Chapter 40: Never Ask for Permission Without Saying What For! (R-18)

My friends, my dear readers, I pulled an all-nighter just to get this chapter out to you. Hope you enjoy it!

The Gamma Gym looked huge when nobody else was inside, and Izuku was confirming that as he dragged a trash bag from one end to the other, crouching down every few steps to pick up another thorn from the floor.

Ibara had left a while ago, dressed in an emergency uniform a couple of sizes too big and apologizing for everything until the doors closed behind her. Since then, the only sound in the place was Izuku straightening out the practice targets one by one.

If UA is lending me the space, the least I can do is leave it the way I found it, he thought as he tossed another thorn into the trash bag. I already have enough on my plate with Nezu keeping me on probation without them also thinking I'm a freeloader... Heh, good one, Izuku, that'll earn some extra points on your résumé.

He crouched down to pull out a thorn that had gotten stuck between two boards and dropped it into the bag. By this point, he'd collected enough to fill a flowerpot.

And to think that just a few weeks ago I was the weirdo who took notes... Now I'm the weirdo who sweeps up after getting stabbed.

"One more..." he muttered, stretching his arm under the bleachers. "Man, how many thorns can one person shed in an afternoon?"

The sound of heels made him lift his head.

"Rough day?"

Nemuri walked across the gym. She was wearing her hero costume, the white fabric hugging her figure and the whip resting against her waist. She approached at a casual pace, letting her hips sway softly with each step.

"Something like that," Izuku answered, standing up with the bag in his hand. "Though the worst part is over, or at least I hope so."

"And your student?"

"Yu's taking her to her parents' place, so Ibara went to meet her at the subway station. Hehehe, Yu is responsible when she wants to be."

Nemuri stopped in front of him and reached her fingers toward his hair to pull out a thorn that had gotten tangled in his curls.

"Oh, I don't think Ibara saw that one," Izuku said, taking it from between her fingers and putting it in the bag with the rest.

"You do know UA pays someone to clean, right?"

"I know, but if they're lending me the facilities and letting me break their targets without filling out a single form, the least I can do is not leave a mess behind."

"What a well behaved young man." Nemuri tapped his cheek with her fingernail. "And do you even know where UA's trash goes?"

"...I have no idea."

"Fufufu, I figured."

Midoriya-kun... watching you being so serious with your trash bag was too amusing for me to ruin it for you.

"So, did you have any luck?" she asked, and went to sit on the wooden bleachers running along the wall, crossing one leg over the other and leaning forward with her elbows on her knees.

"Depends on what you'd call luck." Izuku looked at the bag with resignation. "If the goal was for Ibara to restrain someone without hurting them, she did that a few times, and if the goal was for me to walk out on my own two feet, she managed that too, so..."

He walked over with the bag still in his hand and stopped in front of her.

"Oh, um... may I?"

Nemuri narrowed her eyes as she pressed her legs together a little tighter.

"Fufufufu, if you're going to ask me like that, Midoriya-kun, at least tell me what you're asking permission for."

Izuku leaned toward her, so close that the distance between them shrank to almost nothing. Nemuri was already leaning forward, so when he moved in, their faces ended up dangerously close.

Oh my... so he's finally decided to throw one of my teases back at me?

She kept her gaze fixed on him, curious to see how far this sudden boldness would go.

Who would've thought, Yu's assistant turned out to be more daring than he looks.

Izuku, for his part, swallowed hard.

I don't know if it's her Quirk or if it's just her, but being this close isn't good for my mental health. Is it even possible for a girl to smell this good?

Nemuri smiled confidently, not backing off an inch.

So you want to show me you're not shy... Go on, Izuku, let's see what you're made of.

And then he put his hands on her thighs.

Nemuri's pupils dilated at the boldness of the move, and even more when she felt him spread her legs apart slightly.

Wait a moment. Isn't he moving a little fast?

Izuku's hand slid down between her legs.

Is he really going to keep going?!

Just as she opened her mouth to ask him what the hell was going on, she watched Izuku pick up a thorn that had gotten stuck in the wood of the bleacher, right between her legs, and drop it into the trash bag.

Oh... it was that.

"Phew, I think that was the last one," Izuku announced, setting the bag down on the floor and sitting beside her. "Ibara's thorns really are hard to find, huh?"

Nemuri took a moment to answer, trying to regain her composure.

If anyone's going to be caught out by this misunderstanding, it's not going to be me.

"Hard to find, sure," she replied. "Though your peculiar search method might give a woman the wrong idea."

Izuku turned his face toward her.

"Did I give you the wrong idea?"

"Don't get cocky, Midoriya-kun. I'm just saying you could give a heads up before grabbing a future colleague like that."

"Huh? But I did ask if I could."

"Without telling me what you had in mind."

Izuku laughed, a bit embarrassed.

"Hahaha, would your answer have changed if I'd explained?"

Nemuri stayed quiet for a second, and then leaned closer to him, her confident smile fully back.

"That's something you'll have to figure out by learning to phrase better questions."

She looked away toward the training field, satisfied at having gotten the last word.

"So? How was your day?" Izuku asked, determined to change the subject. "I wanted you to come with us to training, but... bah, let's not talk about me, tell me how yours went."

Nemuri's teasing smile softened.

What a shameless way to change the subject... At least your interest in my day seems genuine.

"Hmm... where do I begin?" Nemuri brought a finger to her cheek, pretending to think it over. "Two minor incidents, no villains worth remembering and, oh, a mountain of paperwork waiting for me at the end." She let out a sigh. "Though nobody got hurt and everyone got to go home... So I guess I don't have the right to complain."

She glanced at him out of the corner of her eye.

"And yours, Mr. Trainer? Aside from hunting for thorns between my legs, was your training a success?"

"Not even close! It was a disaster. Not only did I end up covered in thorns, now I'm not even sure I'll be able to have kids anymore."

Izuku shivered a little as he remembered the exact moment Ibara landed on her knees on his crotch.

"Wait. Was that last part an exaggeration or do I need to take you to the infirmary right now?"

"Easy, easy, I'm just kidding, hehehe."

From what I looked up, the nurse in charge at UA is an old lady called Recovery Girl... and the last thing I need today is a lady who could be my grandmother examining my balls with a magnifying glass.

Nemuri watched him in silence for a second. Then she narrowed her eyes.

"Tch, next time save your family tragedies for the theater. I almost dragged you off to Recovery Girl."

"Ha, ha, ha..."

That was close. She really was going to take me to the old lady.

A bead of cold sweat rolled down his forehead.

"So tell me, does Yu know her assistant ended the day with an acupuncture treatment?"

"She had work today, but she packed some wound cream in the bento."

"How considerate." Nemuri rested her chin on one hand. "Or she knows you too well and figured something dumb was going to happen."

Izuku blinked a couple of times. Now that he thought about it, Yu hadn't looked entirely convinced when he mentioned the training.

"Uh... I'd rather think she's worried about me."

"Oh, she's worried about you, sweetheart. The funny part is she still thinks she's good at hiding it."

Izuku opened his mouth to defend his boss's dignity, but couldn't find anything to say in her favor.

Yu, why are you so hard to defend? If Nemuri knew you slept with me, you'd be sunk.

"Changing the subject, Izuku..." Nemuri looked at him more calmly. "Have you thought about what you're going to do if you don't pass Nezu's test? After all, if Ibara doesn't pass the entrance exam, it's goodbye to UA for you too."

"Oh, don't worry about that, my future's already locked in."

"Huh? What do you mean, locked in?"

Izuku raised both hands in front of him, opening and closing them while a sinister smile appeared on his face.

Anyone who saw him without knowing what he was talking about would think he was a pervert... Nemuri watched the hands without changing her expression. ...and anyone who did know wouldn't have the slightest doubt.

"If my life as a UA teacher doesn't work out, then I'll become a plastic surgeon."

"Huh? But what do you know about..."

Nemuri stopped mid sentence and looked down at her own chest.

Now that I remember... this rascal never put them back to normal.

"So that's why my back has been hurting more lately..." she muttered, and shot him a look. "Izuku, put them back to normal."

"See? That's what I'm talking about." Izuku pointed at Nemuri's chest with pride. "If I fail as a trainer, I'll become a professional breast enlarger, all for the good of girls with small busts. Flat chested girls need a hero too, Nemuri-san."

"What a noble cause. I'm sure the Safety Commission will give you a medal for that."

"I think so too, thanks for the support."

Izuku stood up and walked around the bleacher until he was behind her.

"...You ready?"

"You don't seem too upset about my slip up, Doctor Midoriya."

"Ahem, it's just that I love helping beautiful heroines."

"Beautiful heroines..." Nemuri swept her hair over one shoulder and straightened her back. "You can try earning points with me later. For now focus on reversing the effect and don't leave my breasts half done again."

*

Izuku placed his hands on her breasts over the costume and closed his eyes, trying to bring her back to normal.

Smaller. Bring them back to their original size and nothing else, don't think about anything else.

"Slower, doctor, I'm not made of clay."

The problem was that Nemuri's costume was thin, so thin that kneading her through it felt just like touching her directly, and every time he squeezed to focus, the tips of her breasts brushed against his hands until he ended up pinching them without meaning to, playing dumb about what was happening below his own waist.

Easy, this is a treatment and you're a professional...

The treatment had a side effect Izuku hadn't accounted for, and he was already pressing against Nemuri's rear with a firmness impossible to hide.

I'm being too obvious. Focus, Izuku, focus.

"Midoriya-kun..." Nemuri spoke without turning. "Is that thing I'm feeling against my back part of the treatment or is that a new instrument?"

Izuku let out a resigned breath and answered quietly.

"Occupational hazard."

Contrary to what he imagined, Nemuri didn't pull away or complain. She brought a hand behind her, over her own rear, and gripped his erection through his pants, squeezing and stroking it up and down without any hurry.

Izuku lost his concentration immediately, and his Quirk, instead of stopping, did the opposite of what he'd asked. Nemuri's breasts grew a little more under his hands, and along with the size came something he hadn't been going for, a new sensitivity that made her bite her lip.

"Fufufu... Doctor Midoriya, I think your treatment has a delicious side effect," she murmured.

"N-Nemuri-san, I need to focus in order to reverse..."

"Ah, ah, ah." She clicked her tongue without letting go. "You said it yourself, small breasts need a hero too. But the ones left in between... suffer an identity crisis."

She tightened her hand a little more around his member without stopping stroking.

I can't deny it, this feels too good. How am I supposed to focus like this?

If things have turned out this way, there's no other option. What kind of fool would run away in a moment like this?

He stopped pretending and used his nails to scratch the tips of her breasts through the costume, slow at first, gaining firmness with each pass. Nemuri responded by pressing her rear back against him, grinding on his erection at the same rhythm with which she was gripping it.

"Mmmh... Izuku, I won't deny it feels good... But that confidence of yours had better not just be for show."

Izuku's mouth went dry, but he didn't stop his hands.

This woman is on another level, this doesn't come in any manga.

He leaned over her shoulder and, after carefully biting her ear, whispered a single word.

"Itadakimasu."

Nemuri's eyes flew open when she felt Izuku's fingers tighten on the fabric right where her nipples were and pull. The costume tore in two small circles, and the tug, sharp and direct on the tips, drew from her a moan she didn't try to hold back.

"Nghhhhh!... Hah... I-Izuku! This costume is custom made..."

Hope it wasn't too expensive.

Izuku peeked over her shoulder to see what he'd done.

The torn costume revealed a circle of pink skin with a darker shade toward the center, and there, taut and stiff from the tug, her nipple throbbed, swollen from the pinch and from the cold gym air on the freshly exposed skin.

"Wow, your breasts are really pretty."

"I'll take the compliment," Nemuri replied, and brought both hands to the sides of her breasts to press them together, so that both nipples brushed against one another under Izuku's gaze.

Izuku swallowed hard again and, with one hand on her waist, turned her around on the bleacher until she was facing him. Without hesitating, he grabbed her rear with both hands and brought his lips close to hers. At the last moment he changed course and gave her a kiss on the neck, working his way down slowly while squeezing her buttocks with open hands.

Nemuri held his gaze, surprised by his sudden decisiveness, and quickly recovered her defiant smile.

"Well, Midoriya… you sure you know what you're getting into?"

Izuku kept moving down with slow kisses, from her neck to the top of her breast, and when he reached the reddened tip he paused a second to swallow hard for the third time that night and bit it, sucking it between his lips.

Nemuri moaned without restraint and tangled a hand in his hair to keep him there, while with the other she kept stroking him through his pants.

"Hahh... I've gotta admit... ngh... you were hiding that talent pretty well."

Izuku lifted his head without letting go of her rear, and she wrapped her arms around his shoulders so they were face to face in an intimate gesture.

"Huh? Am I really doing okay?"

"Hmmm?" Nemuri looked at him with a bit of doubt while stroking his cheek with her fingers, and lowered her voice. "Are you... new at this?"

What a dilemma. If I say yes, I look like a rookie, and knowing her reputation as an adult heroine, if I say no, she's gonna drain me like a raisin. What would a sex hero do in this situation? Wait, I doubt any of those heroes even exist... Damn, the only one who fits the description is literally right in front of me.

Nemuri took his silence as an answer. She stroked his chest with her hand and bit her lip while bringing her face closer to his.

"Relax. Let's just say that, in this area, my résumé is a lot less impressive than you'd think."

"W-W-What do you mean?"

Instead of answering, Nemuri took the hands Izuku had on her rear and brought them back to her breasts.

"Today's lesson, Mr. Trainer. Squeeze here... ngh... and now pull, don't be shy."

She tightened her own hands over his while moaning and, guiding him with her fingers, finished tearing what was left of the costume over her bust, until both breasts were free before Izuku in all their glory.

"You're the one who made the improvements... aren't you going to admire the results?"

Okay, some questions can be answered later.

Izuku squeezed them again with both hands, and this time there was nothing therapeutic about his movements.

"Ngh... Be rough with them... After all, you tore my work costume, Izuku. You've got nothing more to lose with me."

Nemuri smiled mischievously and brought her hand back down to his member.

"Why don't we... put them to good use?"

Izuku's eyes went wide. He knew exactly what she meant.

I-I must be dreaming!

*

Nemuri pulled his pants down and shoved him onto the bleacher with a push that left no room for argument. Seen from below, with her torn costume and the whip still hanging from her belt, she was the dominatrix from the magazine covers in the flesh, and even so her hands were much softer than Izuku had imagined.

She knelt in front of him, calmly studying his cock, and ran her nail across the tip with a light scratch that made him press his legs together.

"Look at that," she murmured. "And to think that just a few weeks ago you fell asleep on my chest like a baby."

"I-In my defense, that time was because of your Quirk..."

Izuku held back a moan by clenching his teeth.

I was just picking up thorns, how did this happen!?

Nemuri let a bit of saliva drop onto the tip and spread it with her tongue before gripping him with one hand to bring him to her mouth, going down slowly as far as she could take him.

"Nghh..."

"Comfortable up there?" she asked after pulling him out for a second.

"M-Much more than comfortable."

"Good, because I'm not doing this again in the teachers' lounge."

Her hair was in the way and Nemuri swept it aside with her hand before looking up with a flirty gaze.

"Could you hold my hair, sweetheart?"

How the hell am I supposed to say no?

Izuku took Nemuri's hair with both hands, and she went back to her work with a dedication that made him close his eyes. Without realizing it, he started guiding her, pushing her head down and pulling it up at the rhythm his body was asking for.

"I-Is it okay if I hold you this tight?"

Nemuri didn't object or take offense. On the contrary, she answered with a sound of approval without taking him out of her mouth, and it became clear to Izuku that this was exactly what she'd been after when she asked him to hold her.

"Mmmh... just like that... hahh..." she panted when she pulled him out for air. "You learn fast."

I don't wanna be the only one enjoying this... What if she gets tired and decides I'm not worth it?

In front of him, a pair of large breasts bounced every time she lowered her head, and that gave him an idea.

Without letting go of her hair with his left hand, he slid his right hand toward her bare breasts, which hung right over his lap, and started kneading them and stretching her nipples at the same rhythm she was going up and down.

Nemuri moaned with him still in her mouth. She pulled off and rested her head against his lap, her breathing ragged.

"Hahh... hahhhm... Okay, I'll admit it... you learn too fast."

Izuku didn't stop, he kept pinching her nipples, and seeing Nemuri with her face flushed and her lips glistening after sucking him off sparked an intrusive thought he'd never had before. He pushed two fingers into her mouth and she licked them without complaint, cooperating with her tongue, and when he pulled them out a string of saliva followed.

"Mmh..."

Izuku bent down to her level and slid his hand between her legs, stroking her through the costume with his wet fingers while she moaned and leaned against his shoulder.

"Ngh... w-wait..." Nemuri caught her breath. "Don't go so fast, I've still got part of the show to give you."

"There's more!?"

"With what you've left me, I've got no choice but to make use of it."

She got on her knees between his legs and, holding her breasts up with her hands as if offering them, positioned Izuku's member between them.

"Fufufu... See?"

She pinched her own nipples with her fingers and, between moans, started moving up and down, using her breasts to wrap around him and her nipples to guide the motion, squeezing him between her skin every time she came down.

"Nghgg... haghhh... hahhh... ngnnh, are you... hahh... enjoying it?" she asked without stopping. "Consider it... a... hah... evaluation of your work."

"I-It feels... Nemuri-san, I... Ngh... Nemuri!"

Izuku couldn't hold on anymore. His whole body tensed and Nemuri chose that exact moment to close her mouth over the tip, taking everything while using her tongue to clean him without wasting a drop.

She pulled back with her breathing heavy and wiped her mouth with her hand. Without looking away from him, she brought her fingers to the belt of her costume and undid it.

"Well, Master Midoriya… are you gonna sit there thinking all night, or do you want to find out what comes next?"

---

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