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Mugen was having a bad day.
Being apprehended by heroes was bad enough. No one ever got out of bed hoping to end the day propped against a wall with quirk suppressant cuffs on their hands and feet while dirty alley water soaked into the seat of their pants. But it was at least a known risk. Sure, he’d thought he could get away from the crime scene without being caught — but this outcome was always a possibility.
What hadn’t seemed like a possibility — what he would never have expected in a million years — was that he’d end up propped against a wall with quirk suppressant cuffs on his hands and feet, dirty alley water soaking into the seat of his pants, watching two pro heroes aggressively making out next to a dumpster.
It wasn’t obvious whether they were ignoring him or had just forgotten he was there. Hero Dynamight, covered in soot and with his oversized gauntlets discarded on the ground, was seemingly trying to climb down Hero Deku’s throat tongue-first; while Deku, tightly sandwiched between his partner and the wall, busily attempted to fit his entire arm down the back of Dynamight’s pants. Both were panting loudly, gripping each other with an elbow hooked around the neck in something between an embrace and a headlock.
Mugen suspected that even if he yelled at the top of his lungs, they wouldn’t notice him.
“Hahhh…” Deku finally disconnected from Dynamight’s mouth with an audible smacking sound, strings of spit still tying them together. Dynamight immediately yanked Deku’s mouth guard further down his neck and started attacking his jaw. “Oh my god, you were so cool, Kacchan… you moved so fast when you cut off his escape…”
“Not bad yourself,” Dynamight rasped, in between sloppy bites down the side of Deku’s throat. Deku arched, grabbing the back of Dynamight’s head and hastily tugging off his headgear. “When you took him down with your legs, fuck…”
Deku threw his head back with a loud moan. Whatever he was reacting to — the memory of smashing Mugen to the concrete with his thighs wrapped around his head, or the rough hand Dynamight abruptly shoved between his legs — it seemed to hit him hard. Suddenly, he was extracting his arm from the back of Dynamight’s pants to work on the front, unclipping his belt and pulling the fastenings open just far enough to stick his hand right back in. Dynamight grunted, head landing heavily on Deku’s shoulder, hips grinding forwards against him while he fumbled to unzip Deku’s jumpsuit.
Shit. This was happening.
Mugen thought about saying something. He really did. But he was in a precarious situation, alone in an alleyway with two near-feral heroes, his hands cuffed and his feet shackled together. Moving slowly and quietly, he attempted to shuffle away along the wall, scooting along inch by inch on his ass. But with his arms secured behind his back, he was unsteady. Before long he had to stop, his balance threatening to give out and dump him onto his face on the ground.
Deku tipped his head back against the wall, chest heaving, the dingy light shining off his sweat-slicked skin, as Dynamight dropped heavily to his knees. Mugen didn’t have a clear line of sight, but he could see Deku’s eyes pinch shut and his mouth fall open when Dynamight grabbed his hips and leaned in; could hear low groans and wet, muffled breathing as Dynamight’s head began to bob. Leaving one hand braced on Deku’s thigh, Dynamight let the other fall in between his own legs, down to where Deku had left his pants unfastened. The back of his shoulder began moving steadily, rhythmically, in time with his head.
“Oh shit—” Deku still had his jumpsuit on, albeit unzipped all the way down the front. But he hastily tugged off his gloves, dropping one bare, heavily scarred hand to tangle into Dynamight’s hair and hold him still. “Kacchan, ah… I want you so bad…”
Dynamight was breathing hard through his nose, now allowing Deku to fuck eagerly into his mouth. His grip on Deku’s thigh was tightening, fingers digging into the muscle, dragging him in closer with every push forward. His hand was still moving fast between his legs, his shoulders and back visibly flexing with the motion. Deku moaned, his fingers gripping in Dynamight’s hair, the other hand digging harder into the wall behind him — until all of a sudden, thrashing dark tendrils sprouted from both his arms, shooting out to fill the space around both of them with a writhing mass of shadow.
Mugen couldn’t suppress a yelp, panic flaring instinctually at the sight of the things. But all they did was wrap delicately around Dynamight’s hips to tug his pants further down, one long strand sneaking up to snag the waistband of his underwear.
Suddenly, Mugen was presented with the sight of Hero Dynamight’s bare asscrack.
Dynamight pulled off from Deku’s cock with an obscene slurp, the uncanny tendrils dragging him to his feet and back into Deku’s arms — where he went willingly. One of Deku’s hands burrowed into his pants to seize his ass and squeeze, the two of them rutting together and attached at the face once more.
“Kacchan,” Deku gasped, muffled, “oh god — can I—”
“No,” said Dynamight, forcing a thigh in between Deku’s legs and grinding.
“But — hah!” The tendrils dissipated as Deku’s arms gripped tighter, hips stuttering forwards into Dynamight’s leg. “We can go slow and I’ll use lots of spit—”
“I said no,” Dynamight growled, shoving into Deku harder and making him yelp. “I still remember the last time, shithead.”
Deku whined, both hands grasping at Dynamight’s hips — before suddenly, with a flash of green lightning, flipping the pair around. Now Dynamight was flush against the wall, chest pressed into the brick, with Deku leaning hard against his back.
“Okay — okay, like this,” Deku was muttering, his hands yanking feverishly at Dynamight’s pants to pull the waistband lower. “Squeeze your legs together, Ka — ahhhh—”
Mugen winced, trying again to shift away — only to realise, with muted horror, that his balance had gone entirely. He thrashed, panicking, but his movement was completely restricted: all he could do was slide down the wall shoulder-first until he landed on the concrete. Now prone, all of his limbs still bound, there was no way for him to escape the unfolding scene.
Both of the heroes were panting rhythmically now. Deku was supporting his weight with one hand against the wall, still mostly dressed but quite obviously rutting his cock in between Dynamight’s bare thighs. Dynamight, crossed forearms leaning flat against the brick to cushion his face, was bumping his hips back to meet him with steady chants of “fuck — Deku — fuck — fuck”. Deku moaned, spat loudly into his free hand and reached around, making Dynamight’s breath catch, a groan bubbling low in his throat.
“Kacchan,” Deku gasped — licked along the back of Dynamight’s neck as he jerked his cock.
“Yeah—”
“Kacchan, you were so good—”
“Shit —” Leaving one arm braced against the wall, Dynamight reached back with the other to grip onto Deku’s clothed ass, pulling him in harder. “Yeah, more—”
“Ahh — so fast, so strong —” Deku bit into the meat of Dynamight’s shoulder, making him jolt, his hips bucking — “amazing, Kacchan, such a good hero—”
That did it. Dynamight shuddered through a yell, his hand balling into a fist against the wall as he shot cum all over the bricks. Deku gasped, arm working to stroke him through it, still humping frantically into Dynamight’s thighs and babbling unintelligible praise.
“Fuck yeah,” Dynamight slurred, rocking back against him, “c’mon, that’s it — gimme your cum, Hero Deku—”
With a desperate groan, Deku buried his face in Dynamight’s shoulder, his movements turning sloppy and sporadic. Both arms braced against the wall as he bucked and moaned, caging his partner in, his cum spattering onto the ground and soaking into the fabric of Dynamight’s pants. Eventually, Deku’s arms dropped to squeeze Dynamight around the waist, both of them slumping forward to heave for breath. Their mingled cum trickled slowly down the wall in a silent yet powerful testimony.
Mugen, prone on the ground with his arms secured awkwardly behind him and the side of his head soaking in a muddy puddle, found himself feeling relieved.
The heroes were kissing again, sweetly this time. Dynamight was craning his neck to meet Deku’s lips from over his shoulder, one arm twisted back to tangle his fingers in Deku’s sweaty hair while Deku held him tenderly around the waist. They might have been whispering to each other, but Mugen couldn’t hear them. What did register was when, drawing back from the kiss, Dynamight lazily opened his eyes — and made direct eye contact with Mugen.
“What the fuck!” Dynamight screamed, kicking Deku away and yanking up his pants, his face turning a dark, violent red. “How long has this loser been here?”
“Huh—?” Confused, Deku turned around to look — and in the process presented Mugen with an unobstructed view of his naked, cum-covered dick. Deku shrieked in surprise, both hands shooting down to preserve his modesty far too late. “Wah! K-Kacchan, I thought you called it in!”
“ME?” With his pants mostly fastened — albeit very damp and rumpled at the crotch — Dynamight rounded on Deku, grabbing each side of his open jumpsuit in a powerful fist. “You said YOU were doing it, dumbass!”
Still struggling with his zipper, Deku glared back at him. “I said I’d leave it to you!”
“You — fuckin’ — argh!” Dynamight roared in frustration, giving Deku a final vicious shake before shoving him back against the wall and stalking towards Mugen. “Hey. Villain scum.” Crouching, he fisted a hand in Mugen’s collar and dragged him upright. He looked ready to kill, cheeks going purple and a vein in his temple throbbing dangerously. “What did you see, huh?”
Mugen looked back at him for a moment. There was no good answer to that question.
Deku didn't take the silence very well. With his suit more or less zipped back up, he was twisting and untwisting his fingers, sweating buckets, his eyes wide with panic. “Oh my god. Oh god, no. You didn’t see all that, did you? No no no, how can I explain this to All Might? Or my mom? Oh god, please tell me you passed out when you hit the ground or something…”
His rambling continued, but grew steadily less and less intelligible as time went on. He seemed to be spiralling, and Mugen almost considered trying to strike a deal with them. Even if letting him go wasn’t an option, maybe reduced charges would be on the table — Deku wasn’t exactly starting from a strong negotiating position, after all.
But then his eyes slid back over to Dynamight, still with a hot fist gripping tight in his collar. He was stony-faced and unmoving, soot and dirt streaked around his eye sockets and on the bottom half of his face. His lips were still swollen pink with the tell-tale signs of sucking dick. As their gazes met, his sharp, unblinking eyes slowly, almost imperceptibly narrowed.
It wasn’t worth it.
“Nope, like he said,” Mugen replied eventually, not breaking eye contact with Dynamight. “Hit my head. Didn’t see a thing.”
“Yeah!” Deku’s eyes darted back and forth between them. “Of course you didn’t! I took you down pretty hard, after all… R-right, Kacchan?”
“Right,” Dynamight said slowly, his grip in Mugen’s collar not shifting. “Hit your head. Passed out. Didn’t see shit.”
“Don’t even know what you’re talking about,” Mugen agreed, trying to lean away but not able to move further than an inch. He could smell cum in the air. “Look, just… ugh. Fuck, just take me to jail.”
And sure enough, when they hauled him to his feet, he didn’t resist. When Deku not-so-discreetly wiped off his hand on a clean bit of brickwork, he pretended not to see. He could sense them trading glances, occasionally hissing whispered words at each other as they carted him away, but he tuned them out.
Anything — anything — for a peaceful life.