There were always so many people that let their potential pass them by in favor of momentary satisfaction. As she walked down the hall toward the art club’s room, out the windows, the beautiful high school senior saw more students loitering or leaving the school grounds while a smaller percentage stayed to pursue their club activities. Forgettable boys chucking with one another, arms draped over each other’s shoulders like carefree children, and girls giggling with one another likely talking about a new sweets shop or the like. Couldn’t they see that these were the most important, formative years of their futures? Squander it now and you’ll be playing catch-up for the rest of your life.

Though, it wasn’t like she had time to worry about every student in the school, not with how little time she had left in high school. Rather, it was the state of the club she’d have to leave her only kouhai after graduation that was on her mind. I realize now that he is serious and diligently practicing and improving his skills, despite that Nekomimi girl and her friend's influence. The humiliation she suffered during the cultural festival was still fresh in her mind, but seeing the love and passion in her underclassman’s art was worth the eye-opening experience. However! That doesn’t mean I’ll hand my kouhai over to that Nekomimi girl that easily. I may not be as active with club activities these days, but I am still the art club president. Turning the corner, she looked into the mostly empty room where the brown, fluffy-haired boy sat at an easel. Looking to the bottle in her hand, the purple-haired third-year nodded to herself. I need to be sure to have no doubts when I leave. Can I leave the art club in his hands, and can I trust that Nekomimi girl to stay with and motivate him to be his best self? Don’t disappoint me, you two.

Throwing open the door, her abrupt entrance startled the timid second-year boy, causing him to look up quickly. “Na-Nagatoro-s-!? O-Oh, Buchou. What are you doing here?”

Good, he’s expecting her to show up today. “Do I need a reason to come to my club room? Or do you believe I don’t belong here?” She questioned, crossing the room and standing behind him as she inspected his work. Hm, since it’s not of that girl, this must be a practice piece. The linework and shading are well done, but there is little love to be found in it.

However, what she failed to notice as she scrutinized his progress what that her large bosom was resting on the back of his head. While the school’s white, button-up shirt kept her chest contained, straining to do so though it was, her lack of a bra meant the marshmallowy soft breasts spread out over and squished into the curve of his head. The warmth of her body had little barrier to passing into his.

“O-Of course n-not. I just th-thought you’d be busy w-with-” Flustered at the intimacy that wasn’t entirely uncommon for the bold and shameless woman, the bespectacled boy tried to move when a bottle of milk was held up before him.

“I suppose I really was a bit hasty before. That Nekomimi girl was right, you are working diligently all by yourself here. Sorry your senpai are all so unreliable.”

Taking a drink of the creamy, sweet beverage, the scruffy-haired boy shook his head. “N-Not at all! I learned so much from you, Buchou. I’m grateful to have had… s-such a… huh?” An overwhelming sense of fatigue washed over him as the room began to spin. Falling back into the busty girl’s embrace, the timid boy looked up with the last bit of his strength and saw her crimson eyes show no sign of surprise or concern for him. Instead, she smiled gently at him. His confusion in his last moments of consciousness wasn’t in panic, though, but a sense of betrayal.

“Forgive me, Kouhai.” She said as he passed out in her arms. Running her hand through his bushy hair, she looked over to one of the art pieces he had done of the troublesome first-year girl that hadn’t been stored away yet. Selfish as it might be to have ignored my responsibilities towards you for so long, just leave everything to me. I’ll take care of everything, and even if things don’t go as planned…

Standing up, she left an envelope on the stool he had been using before gathering their things and leaving with him.

I’ll be waiting, Nekomimi.

*** The Next Day ***

Looking at her phone as she walked down the street, the dark-skinned high school freshman looked around the usual route she took to school. Her long, smooth black hair flowed in the chilly morning air, but the bounce in her step was subdued when she didn’t see anyone around. Puffing out her cheeks, she sent another message to her Senpai.

Senpai hasn’t responded to me at all since last night. Is he okay? Thinking of her wimpy, submissive upperclassman, Nagatoro blushed a bit. If he were sick in bed, she could go visit him, maybe in a sexy nurse cosplay with a super short skirt to tease him a bit. However, him being sick didn’t explain the silent treatment. Wait, he didn’t ruin his phone again, did he? Remembering the time she accidentally pushed him into the river, even though she had long since apologized for that it was one of the times she still felt guilty for taking her teasing too far. I’ll stop by the art club room before classes to check up on him. Though she couldn’t explain it, her heartbeat quickened and there was discomforting feeling in her stomach. Her instincts were telling her something was off. Picking up her pace, the slender, petite girl hurried to school.

The sense of unease only increased the closer she got to school, and then the art club room, and she didn’t run into her hopeless Senpai. Though she could have been ahead of him, so waiting as long as she could in the club room was also an option. When she finally did arrive to an empty room, she went to sit on the green couch she brought from the handicrafts club but noticed that her teasable Senpai had left his easel and art utensils out.

“Geez, Senpai. How careless can you… huh?” As she was about to clean up for him, she noticed an envelope with the word ‘Nekomimi’ on it. “That Usagi… What is she up to this time?” Opening the letter, she glowered as an image of the art club’s absentee president flashed in her mind with that same stern, indifferent face that she always had. “A letter of challenge? To decide who is more fit to take care of Senpai? What is she going on about? Are we even allowed on the roof? Wait. She wanted to do this yesterday! But I was busy with the swim team yesterday. That stupid Usagi! I bet she thinks I chicken out or something. When I find her...” Storming out of the art club room, the ravenette went in search of the surprisingly oblivious woman.

However, she couldn’t find any sign of the purple-haired third-year or her brown-haired senpai anywhere in the school throughout the entire day. Breaks and lunch, even after school, neither of them were at school, which only frustrated her more as the messages she was sending to the timid, bespectacled boy were all still being ignored. Her ‘bad feeling’ only got worse throughout the day. She finally got a lead on where the bullheaded woman lived, as the Sunomiya family lived next to the shrine on the edge of time.

*****

Approaching the house on the property of the town’s biggest and most prominent shrine, the Sunomiya Shrine, Nagatoro was greeted as she approached the front door to it opening as the purple-haired girl crossed her arms under her impressive bust, in nothing but a towel, and scowled at her. “What are you doing here, Nekomimi?” She asked as her cold crimson gaze met with the girl’s fiery amber glare.

“To get Senpai back! I know you have him here somewhere, you stupid Usagi.” The ravenette replied accusingly, pointing a finger into the third-year’s face, but blushing from the brazen, immodest display. “And put some clothes on! Senpai is too pathetic and gross for you to be walking around naked.”

“That is none of your concern anymore. I’m disappointed that you wouldn’t even come face me yesterday, but I’ll be sure to guide and protect my kouhai properly from now on.” She said, as she went to close the door. “I’ll still recognize that you served as good motivation and sparked his considerable improvement while I was negligent in my responsibilities to him. However, if you are just going to abandon him so easily, I’ll simply have to supplant you as his muse and educate him of the beauty of my body. If it’s Hachiouji, I’m sure he’ll capture my form wonderfully… once he gets used to seeing it at least.”

“Huh!? What are you going on about? ‘Abandon him’? Senpai knew I was busy with the swim team yesterday! Didn’t he tell you? Wait, did you kidnap him? Where is Senpai, Usagi?”

Staring at the smaller, slender girl, the nude artist brought a hand up to her chin as she contemplated for a moment. Oh! That’s why he sounded so surprised before he even realized it was me. I had heard that she visited the club room every day, so I didn’t consider the possibility of her not. Though the shifts in her expression as she replayed how her interaction with the scruffy-haired boy the day before went in her mind were subtle, the only evidence of her realization of the mistake she made was the slight blush on her cheeks. The art club president turned and walked a bit further into her home. “Well, since this is my mistake, I’ll give you another chance. Follow me.”

Frustrated that she’d take a simple misunderstanding this far, Nagatoro silently followed the towel-clad girl to her room and sat down as she excused herself for a moment. The lack of many decorations made the room feel like it belonged to the strict woman, though it didn’t exactly feel like an artist’s either. The books on the desk and shelves were reference material and guides on different technical skills, but there were no art supplies to be found anywhere. She did, however, see the bunny-girl corset that she and her friends forced her to wear when she lost the competition during the cultural festival.

Returning with a single cup of milk, the purple-haired girl sat across from her guest, neither offering her the beverage nor drinking it herself. “It appears that, when it comes to my kouhai, I am prone to making hasty decisions. Since I believed you abandoned him yesterday, I began the process of trying to shift his motivation from the muse known as Nekomimi-no, ‘Nagatoro Hayase’ to a new muse, to ‘Sunomiya Sana’.” Motioning to herself, she reached over to a stack of art-focused magazines, and pulled a couple out from the middle, placing them on the table. Unlike all the other literature in the room, however, these magazines featured articles on fashion tips, relationship and health advice, and most prominently, how to appeal to a man to get his attention. “The wisdom in these pages is quite effective.”

Picking up the magazines in an embarrassed panic, Nagatoro’s imagination began to run wild of all the things the shameless art club president would do to her senpai given how little common sense she had in cases like these. She was very familiar with the type of advice that was found in such trashy magazines, so something as innocent as ‘casually brush against his arm’ she could see the purple-haired woman grabbing his arm and rubbing her body against him. Obviously, advice on the topic of showing a bit of skin was lost on someone that can parade around naked without batting an eye, but if she were to sit on the timid boy’s lap, bury his face in her bosom and force him to grope her, it would all be over!

Senpai’s a pervy virgin! There’s no way he’d be able to resist being smothered by a horny rabbit like her! Her face bright red, Nagatoro was about to say something to Sunomiya but stopped when she saw the woman rooting around in her cleavage and then pulling out something about the size of her thumb. A tiny, scrawny body with a scruffy head of hair that laid motionless in the older girl’s hand, breathing heavily. “S-Senpai!?”

“However, while I don’t believe one night is enough time to retrain someone, now that I’ve begun I’m inclined to continue. My kouhai has become quite respective to my body since last night, after all.” Smiling smugly, the busty girl caressed the exhausted, shrunken boy with her index finger. “But I suppose I could offer you one more chance to retain your position as his muse.”

Seeing her senpai so tiny and vulnerable, though, Nagatoro’s sadistic nature couldn’t resist teasing him as she reached across the table and pulled him a bit closer, poking at him. She was able to afford that Reduction Agent stuff? I’ve been trying to get some to tease Senpai with for months now! Look at him, so helpless and defenseless. Giggling, she ignored Sunomiya as she continued to speak, flipping the tiny second-year over and grinning down at him.

Finally free of the warm, heavy embrace of the President’s breasts, Hachiouji tried to catch his breath as he was moved around a bit more roughly than she had treated him since last night. Bu-Buchou?! Wh-What are you-!? However, as his eyes adjusted to the light and he was flipped over onto his back, he saw the terrifyingly cute smile of his preferred tormentor looking down at him, practically drooling with anticipation. Nagatoro-san?! Wh-What’s she doing here? What’s she going to do to me?

There were a few dreams he could recall of the petite, athletic girl flaunting her strength and superiority over him, even a fantasy-based one where she was the Demon Lord and trapped him at the end of his journey to torment him forever, but he had never imagined her being so much bigger than him.

“Senpai~ Look at you, Senpai. How gross and pathetic are you? You’re like an actual bug now.” Giggling, Nagatoro curled her hands to imitate the shape of a cat’s paw and brought it down on him as he tried to scurry away. He’s should be pretty durable, so I can play with him a bit, right? Gently batting him across the table to her other hand, her giggling turned to semi-maniacal laughter as he futilely tried to stop her. “Eww, look at you. You even move like a bug. Bug-senpai~”

As terrifying as it was to be so powerless because it was Nagatoro tormenting him, the brown-haired boy couldn’t stop the arousal that slowly made his groin grow hot and stiff. Wait! That’s right, I’m naked! His lust reminding him of his lack of clothes, Hachiouji prioritized covering himself with his hands instead of resisting the playful sadist.

An act that she was quick to pick up on. “Hmm? What’s this, Bug-senpai~? Are you trying to hide something from me?” The tanned girl asked, holding him down as she began to poke at his hands and carefully move them. “You can’t hide anything from me, Senpai~ I thought you knew that already.”

Realizing that she was being ignored, Sunomiya watched the exchange between the two for a bit, contemplating intervening but stopping herself. Right, I read it’s important to understand how a guy wants to be treated to get him to focus on you. So far I’ve only kept him in my breasts, but I could learn something from Nekomimi if I observe a bit longer. Watching and paying attention to how Nagatoro treated and spoke to her kouhai, if she wasn’t also seeing his more positive reactions to her mean comments she would have stopped her sooner. Unlike with her, there was a bit of resistance from Hachiouji, which was quickly, firmly, yet gently squashed by his tormentor. I see, I see. So sometimes, I should just ignore what he wants or doesn’t want and do what I want anyway. Very informative.

“You’re so weak, Bug-senpai. Maybe I should eat you up. I bet you’d like that, wouldn’t you?” Nagatoro teased, bringing her face down to him and sticking out her tongue as she held it close to him. Her breath washed over the struggling boy and his fearful reaction only made her want to do it more. “Think about it. At least you’d be ‘in’ a girl. C’mon, it’ll be fu-hey!” As she went to lick her senpai, though, the purple-haired girl had seen enough.

Pulling her kouhai from the grip of his, Sunomiya protectively pressed him into one of her breasts. “Sorry, but I can’t allow you to do that.” Even if he does look… N-No, no, I really shouldn’t. Not right now anyway. She thought, peeking at him as he stared up at her with a mix of relief and disappointment on his face. Tonight, maybe. Looking back at the cat-like girl as she glared and hissed at her, Sunomiya sighed. “So, will you take on my challenges or not?”

“Sure, but when I win, you have to take the Reduction Agent too and let me keep you for a day.” Her jealousy getting the better of her, Nagatoro didn’t even think to ask her to explain everything again and instead imagined sitting and rubbing her butt on the arrogant woman once this was done.

“Very well. Then, drink this. It already has the Reduction Agent in it and I’ve prepared the Counter-Agent as well.” Sunomiya replied without a moment's hesitation, sliding the cup of milk over to her challenger. “Otherwise, this is your last chance and I’ll keep my kouhai for a few more days.”

Any protest the tanned girl wanted to raise was silenced as she watched the older girl press her hand into her breast a couple times, smiling as her shrunken club member sank into her soft flesh. “Fine!” Grabbing the cup, she hesitated for only a moment before chugging the entire thing down in one go. The milk was very thick and creamy and had a sweet flavor that made it go down easy. Licking her lips, she rubbed her belly as the warm beverage settled in her stomach. “Mmm, that was pretty good.”

“Thank you. I… made it myself.” Bouncing her breast in her hand, Sunomiya’s blush intensified at the compliment.

“You wha-!?” Praying that that was a joke, heavy drowsiness subdued Nagatoro’s consciousness as she fell onto the table. Damnit… I hope she was joking. It was… really… tasty…

Going over to the unconscious girl before she could start shrinking, Sunomiya took out her piercings and hair clips so she could shrink without issues. “I’m glad I bought a few extra doses of this stuff, but I didn’t think you’d actually drink it. Now, I suppose it’s time I pay you back a bit for the humiliation I suffered at the cultural festival. But don’t worry. I’ll treat you fairly.” As the girl slowly began to shrink, the purple-haired girl couldn’t help but smirk a bit at what she had planned for her though.

*****

An odd, tingling sensation irritated Nagatoro’s senses as she slowly awoke. It wasn’t quite itchy or ticklish or pleasant, but it covered her entire body. Ugh… What happened? Oh, wait. That’s right. Where is that damn Usa…gi…? Opening her eyes, Nagatoro found herself on a vast expanse of processed wood, and behind her, something large and imposing was casting a shadow over her. As she slowly turned her head to see it, she immediately had to crane her neck back but was unable to see past the ginormous spherical object wrapped in a white, fluffy material. Scrambling back both out of fear and to better see the entire thing, the tiny, tanned girl already knew what she was looking at. As she gained a bit of distance, she was able to see over the gentle curve of the object and saw the rest of the purple-haired art club president who noticed the movement from her tabletop and looked at her.

“Good, you’re awake. I can give you a bit more time to become adjusted to your new size before we begin,” she said, but a smug grin spread across her face as she saw the apprehension in the shrunken girl’s eyes, “or if you wish to forfeit now, I’d understand.”

Narrowing her eyes as a throbbing vein in her temple motivated her to defeat the big-breasted temptress, Nagatoro pushed herself to her feet. “I’m not going to run for you! I’ll get Senpai back, just you wait.”

Nodding, Sunomiya took off her towel, laying her bare breasts on the table as they squished out a bit from the hefty mass of them, but retained a rounded, firm shape. The healthy luster of her mammaries conveyed the fullness of them and the sweet, rich treat that was held within. Both her areolas and nipples were a gorgeous shade of rose pink giving them a sense of youthful beauty and mature allure, and tiny droplets of her milk oozed out of the recently squeeze teat. Nagatoro was utterly dwarfed by the scale of the large endowments, but even the areolas were larger than she was now.

“Very good. As a courtesy for my misstep yesterday, I’ve made you twice as tall as my kouhai, so you should have an easier time than he did.” Sticking her fingers into her cleavage, the nude woman had to reach deep before she started to pull the shrunken man free.

Seeing her senpai’s scruffy head, though, Nagatoro initially smiled but then remembered that she was currently naked as well. “W-Wait! Wait, wait, wait! D-Don’t take Senpai out now!” Freaking out, her face lighting up bright red, the catty girl covered her exposed bits to make sure he didn’t accidentally see her.

Is she embarrassed to have him see her naked? Personality aside, she has an aesthetically beautiful body. So petite and cute, yet strong. Hachiouji, your insight is indeed much better than mine. I could have never looked past my biases and saw her as anything but a good-for-nothing, superfluous girl. Well done. Praising her diligent underclassman, Sunomiya stuffed him back securely in her cleavage since it seemed his presence would serve more as a distraction than motivation. Hmm… I haven’t properly rewarded Hachiouji for winning our contest. While I endured my punishment, it stands that the winner should also be given a prize, right? Picking up one of her breasts with both hands, she smirked as she hovered her mammary over the shrunken girl. “Well then, your first challenge is to crawl out from under my chest. You have five minutes.” Maybe I should get him a pet ‘cat’. She thought as she dropped most of her breast and caught the dark-haired girl under it.

*****

However, the overwhelming weight of the singular breast was far weightier to the tiny girl than the art club president believed. Pinned to the table under it with her arms at awkward angles, Nagatoro could barely move her fingers as she was smothered. The soft, marshmallow flesh spread out around and conformed to her body, giving her no leverage to draw any strength and the sweat that had built up under the thick towel acted as an adhesive that further complicated any attempt to move.

Using her breasts like this… that damn Usagi. I can’t move a bit! Frustrated and humiliated, the tanned girl struggled in vain.

*****

“Hmm? What’s wrong, Nekomimi? Don’t tell me you’ve given up already.” Not feeling any of the efforts the shrunken girl made to free herself, Sunomiya closed her eyes and sighed in disappointment. Her hands were still holding some of the weight off of the tiny sadist too. “And here I was going to try to make things a bit easier for you to make up for my mistake.” Her disappointment in the lack of effort grew as she waited until finally, the purple-haired girl let the rest of her breast settle on the trapped girl. Sighing, she pulled her shrunken kouhai out of her cleavage to occupy herself for the remaining time. “Seems like neither of you could resist the allure of my chest.”

“Bu-Buchou! Please, st-stop this.” Too exhausted to attempt to escape, Hachiouji tried to reason with her instead while trying to cover himself. “You don’t need to do this.”

“Oh, are you unhappy in some way, Hachiouji?” She asked. “Do you find my body unpleasant?”

“Huh? N-No, no, not at all.” Blushing even more than he already was, the meek young man looked away from her neutral-looking expression. Even if her emotions didn’t show through all the time, he had known her long enough to tell she was concerned for him. “Y-You’re very beautiful. B-But this is-whoa!” Trying to explain himself, the brown-haired boy stuttered over his words and fell over as she moved her hand and her cheeks bloomed into a bright shade of red.

“G-Good. Well, it’ll take some time for you to adjust but don’t worry, I’ll protect and take care of you.” She said, her gaze, unlike his, remaining unbroken. “And of course, I’ll be sure to cultivate your… hmm? What are you…? Ah, it seems I need to relieve you again.” Noticing his conspicuous behavior and how he was holding his groin, Sunomiya pulled his arm behind his back to reveal his stiffened member and smiled playfully.

“Bu-Buchou!?”

“I told you, there’s no need to be embarrassed. I can take care of such needs as well.” Wetting her lips, she pressed his body against them, letting his manhood slip into the tight opening. Being full of energy is good, but I’ve read it’s important to not let it build up too much. Still, how many times have I had to relieve him today? Seven? Eight? You can be such a handful at times, or rather mouthful I suppose in this case. Though, I did have you drink my milk as well, didn’t I? Smiling as his weak protests turned to cute little moans, she all but forgot about the girl under her breast. Carefully, she pushed the tip of her tongue into the crevice between her lips to stroke his erection. I made him so small, I could very well swallow him by accident. Last night he was so afraid of my lips, but now listen to him. He’s more receptive to being forced to do the things he tends to hold himself back from and teasing insults, but I can’t let myself get carried away. Even if I do so with ‘love’, it’s no excuse if I end up hurting him. Assaulting her kouhai with her soft lips and slimy tongue, as she felt him begin to tense up, Sunomiya pulled him away and let him collapse in her palm.

Panting from the sexual pleasure forced on him, and left in need of relief, Hachiouji looked up to her neutral, stern gaze. “P-Please, Bu-”

“Silence, my… um… pathetic kouhai.” She said loudly, though without the usual total confidence she had in her voice as she had to think about her word choices. “Did you feel good… rubbing against a girl’s lips? H-How pathetic. Y-Yes, pathetic is the perfect word for you.”

More confused than insulted, it was so out of character for her to try to put him down purposely that Hachiouji didn’t know how to react. “Buchou? What’s gotten into you?”

“Hmm? ‘Into me’, eh? Yes. That is a good question. What could I put ‘into me’, I wonder?” Licking her lips, she brought her hand up to her mouth and opened it to him. “Or better yet, you climb in yourself, my pathetic kouhai. With you being so pathetic, maybe I’ll swallow you like you’ve been hoping. Go on. Climb into my mouth, you… uh, pathetic bug.”

I-Is she trying to tease me like Nagatoro-san? She definitely needs to work on her vocabulary. It was almost endearing to see his capable president trying to hard, but there was still the fact that she was telling him to climb into her mouth and possibly be swallowed that was worrying. “Buchou, I don’t think-!?”

However, she replied by tipping her hand and causing him to tumble down to her lips. “I told you to climb in, kouhai. If you’re not going to listen…” Slipping her tongue under the shrunken boy, Sunomiya lifted him from her hand and slowly pulled him into her mouth.

Quickly turning around, Hachiouji watched as the light began to fade and her lips closed. “Bu-Buchou!?”

Cutting him off, the purple-haired girl let him crawl around her oral cavity a bit and try to pull her lips apart before she began to tease him with her tongue. Making multiple passes over his body, she could always tell when she brushed against his member by how it poked into her. Despite his protests, he really did seem to be enjoying it.

And I’ll be sure to satisfy you fully, Hachiouji. If Nekomimi does as poorly on the next two challenges… So far, she was winning without any effort. And if this was the best the tanned girl could offer, there was no reason to stop reconditioning the scruffy-haired boy.