3,500+ Words
Well, I'm rarely this on board with a situation, Izuku thought as he watched Midnight push her chest out as if she were inviting his hands forward.
"Come on, don't be shy, Izuku-kun. Are you really gonna make a girl wait when she's willing to let you touch her breasts?" Nemuri asked with a smile, leaning forward and pressing both arms against the sides of her bust, making it stand out even more from the combined pressure of her arms and the corset of her costume.
I swear her nipples are kinda showing through the suit, Izuku thought as he made out two small bumps at the tip of each cup.
Izuku slowly extended his hands while his mouth started watering.
This is for the future of all humanity... and also because they're perfect, though that part's completely secondary.
He placed them on Nemuri's breasts gently. The material of her hero costume gave slightly under his palms, and the firmness behind that softness was exactly what he expected.
Ohhhh.... What a nice pair of...
[QUIRK ANALYSIS INITIATED]
[NAME: SOMNAMBULIST]
[USER: NEMURI KAYAMA]
[RELATED PHYSIOLOGY:] The user's Quirk originates from specialized exocrine glands distributed across her entire epidermis. These glands synthesize and secrete a volatile pheromonal compound capable of interacting directly with the human nervous system. In its base state, the compound binds to GABA receptors in the brain, suppressing neuronal activity and inducing rapid, deep unconsciousness in anyone who inhales a sufficient concentration. Effectiveness increases directly with the surface area of exposed skin, since dermal exposure maximizes the evaporation rate and dispersion radius of the compound. The user's body maintains complete natural immunity to her own secretions. Conscious control over secretion intensity is well developed; directional control once released remains limited.
[CURRENT LIMITATIONS:]
Single Effect: The pheromone currently functions exclusively as a soporific agent. The user has not developed conscious control over its molecular composition to produce alternative neurological effects.
Dermal Dependency: Any garment that covers her skin acts as a physical absorption barrier, drastically reducing dispersion effectiveness. Her hero costume was specifically designed to minimize this limitation through maximum skin exposure, generating tactical and professional vulnerabilities.
Short Range Exposure Window: Against opponents capable of holding their breath, using filtration equipment, or resisting initial exposure through Quirk enhanced physiology, effectiveness drops drastically if unconsciousness isn't achieved within the first few seconds of contact.
Psychological Stagnation: The user's self image as a hero is disproportionately tied to her physical appearance and to the provocative nature of her costume. This has generated a deep professional insecurity regarding her long term relevance as a combatant, creating a subtle but significant mental block that prevents her from exploring evolutionary paths that would require abandoning her current identity.
[UNTAPPED POTENTIAL:]
Neurochemical Versatility (Emotional Spectrum Control): The pheromonal compound is not a fixed formula. The user's glands function as a biochemical synthesis laboratory capable of much greater complexity. With training, she could learn to consciously alter the molecular structure of her secretions to act on different neurological systems and produce a range of non lethal psychoactive effects.
Wait, what?
Izuku's eyes widened as he read the next section with growing attention.
SOPORIFIC (current): Binds to GABA receptors. Induces unconsciousness. Already mastered.
FEAR INDUCTION: A variant that triggers acute fear responses in target individuals without external stimulus. Effective for crowd dispersion, psychological warfare, and contactless interrogation.
RAGE INDUCTION: A variant that induces uncontrollable aggression. Targets become unpredictable and attack indiscriminately, creating chaos within enemy formations.
LUST INDUCTION: A variant that produces intense feelings of desire and lowered inhibition. Applications include nonviolent de-escalation, infiltration, and distraction in high risk situations.
AMNESIC MIST: Those who consume it retain full motor function, but lose the contextual memory of the preceding minutes.
Holy crap, Izuku thought with genuine alarm. This is... this is absolutely terrifying in the wrong hands. Midnight could literally make someone fall in love with her, make them forget about it, or turn an entire crowd into a mob of horny lunatics attacking each other. And she has no idea she can do this?
He kept reading, unable to look away.
Density and Form Control (Tactical Mode): Currently, the pheromone exists only in gas form. Through specific secretion training, the user could learn to produce increasingly dense variants. A gel or oil version, applied through direct contact, would leave contact activation residue on surfaces or opponents, completely eliminating the dependency on open air dispersion. Greater control would allow condensation into semisolid granules or scent projectiles: small crystalline capsules that break on impact and release a concentrated dose directly on the target, granting her a precise, non lethal ranged attack option.
Internal Application (Berserker Mode, HIGH RISK): The capacity to self administer a controlled stimulant variant of her own compound, suppressing pain signals, fatigue, and fear responses to enter an enhanced combat state. Adrenaline release and physical performance would notably increase. The risk of side effects from damage is significant, so this application should only be explored under controlled conditions and medical supervision.
Subatomic Dispersion (Phantom Mode): By achieving molecular level control over gas density and aerosol particle size, the compound could be refined to filter through solid matter: sealed doors, filtration masks, reinforced suits. This would render physical barriers practically irrelevant and consolidate her position as the most effective stealth neutralization asset in the professional hero sphere.
Izuku swallowed hard.
Okay, so Midnight could literally become the most dangerous person in Japan if she wanted to. The fact that she knows nothing about this is probably the only reason society's still functioning normally.
[SUGGESTED EVOLUTIONARY ROUTE:]
Neurochemical Biofeedback Training: The fundamental step. Through guided meditation and progressive awareness exercises, the user must learn to "feel" the synthesis process in her glands and start influencing the formula at will. Mastery of emotional spectrum variants should begin here, starting with the less complex ones (Fear, Rage) before moving on to more precise formulas (Lust, Amnesic Mist).
Density Control Exercises: Once formula modification stabilizes, the focus shifts to physical state. Progressive secretion concentration exercises directed at specific areas of the skin (fingertips, palms) to develop a gel consistency and facilitate contact application.
Solidification Training: High intensity condensation exercises to achieve crystalline, semisolid production. Energy expenditure will be significant at first. Successful completion unlocks the capacity for scent projectiles and eliminates the dependency on open air dispersion for ranged attacks.
Internal Regulation Protocol (supervised): Careful, medically supervised exposure to the self administered stimulant variant. The dose must be precisely calibrated. This step should not be attempted before achieving full control over composition.
Subatomic Dispersion Research: The final and most demanding phase. Progressive penetration exercises through increasingly dense barriers.
[ANALYSIS COMPLETE.]
Izuku finished reading the last line of the Manual and let go of Nemuri's breasts. She raised an eyebrow expectantly.
"Well? Did it work?"
"Yes," Izuku said. "Uh... I'm gonna need paper and a pencil."
"Huh?"
"To write down what I saw," he explained in a completely natural tone. "There's quite a bit of information and I don't trust my memory to retain all of it."
This isn't an intelligence problem, he clarified to himself. Any responsible researcher documents their findings immediately... And especially when it involves a magnificent pair of breasts. Someone here has surpassed Momo in softness... She's definitely the R-Rated Hero.
Midnight looked at him for a long second.
"All right, Izuku-kun, hold on a moment."
She went to her desk and pulled a small notebook and a pencil from the drawer. She handed them to him with an amused expression she didn't try to hide. Izuku took both and looked at them. Then he looked at Midnight and brought his gaze up to her eyes.
"Which means I'm gonna have to touch your breasts again, sensei."
"Naturally," she answered, and positioned herself in front of him again.
"Mm... well, with your permission," Izuku replied as he placed his hand back on her chest.
Izuku put his left hand on Nemuri's right breast to reactivate the Quirk and recover the Manual. With his right hand he held the notebook. The immediate problem was that... writing with one hand while keeping the other occupied was awkward, and the notebook needed a stable surface.
The solution was obvious.
He used Nemuri's left breast as a desk.
He rested the notebook flat on top of it, with the pencil ready, and began to transcribe what he saw in the Manual in a fast, neat handwriting. The pressure of the notebook against her breast and the movement of the pencil as he wrote generated a minor but constant friction in the sensitive area. Izuku didn't pay any attention to it; he was focused on copying things correctly.
But Nemuri did pay attention.
Her smile didn't change. She watched Izuku work with the concentration of a diligent student, completely unaware of the arousal he was causing her.
Professional, she thought with approval. A completely ridiculous boy with no sense of decency, and yet, professional. Principal Nezu is gonna have a field day when I tell him about this, although... we'll probably skip a few details.
She didn't say anything. She just stood still and let Izuku finish writing, while noting with a certain satisfaction that her body was responding to the movement of the pencil. When her left nipple tensed up discreetly, Nemuri decided that was information Izuku didn't need at the moment.
He kept writing.
"Name: Somnambulist," Izuku murmured under his breath as he transcribed. "User: Nemuri Kayama. Related physiology: specialized exocrine glands across the entire epidermis..."
His hand moved quickly across the page, pressing the notebook more firmly against Nemuri's breast to keep it stable. The movement of the pencil created a rhythmic vibration that transmitted directly through the fabric.
Nemuri lightly bit the inside of her cheek.
Oh, he has no idea what he's doing to me, she thought while maintaining her expression of professional interest. This boy's going to be a problem for a lot of women in the future. A charming problem.
"Current limitations," Izuku continued writing. "Single effect, dermal dependency, short range exposure window..."
He paused, looking up from the notebook to review the Manual floating in his mental vision. He frowned slightly.
"Psychological stagnation tied to the costume and her appearance...," he murmured, and his expression softened. "Hm... that's actually kinda sad."
Nemuri raised an eyebrow.
"Did you say something, Izuku-kun?"
"Nothing, sensei!" he answered quickly, returning his attention to the notebook. "Just taking notes."
He kept writing. His left hand, still resting on Nemuri's right breast, moved slightly to adjust his grip, and his fingers brushed her sensitive nipple through the costume material.
Nemuri's breath caught for a fraction of a second.
"Untapped potential," Izuku wrote as he spoke quietly. "Neurochemical versatility, emotional spectrum control..."
He stopped, eyes wide as he reread the section. Fear induction, rage induction, lust induction, amnesic mist...
"Geez," he whispered.
"Something wrong?" Nemuri asked with curiosity.
"N-no, sensei!" Izuku answered quickly. "It's just that... your Quirk has a lot of potential I wasn't expecting."
A lot of terrifying potential that could literally destroy civilization if she decided to use it for evil, he added mentally. Note to self: never, under any circumstances, get on Midnight's bad side.
He kept writing, his hand moving faster now.
"Density and form control, internal application, subatomic dispersion..."
The pencil scratched against the paper with growing urgency. Izuku pressed the notebook down harder, and the additional pressure on Nemuri's breast made the corset compress even more.
This time, Nemuri couldn't fully suppress her physical reaction. Her nipple hardened noticeably under the costume, creating a visible bulge that pressed against both the fabric and the bottom of the notebook.
Izuku, completely absorbed in his transcription, didn't notice.
"And... that's it."
He lifted the pencil from the paper and closed the notebook with a satisfied expression.
"Done," he announced.
Nemuri blinked, pulled out of her thoughts.
"Already?"
"Yes, sensei," Izuku said, withdrawing both hands from her chest and stepping back a little. He held up the notebook proudly. "I've documented everything your Quirk can potentially do. It's... honestly pretty impressive."
And absolutely terrifying, but we'll get to that part later.
He looked at the notebook, flipping through the pages to review his handwriting.
"Your breast was an excellent writing surface, by the way," he added casually. "Very stable and comfortable. Way better than trying to balance the notebook on my knee or something."
Nemuri stared at him for a long moment.
He said that completely seriously. What he just said is maybe the most absurdly perverted compliment I've ever received. And he said it as a professional opinion...
She burst out laughing. The sound came out melodic and delighted.
"I'm glad my anatomy could contribute to your research, Izuku-kun," she said with a wide smile.
Izuku nodded seriously.
"Every part of the scientific process matters, sensei. Proper documentation is just as important as the initial observation."
"Ahem... So," Nemuri said, crossing her arms under her bust and watching with interest as Izuku's eyes immediately followed the movement before returning to her face. "What did you find out? What can my Quirk do that I don't know about?"
Izuku opened the notebook again, turning to the first page.
"Well, sensei, the short version is that your Quirk is significantly more versatile than you think. The soporific effect is just one application of a much broader capacity."
He paused, choosing his words carefully.
"Basically, you can potentially modify your pheromone to produce different neurological effects. Fear, rage, lust, amnesia... a whole spectrum of emotional and mental states."
Nemuri's eyes widened.
"I can... what?"
"Control emotions through biochemistry," Izuku explained. "Your glands aren't limited to producing sleep gas. They're a synthesis laboratory. With the right training, you could learn to alter the molecular structure of your secretions to target different brain receptors and create different effects."
He turned to another page.
"You could also learn to control the density and form of your pheromone. Turn it into a gel for contact application, or condense it into solid projectiles for ranged attacks. You could even, theoretically, refine it so it passes through physical barriers like masks and sealed doors."
Nemuri stared at him, processing the information.
All this time... all these years as a professional hero... and I've been using maybe ten percent of what I'm actually capable of?
"There's also something called Berserker Mode," Izuku continued in a more serious tone. "Where you could use a stimulant variant on yourself to enhance your physical performance. Although that one carries significant risks and should only be attempted under medical supervision."
He closed the notebook and looked at her directly.
"Sensei, your Quirk isn't just powerful. It's potentially one of the most dangerous abilities I've analyzed so far. In the right hands, it could neutralize almost any threat without them even knowing you were there."
In the wrong hands, you could topple governments and reprogram entire populations, he added silently. Better not mention that part right now.
Nemuri stayed silent for several seconds, absorbing everything he'd said.
"Izuku-kun...," she said in a low voice. "I think... you've just changed my entire career."
She took a step forward and placed a hand on his shoulder.
"Thank you."
Izuku felt his face warm up slightly.
"Y-you're welcome, sensei. I'm glad I could help."
He looked at the notebook in his hands and then back at her.
"Although, uh, I should probably give you these notes so you can review them properly. There are a lot of technical details about training exercises and evolutionary routes that we should probably discuss with Principal Nezu."
"Agreed," Nemuri said. "This kind of Quirk development will require proper supervision and resources."
She took the notebook from him, brushing her fingers against his as she accepted it. Then she paused, and her smile turned mischievous again.
"Izuku-kun, before you go... I'm curious about something."
"Yes, sensei?"
"When you were using my breast as a desk," she said, watching his face carefully, "did you notice anything... unusual?"
Izuku blinked, confused.
"Unusual? Like what?"
Nemuri's smile widened.
He really has no idea.
"Never mind," she said with a light laugh. "It's not important."
She gestured toward the door.
"You should get back to the girls. I'm sure your friends are waiting for you."
"Right," Izuku said, heading toward the door. "Thanks for... uh, for being willing to help with my Quirk research, sensei. I know the activation method is a little awkward."
"A little awkward," Nemuri repeated mentally. I adore this boy.
"It's my job to support my students' growth, Izuku-kun," she said warmly. "Even when that growth requires... unconventional methods."
She opened the door for him.
"And Izuku-kun? One more thing."
"Yes, sensei?"
"If you need more tests with your Quirk," she said with a knowing smile, "or if you notice anything strange... come to me, I'll be more than happy to help."
Izuku's face lit up.
"Really? Thanks, sensei! That'd be incredibly useful for my research!"
He gave a respectful bow and hurried out of the office, already thinking about his next steps for documenting and understanding his Quirk.
Nemuri watched him go and then closed the door behind him. She walked back to her desk, sat down in her chair, and opened the notebook he'd given her. Her eyes scanned the detailed notes, taking in the technical terminology and precise observations. Then she set the notebook aside, leaned back in her chair, and let out a long sigh. She uncrossed her legs and immediately noticed the dampness in her underwear.
Several years as a professional hero, she thought with ironic amusement. Villains defeated, lives saved, more public appearances and interviews than I can remember... and a teenager with a breast touching Quirk just gave me the most intellectually stimulating and physically arousing experience I've ever had.
She looked at the notebook again.
She smiled.
Principal Nezu is gonna love this kid.
She picked up her phone and dialed.
"Principal Nezu? It's Kayama. We need to talk about Midoriya Izuku's Quirk. You were right... it's much more interesting than we thought." She paused, listening. "Yes, I'll be there in a few minutes."
She looked at her costume, the slight wrinkles where the notebook had pressed against her breast.
"Let's just say young Midoriya has a very unique approach to scientific documentation."
Outside, in the hallway, Izuku walked back to his classroom with a satisfied expression.
That went way better than expected, he thought happily. Not only did Midnight-sensei not punish me for touching Ochako's breasts in public, but she actually volunteered to help me test my Quirk further. This is the best possible outcome.
He pulled out his phone and sent a quick message to Ochako.
"The meeting with Midnight-sensei went well. She's okay with my Quirk. I'll explain when I get there, are you in the classroom?"
A moment later, his phone vibrated with her reply.
"REALLY?! That's amazing, Izuku-kun! (´∀`)♡ YES, WE'RE WAITING FOR YOU HERE!!"
He smiled and slipped his phone back into his pocket.
Things are looking up. I've got Ochako, Himiko, Momo, and now Midnight, all willing to help me develop my Quirk. My mom's getting stronger every day. I'm learning combat from Aizawa-sensei. My hero career's starting to take shape.
He turned the corner toward his classroom.
Now I just have to think of a hero name that goes well with my Quirk... Maybe Izuku the Milker... Mmmm, no, doesn't sound right. Maybe the Boob Booster? Nope, sounds awful.
The door of Class 1-A came into view.
I'll think of something. For now, it's time to see my favorite classmates.
******
Author's Note: hitting that Power Stone button is the best way to let me know you want more.
Patreon.com/itszeroo