee and pride.
While Onii-san was trying to understand what all of that meant, she very discreetly pointed a finger to her massive chest without breaking eye contact. And that's when he understood. "Ai-chan" never meant "love" but was actually referring to her cup size! She was an I-cup ("Ai" in English) and was now growing to become a J-cup. Ai-chan's smile grew wider and wider as she saw him realizing what was happening. Her finger still pointed discreetly at her chest, she innocently made them jiggle by a very soft movement of her shoulders that only big-breasted girls know how to do. Onii-san saw her huge chest jiggle heavily in her tight small bra, painfully stretching her shirt as the masses of flesh were moving. The young girl winked at him, with a joyful spark in her eyes. Onii-san's jaw gaped open. He knew she was a well-endowed teenager but he never thought that it would be that much. She was way above any of the schoolgirls in the train. Most of them were probably between an A or a C (or maybe a D for the luckiest ones). From what he could tell, Onii-san never saw in his whole life a bra above an F-cup in an underwear shop. And yet, she stood here with her massive J-cup chest, shadowing her competitors by 6 to 9 cups ahead. She was not just having the biggest chest but she was also way too much ahead of them than even the curvy girls looked flat compared to them.
Seeing that she had perfectly done her trick on him, she headed out of the train. She purposefully made no attempt to stop her tremendously huge bust from bouncing at each of her steps. When she was outside of the train, the teenager spinned to her left, showing her profile silhouette to Onii-san. Her chest was still bouncing with all its massive weight in her shirt when she waved her hand at him.
- See you next week on Monday!