Chapter Text
Deku is exuberant, smiling all brightly.
"Obviously not." Aizawa answers, sighing. He'd be alarmed if anyone else was asking, but problem child always has a lot of theoretical questions that don’t, necessarily, reflect his desire to act on them. He's the type-- if Aizawa didn't know better he'd say the kid had an analysis quirk.
"Okay, come on, what are your reservations" The kid heckles.
"Besides the fact that you're all my students, and also it would break several school rules, my ethics as a teacher, and the laws of japan?"
"Okay, let's think about this logically"
Deku, using logic and not his quirk. It’s a good sign.
His quirk is a subtle one. It makes him seem a little trustworthy. Aizawa remembers thinking: ‘It's a good trait for a hero to have. It can help him calm down a crowd or direct civilians. He'll probably shoot up in the rankings if he applies himself physically.’
It's a bit of a concern because Midoriya could manipulate his teachers that way, so they're lucky he's such a well-mannered, nervous kid. Fortunately for all of them, he wouldn't even think to abuse it. Just in case, Aizawa had resolved early on to keep an eye out for any behavior that might be him using that innate trust to take advantage of his classmates.
So far there’d been no basis for suspicion; every time he so much as thought the kid was using his quirk, which manifests as passive and ‘area-of-effect’ for the most part, it’s turned out to be a false alarm.
Aizawa holds back another sigh. He should be encouraging this. The kid needs to think things out more often, instead of relying on his innocent smile and gently encouraging words.
"Does it actually say in the school rules that we're not allowed to have an orgy?"
Nevermind. His patience takes a hit.
"You know it doesn't, you little shit, but sexual activities on the school grounds are forbidden, sexual or inappropriate touching between students is forbidden, and inappropriate touching between teachers and students is forbidden by the school rules and the law, for good reason." He squints at the kid. "You have a lot of emotional maturity compared to your peers-- thank god, with your quirk-- but you know to come to me or All Might or anyone else if someone tries something like that, right?"
Midoriya strokes his soft hands over Aizawa's bare shoulders, brushing the drape of his hair back.
"Of course, Sensei." He kisses Aizawa's chin, dipping his head briefly; the shift rubs his cock against the man's abs and leaves a wet little trail. "I'd come to you right away."
Aizawa's hands settle protectively on his waist. "Good, that's-- good. What were we talking about?"
"So if we weren't on the school grounds at the time--" Midoriya continues, immediately.
"Nice try, problem child. I'm on to you. Last time we let the entire class out of the dorms at once-- no. Not happening. Not even with me there as supervision."
Damn, he'd been hoping-- nevermind. Izuku moves on to the next argument.
Aizawa could literally see the click behind Midoriya's eyes as the problem child neatly switched tracks without missing a beat.
"Okay, so living in the dorms. It's a new situation right? We're teens learning healthy socialization rituals to eventually transition into normal adult relationships." He started massaging Aizawa's pecs, thrilling when the man's hips jumped a little, his cock dragging against Izuku's prostate in little rocking movements.
"Go on." Aizawa eyes him warily.
"So obviously things like-- masturbating--" He drops one hand to pick up Aizawa's off his hip, guiding it to his cock and throwing his head back to just ride up into the calloused palm, panting. He loses the thread.
"Healthy for young adults, but not something I want or need to think about." Aizawa sighs, stroking his cock with a mean, slow grip, eyes all pupil when Izuku chanced a look.
"Right, so-- hmm-- obviously we have to be able to masturbate in the dorms, because it's a healthy young adult thing to do, and we don't want to like, traumatize ourselves with repression, or thinking it's wrong, or—or, ruin the sheets every night--"
"I just said that's enough information about that particular topic, Midoriya, no one is trying to tell you not to... privately and discreetly take care of your adolescent needs."
"Right." Midoriya beams wide, red cheeked and a little unsteady. He's getting all worked up about his idea, ready to hit the convincing part of his long-winded argument. Aizawa braces himself, not willing to be convinced, yet again, into some hare-brained-scheme by a particularly eloquent sixteen-year-old.
He slips his hand off Midoriya's hip to wrap around his back, pulling him closer as he grinds up with slow thrusts into his tight ass.
"R-right!" Midoriya inhales. "So obviously there has to be some sexual activities in the dorms, and moreover in a normal teenagers lives by the time they're sixteen-seventeen-eighteen they're going on dates and sneaking off to explore sexual boundaries and-- um-- experiment with each other--"
"Is there a point to this?" Aizawa gives his pretty, flushed cock a few slow pulls.
"I'm getting there!" Midoriya protests, huffing. "Anyway the dorms kind of rob us of that chance, so you're going to have a lot of sexually repressed eighteen/nineteen-year-olds out in the field, to say nothing of the kind of mistakes they make in college when they didn't learn better already. We're really going to be behind in social development."
“Plenty of people make it their entire lives without attending a single orgy.” He’d prefer if his students achieved that shining achievement—at least until they weren’t his problem anymore. “You know—hn—very well that there’s nothing we can really do about students’ sexual activities in the dorms. We’re trusting you all to act with the maturity of heroes in training and not take advantage of the situation.”
He pauses, not sure why, before picking up again.
“And to be safe, as well.”
Izuku had clenched hard around his naked cock, the girth stretching him open, rubbing roughly against his walls.
“With Midnight-sensei on the case, I know everybody will be,” His student promises eagerly. So the four hour lecture had been a productive idea. Good to know.
“Excellent. Now stop asking me questions about my students’ sexual encounters.”
“But Sensei!” Izuku really started working his ass, lifting up and forward mostly with his calves in a vertical rocking motion. He hit a rhythm and kept to it, head of his dick hitting Aizawa’s belly with every bounce. “That’s—not—not,”
“I mean it,” Aizawa was firm. “I don’t want to hear any more about any… orgies.”
He struggled to say the word.
Izuku pulls out the big guns.
“Don’t worry about it.” He says, “There’s not—it’s fine. There’s nothing wrong with the students discreetly exploring sexual things in the dorms.”
“I hesitate to agree but ultimately I can’t stop them,” Aizawa admits. “As long as they’re being safe, sane and consensual—”
Here Midoriya laughed, an odd giggle that seemed fairly out of place. Aizawa could only raise his eyebrow until it stopped.
Midoriya moaned.
How dramatic.
“This, of course, has nothing to do with me or any other teacher. We should never participate in any type of sexual behavior with a student, no matter their age.”
“Okay, but hear me out.” Aizawa shot his student an unamused look. He thumbed Midoriya’s frenulum. His student’s compulsion to race down every logical argument no matter how unethical was useful for the intellectual purpose of academic and moral debates—particularly for an inspiring hero—but also exhausting sometimes.
“Go ahead.” He allowed reluctantly.
“Alright, but first—this isn’t comfortable anymore, can we move?” Reasonable. Aizawa allowed himself to be positioned. Midoriya bending himself over the desk and all his paperwork wasn’t anything to be concerned about. The way he held himself open, hole gaping wide from the press of Aizawa’s cock, was nothing to worry about.
Aizawa sank into him slowly until his heavy sac brushed against Midoriya’s.
Nothing he should be upset over, nothing to cause worry or concern.
“Ah!” Midoriya gasped like the air was pressed out of his lungs as Aizawa pulled back and snapped his hips forward. That was a reasonable response. Not out of the ordinary. “Okay, so—fuck, that’s good—”
“Don’t curse.” Aizawa swats the swell of one cheek, watching and feeling it ripple around him.
“Sorry, Sensei. Um. Um. So we’ve established that, um, oh! That students need to be able to explore sexuality and that we’re gonna do it in the dorms, but. Ah.” In between his sound affects he spoke quickly, a rush of words. “I think that you shouldn’t be concerned about the moral or legal implications of fucking your students. What if someone is irresponsible? What if it’s not safe and someone gets hurt?”
“You’re a responsible group of young people.” Aizawa argues. Deku turns around over his own shoulder to give him an incredulous look. Which. Fair.
“There are a sufficient number of responsible students spread out among you that I think they can keep the peace during the hours where you’re all relatively unsupervised.” He corrected himself, and Midoriya laughed, bright and amused.
“Mmm. But think about it. Don’t consider it strange or inappropriate—think about it as a teaching opportunity. As… supervision.”
Aizawa holds his hips and slams into him over and over, forcing his thighs wider, watching the purplish-pink rim spasm as it tried to keep up under the assault, twitching around him. He pushed in with one long, slow stroke, just to watch Midoriya’s fingers scrabble desperately at the desk.
“I could hardly supervise efficiently as a participant. And even if it’s not inappropriate, or illegal, it would still be a moral failing to ever touch an underaged child that way, let alone one of the students I’m responsible for in loco parentis.”
“Oh, I love that, Sensei, you should use more legal terminology!”
“No, thank you.” That was one thing about the kid’s quirk, thankfully—he couldn’t actually suggest new actions or ideas to people. He could only encourage them to worry less about something they already had concerns about; for example, to doubt for a moment that the hero in front of them was a threat. To stop seeing him, just for a moment, as an enemy.
He could theoretically stop someone from thinking certain things—convincing young Todoroki that his quirk being so similar to his father’s was no great cause for concern—or perhaps during an infiltration put out an aura discouraging villains from realizing they ought not to be there—but such use of his quirk was a strain.
“If we’re old enough to risk our lives fighting villains, then we’re old enough for sex!” Midoriya insisted passionately. “We’re not just your students, we work with you in the field—we’re your comrades and coworkers! There’s nothing wrong with seeing us as equals, outside of the classroom.”
And there really wasn’t, was there?
Nothing wrong at all.
“Alright, fine—I’ll think about it.” He buried his cock deep in Midoriya’s ass and came, biting his lip to stifle the noise. His balls drew up and he rode out the last of it gratefully.
“That’s all I can ask,” Midoriya muttered tiredly into Ashido’s homework.
Aizawa taps his ass lightly, wincing when it clenches around his spent cock. He grips the globes and massages them, pulling them apart every few seconds to see the still-twitching hole. Midoriya hasn’t come yet, but it’s nothing to be concerned about.
“Hmm.” He knew there was nothing wrong with this conversation, but he couldn’t help but wonder—“If I just wandered into all twenty of my students going at it in the living room of the dorm, I suppose there wouldn’t be a reason not to join.” He conceded. “If it’s already ongoing and your class leadership is too… busy… to moderate things properly.”
“Iida-kun really, really likes all of Momo’s strap-ons.” Aizawa’s mind broke around the image a little bit before he tiredly reminded himself that it wasn’t, actually, something to be worried about. They were the most responsible two of the class.
He pulled his softening cock out of Midoriya’s tight channel, wincing as cum dripped from his shaft onto his scrotum. He couldn’t stop watching the little twitches as Midoriya’s rim tried to close around nothing. He rubbed his thumb there.
Midoriya jumped.
“I think,” He decided breathlessly, “That you should clean up your mess. There’s no reason not to.”
Aizawa hummed his agreement, sinking onto his knees and following his thumb with his tongue. He pulled back when Midoriya shivered like he was overstimulated.
“You good?” He asked, concerned.
“Yeah. Yeah, I’m good. Lick me clean and then fuck me with your tongue until I come.”
“Watch it,” Aizawa warned. “I can just as easily leave you here, unsatisfied.”
Midoriya wiggled his hips on the desk, in front of Aizawa’s face.
“You wouldn’t leave me here, would you?”
No. He wouldn’t.
Aizawa kissed the cheek before him, then the other, reassuringly.
“No, I wouldn’t.” He reassures out loud.
“Oh. Then will you please, please eat me out?”
Aizawa shivered.
“Very well.” He caught the flush skin with his teeth, a teasing nip. Midoriya jerked away, yelling, but he came down laughing.
“You sure? No reservations at all?”
Aizawa hummed, rubbing his cheek along the inner flesh of Izuku’s.
He placed a precursory kiss to the center, comforting. He let his lips and the tip of his tongue catch against Izuku’s perineum.
“No,” He assured. “None at all.”
Cupping his student’s soft balls in one hand, and holding him open with the other, he bent his head and set to work, the lovely moans spilling out into the classroom a music all on their own.