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Three's a Party

Summary:

“Like what you see, old man?” Sonic purrs. “I bet you do. Bernie’s taste in men is atrocious.”

Shadow swallows thickly, feeling his cock swell with heat within the confines of his genital pouch. “And if I do?”

Sonic’s lips curve into a wicked smile as he leans down until they’re nearly nose to nose, “then I suggest you stop fucking my mother before you start fucking me.”

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Shadow's got a new girlfriend. Her twin sons might be the death of him.

Notes:

This is inspired by the Shadnicky AU created by @HELLBOUND24 and @SHADDYCATZ on Twitter. Don't like don't read, comments are moderated, please mind the tags!

(See the end of the work for more notes.)

Chapter 1: Meet the Family

Chapter Text

The late afternoon sun shines warmly as it approaches the western horizon, summer quickly approaching as the lush greenery of spring matures and new relationships strengthen. The Season is coming to an end, Mobians of all shapes and sizes starting to settle into their new bonds to experience the year to come with a beau (or beaus) by their side. Rings are bought, questions will be popped, and partnerships will morph as the parties involved either become closer or drift further apart. Some will survive the Season, continuing strong until the following one; others will not, fizzling out as the Season comes to a close; and even more will end with a bang, explosively destructive as the feelings brought about by the Season are nullified by the changing winds.

Shadow the Hedgehog finds himself in, what he believes, is the first category. This Season has been far from his first–his thirty-fourth to be precise–and he thinks that this time things will be different. Anti-social by nature, Shadow struggles during the bulk of the year to make any sort of connection, but the Season is particularly bad. He’s larger than the average hedgehog for starters, with pitch black quills and angry red markings and a perpetual scowl to boot. He’s far from approachable and as such has resigned himself to a life of chronic one night stands and lonely dates with his right hand.

That was until he met her.

Bernadette.

They work together, sort of. Shadow volunteers at the hospital she works at, bringing his service dog in as a therapy animal for the pediatrics ward where she’s the charge nurse. He’s found that children don’t mind his appearance when Echo is taking up their attention with her wagging tail and excited tongue. The parents tend to be wary of him, especially as he’s aged and gained a few gray quills and fur and grizzled frown lines on his muzzle, but he’s escorted by a nurse and Echo changes their minds quickly. How bad can he be if he has a therapy dog?

Shadow’s volunteer days used to fall on the days that Bernadette didn’t work, Vanilla being the part-time charge nurse for the two days a week he came in. He had built a pretty good rapport with her, not in small part because her young daughter Cream likes him, and he had heard plenty of stories about “Bernie”, the angel who every child and parent fell in love with. He hadn’t put much thought into it until he came in at the same time he does every week and instead of Vanilla he found a brilliant blue hedgehog with a shock of blonde bangs at the nursing station.

Her expression had been severe, a stern frown of her own in place as she tapped away at the computer built into the station. She had glanced up at him with deep blue eyes and a few quills escaping the tight bundle gathered at the back of her head. Shadow’s heart had stuttered as he stumbled, clearing his throat in embarrassment. He had introduced himself and her somber face had melted away into a kind one, her eyes glittering and smile lines crinkling pleasantly. She was Bernadette, Bernie to those who knew her, and she had heard a lot about him.

Suddenly, Shadow was seeing her every week, Bernie switching with one of Vanilla’s days. Allegedly it was due to Cream’s ballet classes. He couldn’t complain as he got to know her more and, once the Season began, he asked her out. She had warned him, at some point, that she was a widow and had two children, but he didn’t care. He could deal with anything if it meant he got another moment with her.

Which leads to today.

The Season is ending in a week and tensions are running high. Mobians afraid of commitment will be searching for a way out of their relationships, those who are in for the long-haul will be meeting important relatives, and those who are too excited will be looking for ways to commit themselves to their partners for life. Thankfully, Bernie isn’t ready to be remarried just yet, but she does want Shadow to meet her sons. 

He can’t say he particularly wants to. He doesn’t mind children but he’s not a big fan of them and he doesn’t remember how old Bernie said her kids were. Assuredly not infants, she doesn’t hire a sitter when she’s at work, so maybe teenagers? And that might be worse: Shadow’s track record with teens is shoddy at best and abysmal at worst. Something about them rubs him the wrong way, and something about him irks them, the ones living in his apartment complex often “pranking” him with glitter bombs or vandalizing his door.

Bernie was insistent, though, that Shadow meet them; so, now he’s standing in the living room of the small, two-bedroom home that Bernie calls her own while she’s summoning her sons. He can hear her footsteps overhead, lightweight as she walks down a hall, and the polite knock she lays upon a door before it opens with a creak.

“Nicky, can you come downstairs?” He hears her ask. “Shadow is here and I’d like you to meet him.”

There’s a moment of silence before a soft voice replies, “do I have to?”

Ouch.

He hears Bernie sigh. “I’d like you to. For me? Please?” 

The quiet voice murmurs something too low for Shadow to hear.

“Thank you. Where’s your brother?”

“He went out with Knuckles and Amy before you got home from your date.”

There’s another bout of silence and then Bernie sighs again. “Well, I’ll let him know to come home soon. Maybe we can catch him before Shadow leaves. Come on, let’s go downstairs.”

Footsteps retrace their path back towards the stairs, a second set following Bernie’s, and the stairs groan as the hedgehogs descend. Shadow brushes invisible dirt from his shoulder, tugging at the hem of his shirt to straighten in, and puts his hands in his pockets. Bernie enters the room first, a slightly strained smile on her face as she gestures at the hedgehog who enters a few feet behind her. 

“Shadow, this is my son Nicolas. Nicky, this is Shadow, my partner.”

Nicky has his arms crossed anxiously, green eyes avoidant behind large black-framed glasses. He shares his mother’s quill-style, top quills blunted into a fringe that falls over his forehead. He’s just as blue as his mother, if a touch darker in coloration, and he wears jeans and a bright red sweater with a large ‘N’ on the front. He’s taller than his mother and, surprisingly, he might even be taller than Shadow.

“Nicolas,” Shadow greets with a nod, holding his hand out politely. “It’s a pleasure to meet you.”

Nicky looks at Shadow’s gloved hand and takes it hesitantly, his grip surprisingly firm as he meets Shadow’s eyes. “Nice to meet you, sir.” 

Shadow feels his gut twist with something dark as he gazes into gentle, emerald green eyes. He wants to squeeze Nicky’s hand until it crunches, wants to bring tears to those bright eyes and hear that soft voice crack as the boy begs for relief. 

Shadow doesn’t do any of that and tries to give Nicky a smile. He fears it was more of a grimace when Nicky glances away, pulling his hand away with a self-conscious flush in his cheeks. How far does that blush go?

Bernie is speaking again but it goes in one ear and out the other as Shadow stares at Nicolas. He’s older than a teenager, thank Gaia, maybe early twenties? Which makes sense since he suddenly remembers Bernie saying that her sons are in college and she’s “so proud of them”. 

“...don’t you think, Shadow?” 

His name snags his attention, finally peeling his eyes away from the boy who had steadily turned darker red the longer his stare lasted. “Sure, Bernie,” he smoothly replies. He has no idea what he’s agreeing to, his attention still on the young man in his peripheral vision. Nicky seems to be inching towards the doorway, anxiously glancing between the stairs and Shadow, and his phone is in hand as he types without looking at it. 

Shadow can’t read what’s being said but he can tell that the contact image at the top of the text chain is a similar shade of blue to Nicky. Maybe his brother? There are significantly more texts from Nicolas than from the correspondent.

“Great!” Bernie claps her hands together. “Nicky, can you keep Shadow company while I get dinner started? Hopefully Sonny will be home soon.”

Nicky glances down at his phone with what could only be described as desperation before he sighs and nods, “sure, Mom.” He looks over at Shadow, briefly meeting his eyes again before his gaze lands somewhere around Shadow’s left shoulder. “Do you, uh, like TV?”

Shadow shrugs, crossing his arms loosely across his broad chest. He knows it makes his shirt tighten around his biceps and Nicky’s face flushes darker again. “Not particularly.”

Nicolas types another message out on his device, the previous four still unanswered.

“Um,” he shuffles awkwardly, tucking his phone into his pocket and rubbing his arm. “Could I get you anything to drink? We’ve got, like, water, cola, beer…?”

“I’ll have a beer, thank you, Nicolas.”

Nicky nods and darts out of the room to the kitchen, leaving Shadow alone again.

It might just be the Season but Shadow wants to ruin that kid.

He would bet good money that Nicky’s never been fucked before, his virgin hole would be so tight and unyielding. He’d bet he can wrap his hands around that skinny waist until his fingers touched. He thinks he’d be able to feel his cock bulge Nicky’s stomach. He wonders what kind of cock Nicolas has. Is it pink, like his mother’s cunt? Or maybe more of a reddish color like his own dick? Is it large? Long? Curved? Maybe it’s small, and oh isn’t that a thought? Poor little Nicky with his little cock and little-er hole. 

Shadow’s pulled from his daydreaming by its subject's return, Nicky holding a cold beer in one hand and a can of pop in the other. He holds out the beer to Shadow, the cap already removed.

“We only have IPAs right now,” Nicky says somewhat apologetically, “it’s what Sonny likes to drink and Mom finished off the ales a few days ago.”

“No problem,” Shadow nods his appreciation, taking the beer and having a seat on the couch. He gestures for Nicolas to sit next to him. Nicky opts to sit in an armchair instead. “So, Nicolas, tell me about yourself.”

“Oh, um,” Nicky pulls his feet up to sit cross-legged in the chair, cradling the cola between his palms. “Well… my name is Nicolas, but you already know that part. I’m, uh, twenty-one… um… I’m a junior in university. Uh, SpagU, for English lit.”

“Literature, huh?” Shadow crosses an ankle over his knee. He couldn’t care less about this, but he should at least make an attempt for Bernie. And who knows, maybe if he can get Nicolas to like him enough, he can get into his ugly pants. “What’s your favorite piece to study?”

Nicky takes a nervous sip of his drink, eyes stuck resolutely to the floor. “I, um, find the manuscripts of Pickle to be interesting. The work he did with the Gaia Manuscripts was unparalleled. It’s a shame he passed away last year, I only had a few chances to speak with him.”

Shadow opens his mouth to ask a follow-up question when the front door flies open, nearly slamming into the wall if a quick hand didn’t grab it first. “Alright, Nicky, where’s the fire?” A loud voice announces as Shadow and Nicky’s heads both whip towards the door in surprise.

Another tall, blue hedgehog stands in the doorway. He’s dressed in a cropped black sweatshirt and loose athletic shorts, red boots rolled down to his ankles. The most striking thing about him, however, is that he looks nearly identical to Nicolas. The only difference being the bangs and glasses: this other hedgehog sports neither. A much shorter pink hedgehog peers around him and waves with a pleasant smile to Nicolas.

“Sonny? Is that you?” Bernie calls from the kitchen.

Sonny’s eyes are piercing, completely different from the softness of his brother, and hold almost a challenge as he appraises Shadow on the couch. “Yeah, Mom, it’s me and Amy,” he calls back.

“Hi, Mrs. Hedgehog,” the pink hedgehog calls out. Bernie pokes her head out of the kitchen and lights up like a Christmas tree.

“Amy! How are you, sweetheart?”

“I’m well, thank you,” Amy ducks under Sonny’s arm and he closes the door with a lot less urgency than he opened it. “Do you need any help with dinner?”

Bernie grins, “I’d love some, honey. I’m making stir fry, care to help with the vegetables?”

“Sure thing,” Amy nods. She squeezes Sonny’s arm and then trots into the kitchen.

Sonny hasn’t taken his eyes off of Shadow the entire time.

“Sonic,” Nicolas says quietly from behind Shadow. “This is Mom’s boyfriend, Shadow.”

Sonic huffs a little, placing his hands on his hips, “I figured. You’ve never been much into older men, Nick.”

Shadow glances at Nicolas to see his face flush a pretty red again and then he gets to his feet, offering his hand to Sonic in the same polite way he did to Nicolas. “Nice to meet you, Sonic.”

Sonic glances down at Shadow’s hand and, after a beat, gives his elder a cocky smirk as he slaps their hands together. “Pleasure’s all mine, Shads. Mind if I call you Shads? I’m gonna anyway but I thought it’d at least be polite to ask.” Sonic gives his hand a strong pump and then pulls away to fist bump him before Shadow has time to react appropriately. 

“This was the seven ‘S.O.S.’s you sent me?” Sonic gestures at Shadow and then glances at Shadow again, “uh, no offense, man. Just that you aren’t exactly what I’d call an emergency.”

“Mom didn’t give me any warning…” Nicky’s shoulders are pulled up to his cheeks, eyes shamefully looking towards Sonic’s knees.

Sonic rolls his eyes but walks over, perching on the arm of the chair. “If you’d’ve come out with me and Knux and Ames you wouldn’t have been home and we could have kept avoiding this. Now look, we have to meet Mom’s newest toy.”

Shadow raises his brow in skeptical surprise. A toy? That’s what they see him as? He crosses his arms with a scowl and Sonic looks him over, raising his own eyeridge in return as he pulls a foot up onto the armrest and lays his elbow on his knee.

“Can you blame us, dude?” Sonic gestures at all of Shadow. “You look like all of Bernie’s previous flings wrapped in an age-appropriate package.”

“Age appropriate?” Shadow growls. 

Nicky tugs on Sonic’s shorts, “Dude, I don’t think you should talk about Mom like that.”

“What’s she gonna do, Nix?” Sonic shrugs, “she’s yapping with Amy. And yeah, geezer, age appropriate. Normally she’s going after younger guys, it’s a nice change of pace for her to choose someone her own age for once.”

“Sonic! Be respectful!” Nicky hisses and Sonic waves him off.

Shadow narrows his eyes at Sonic, “how old are you, kid?”

“What’s it to ya?” Sonic smirks as Nicky simultaneously says, “We’re twins.”

“Twins, huh? So you must share everything?” Shadow glances towards the kitchen where he can see Amy and Bernie chopping vegetables side-by-side and laughing.

“Gross,” Sonic makes a face. “No. Besides, Nicky’s gay.”

“Not like you’re straight either,” Nicky mutters and Sonic shrugs nonchalantly.

Shadow slowly sits back down again, contemplating the twins as they sit side by side and bicker lightly. Nicky’s appeal to him is his perceived innocence, big green eyes filled with a tenderness that Shadow wants to push until it breaks. Until tears spill down his cheeks and his face is twisted with pain and pleasure and Nicky’s fingers are clawing at Shadow’s arms as he’s caged in beneath Shadow’s stronger body. 

Sonic is another beast entirely. Fiery and combative, a force to be reckoned with. Shadow feels that desire burns through him just as strongly towards the other boy, but instead of pushing him until a timidness is shattered he wants to dominate him. He just knows Sonic would fight him every step of the way, a brat through and through, just desperate to be put in his place and subdued. He’d restrain Sonic, tie him up so tightly his fingers and toes would turn blue, maybe even silence him as Shadow fucked him without abandon. He wouldn’t have to worry about breaking Sonic because the piece of work is already broken.

There’s a mild sense of guilt as he realizes that he’s thinking of his partner’s sons in such a disgusting, perverted manner. He’s thirty-one years their senior, old enough to be their father, and yet here he is lusting after them like a bitch in heat. His eyes trace Sonic’s exposed legs, wondering what he might find under the thin blue fur if he were to run his hands up the long limbs. Would he find any scars? Moles? Maybe freckles? Sonic looks like a runner, with strong calves and thighs exposed by his short shorts. Shadow’s surprised he can’t see the hem of a pair of boxers, but maybe Sonic is a briefs man?

“Hey, weirdo, eyes up here,” Sonic snaps and Shadow’s eyes flick up to the boy’s annoyed face. “Gaia, where does Mom keep finding these guys?”

“Sonny,” Nicky groans. “I give up, I’m going upstairs. You keep him entertained until dinner’s ready.” Nicolas gets to his feet and beelines out of the room, quickly taking the stairs and a door shuts above. The living room is silent as Sonic looks in the direction Nicky left, the noise of the girls in the kitchen and the ticking of the clock on the mantle being the only sources of sound. 

Sonic slowly looks back over at Shadow, expression thoughtful. Shadow meets his gaze easily and takes a sip of his beer. It’s not a great IPA, probably whatever was cheapest.

After a few silent minutes Sonic gets to his feet and saunters to the couch, standing before Shadow with a hand on his cocked hip. Up close like this, Shadow can see the hints of muscle beneath peach fur on Sonic’s exposed midriff, and he can see the way Sonic’s chest fills out his sweatshirt. 

A hand suddenly seizes his quills, forcing his head upwards to look Sonic in the eyes. However, instead of another irritated look, Sonic is giving him a heated one, his eyes hooded and pupils dilated.

“Like what you see, old man?” Sonic purrs. “I bet you do. Bernie’s taste in men is atrocious.”

Shadow swallows thickly, feeling his cock swell with heat within the confines of his genital pouch. “And if I do?”

Sonic’s lips curve into a wicked smile as he leans down until they’re nearly nose to nose, “then I suggest you stop fucking my mother before you start fucking me.”

Shadow’s eyes widen as his heart thumps painfully against his ribcage. He’s toeing a dangerous line and yet he wants to push it further. This could ruin him if he miscalculates.

“And if I like your brother, too?”

Sonic’s gaze sharpens and his grip on Shadow’s quills tightens for a moment before he releases the elder hedgehog, straightening back up again. “That’s too bad, because I don’t share. Good luck convincing Nicky to sleep with you, he’s terrified of men.” 

And before Shadow can even recover from the whiplash of the past two minutes Sonic is walking out of the room towards the front door. “Hey, Ames, I’m gonna wait outside. Knux and Tails are still waiting for us at the bar, remember?”

“Be right there, Sonic!” Amy calls back. Shadow blinks and then chugs the rest of his beer as the front door slams behind him.

He’s pretty sure he’s fucked.

Chapter 2: Peek-A-Boo, I See You

Summary:

Shadow comes home early from work one day and finds something he shouldn't.

He really shouldn't stick around to watch either.

Notes:

CW: Non-consensual voyeurism (Shadow watches Sonamy have sex), dubcon (Amy doesn't stop when Sonic tells her he can't take anymore. It is consensual but this was not discussed on screen so it's considered dubcon), breeding kink (Sonic gets off to Amy telling him she'll breed him)

Chapter Text

No one was supposed to be home.

That’s the first thing Shadow thinks when he sticks his key in the door and finds it unlocked. 

There’s no car in the driveway, so no Bernie; no bicycle on the side of the house, so no Nicky; and no skateboard on the lawn, so no Sonic. And yet, the front door is unlocked. He looks to Echo, his retired police canine, and she just returns his gaze with tired brown eyes. She’s getting old, entering her twilight years, with more gray than black on her muzzle these days. If she’s not alarmed by anything then the front door must have just been left unlocked. Unusual, but not unheard of, especially if Sonic was the last to leave.

That boy, Shadow huffs and shakes his head. When Shadow didn’t stop seeing Bernie, Sonic’s proposition turned stale and his attention was as fleeting as a hummingbird. He’s rarely home to begin with and when he is he’s holed up in the attic, which he refuses to allow anyone to enter except for Nicky and a few of Sonic’s friends. If boxes need to be put up or taken down Bernie just leaves a note for Sonic on the fridge and at some point within the next twenty-four hours the boxes in question disappear or appear. 

Shadow went up there, once, when Bernie had mentioned that she left a box of spring decorations to be put up before she left for work and Sonic had already left for the day. Nicky had peeked at him from his bedroom doorway as Shadow pulled on the cord to lower the attic stairs.

“You shouldn’t go up there,” he meekly advised.

Shadow paused, casting a sideways glance. He had barely seen Nicolas in the months since their first meeting. “Why not.” 

“Sonic doesn’t like it when people go up there.”

Shadow snorted, “what’s he going to do? It’s not like I’m going to touch any of his things.”

Nicky clenched his jaw and glanced away, nervously fiddling with his glasses. “I would just leave the box in the hallway. He’ll put it up when he gets home.”

Shadow leveled Nicolas with a stern look and Nicky shied away, closing the bedroom door. With a sigh, Shadow climbed the steps into the attic, flicking on the light as he stepped onto the landing. 

None too soon, too. There were cables and wires everywhere. Workbenches lined up to create a U-shape, machines on top of each bench. Some were plugged in while others sat quiet and still. There was a rumbling generator from which several extension cords were attached tucked between two of the benches and an exercise bike attached to the generator. Scattered around the attic outside of the U of benches were random pieces of furniture as well as some instruments, an arcade machine, some road signs (obviously stolen), and a massive amalgamation of fairy lights. 

Behind the attic steps are the boxes, stacked into a solid tower, each labeled clearly by Bernie’s careful hand. That must be where Sonic stored the things that his mother asked him to bring up here. Shadow carefully stepped over the cables and around the clutter, placing the box on top of one labeled ‘Christmas Lights! (Sonic)’. He then left the attic. Nicky watched him descend, the bedroom door cracked just enough for an eye to peer through at him. Shadow pretended like he didn’t see Nicolas as he walked by and he felt that burning gaze follow him until he was out of sight.

Bernie had sat Shadow down the very next day and reminded him that Sonic politely requests that no one go into the attic. Shadow felt like Sonic very un-politely requested that when he found bright green hair dye mixed into all of his quill products that morning. 

Regardless, he hasn’t returned to the attic, nor has he asked about its contents. The power bill must not be particularly high with the generator in the attic and Shadow didn’t smell gasoline so whatever is powering the setup is probably safe and not costing Bernie a dime. Besides, it’s not like Shadow lives here. 

Sure, he spends most days here, and Echo has a bed and food and toys here, and part of Bernie’s closet is dedicated to his clothing, and he has toiletries and belongings here, and he sleeps here frequently and has a spare key as well, but he hasn’t officially moved in. He still pays for his shitty, vandalized apartment in Central City. He and Bernie have only been dating for eight months! 

But Shadow got off of work early and he didn’t want to deal with the crappy teenagers in his apartment complex so he drove out to Spagonia and into Green Hills with Echo to wait at Bernie’s house for her to get home. She usually gets home before the boys, Nicky riding his bike to and from SpagU and Sonic bumming rides from his friends. 

Shadow closes the front door behind him and flicks the lock shut, unclipping Echo’s leash and then stretching his arms above his head with a soft groan as his spine pops. Echo plods into the kitchen to begin noisily lapping at the water in her bowl and Shadow shuffles after her, grabbing a beer from the fridge and popping it open on the counter. As he passes the stairs towards the sitting room he hears a faint noise from upstairs. His ears flick and he pauses, brow furrowing.

A moment later he hears it again. A choked off sound, truncated before it could really start, and there’s a rhythmic thumping from above. Shadow frowns and starts to ascend the stairs.

No one was supposed to be home.

As he gets closer to the top of the stairs the noises become clearer, still muffled by walls but louder. Soft grunts and a keening punched out whine. The slapping of damp fur on damp fur. Garbled swears and strangled pleas.

Shadow should go back downstairs.

He carefully steps down the hallway, ensuring that his footfalls won’t cause the floorboards to creak. The door to Sonic and Nicolas’s room is ajar at the end of the hall. The master bedroom, Bernie told him, since both of them have to share it so she took the smaller room for herself. 

Fuck– Ames… s-slow down…” A breathless moan floats from behind the door. Shadow swallows thickly and presses himself to the wall beside the door, pushing lightly (so so lightly) on the door to make it swing open just the slightest bit more. 

There, on Sonic’s bed, lies the hedgehog in question. His legs are spread obscenely, one wrapped around pistoning pink hips and the other hooked over a pink shoulder. His face is flushed, sweat dampening his muzzle, and hooded green eyes are blown so wide they’re nearly black. Sonic’s mouth hangs open as he gazes up at the female hedgehog above him, his hands gripping her forearms.

His little girlfriend, Amy, has her back to the door. Her feet are planted on the floor and her hands on either side of Sonic’s head as she thrusts into him, hard. Each slap of their hips is accompanied by a faint “ah” from Sonic as he tries to pull her closer, his heel digging into her rear. There are leather straps wrapped around her legs and hips and Shadow desperately wishes he could see what might be attached to the other side.

“Slow down?” Amy gasps, leaning down to capture Sonic’s mouth in a sloppy kiss, “Y-you’ve never wanted anything sl- ah!- slow in your life. Don’t tell me you’re starting n-now?”

Is it hot in here? Shadow feels unbearably warm. He should look away. He should walk away before he’s noticed lurking in the doorway. Who knows when someone else might get home? Or if the hedgehogs caught in the throes of passion will spot him? Or if he’ll ever be able to get this sight out of his mind?

His cock aches something terrible in his pouch.

Full and throbbing, the tip stings as it rubs against the fabric of his underwear. Shadow presses a hand to his bulge and palms it, willing it to stop swelling even as he can’t tear his eyes away from the sight in front of him.

What would Bernie think? It’s one thing for him to have wet dreams and private perversions about her sons, it’s another thing entirely to watch one of them have sex.

“Ames–Ames–Amy, I’m close,” Sonic gasps, his head thrown back. Amy growls, as possessive as any male, and descends upon Sonic’s exposed neck, biting and licking with intent. She slides her hands under Sonic’s knees and wrenches his legs from around her, pinning them up by his head, folding him in half. Sonic nearly wails.

“Are you going to cum, Sonic?” Amy snarls, her tail wagging as she fucks him even faster. “Going to fall apart on my cock? Don’t think I’ll stop just because you came, I’m gonna fuck you until you’re fucking bred. Do you understand me?”

“Fuck! Yes!” Sonic sobs, his arms wrapped tightly around Amy’s neck. “Please, please, please!”

“Please, what?”

“Breed me! Please, Amy, please, please!”

She snakes a hand between them and Shadow can only imagine what she’s doing when Sonic’s voice jumps an octave and a few dozen decibels.

“Gaia–guh– ah! Fuck, shi– Amy! Ah, Amy! Amy- ah-ah-ah!”

“That’s it, good boy,” Amy croons breathlessly, “fucking cum for me. No one else, just me.”

Sonic slumps into the bed and Amy pulls out, climbing onto the bed as she rearranges him onto his stomach with his hips in the air. Shadow notices that there’s a distinct lack of a cock between Sonic’s legs and his own pulses harder at that. The equipment that Amy is wearing is thick and stocky, the same shade of pink as her fur, and she slips the dildo back into Sonic as she plasters herself to his back.

He weakly whines and turns his head towards the door, teary eyes opening to search for Amy.

Instead they meet heated crimson.

Shadow freezes, his eyes widening as he holds Sonic’s bleary gaze. Sonic doesn’t show any sign of recognizing his presence, his eyes squeezing shut again as Amy starts to thrust once more. Sonic’s fingers flex as he stretches his bare hands out in front of him, his claws extending dangerously and he groans.

“Ames…” he moans, “t-too much.”

Amy hooks her chin on his shoulder, blocking most of his face from Shadow. “But I haven’t finished yet, Sonny. You’ll help me, won’t you? Can you be a good boy for me?”

Sonic gasps as he grips the sheets tight enough to tear thin lines through them. Shadow wishes he could see what Amy just did. 

“I–” Sonic grunts, “y-yeah, yes–yeah I can… I can do that for you.”

Shadow hears more than sees the kiss Amy and Sonic share as her hand reaches for the bedside table, grabbing her cell phone and unlocking it. They part long enough for her to look at the screen, squinting at it slightly to read it, and a moment later both hedgehogs cry out in tandem as a buzzing sound fills the air.

“A-Amy! Fuck! It fucking vibrates?!”

“It’s great, r-right?” She laughs breathlessly, her hips still as her phone slips out of her hand. 

Sonic sounds like his teeth are grit, “Shit, how much did this thing fucking c-cost?”

“Don’t– gah! –worry about it, Sonny. It was on suh- sale.”

He can’t take it anymore. Damn it all to hell. Shadow sets the fucking beer he’s still holding onto the floor and unzips his jeans, swiftly pulling his heavy cock out and spitting into his hand to give it a few punishing strokes. He turns his head to look back into the room as he holds the base of his cock, silently willing Amy to start moving again so he can stroke in time with her. Then he can pretend that he’s the one fucking Sonic like the pervert he is.

Bright green eyes are watching him over the top of Amy’s head, significantly more aware than before. Shadow locks up again, waiting for Sonic to make a move, call him out, do something to end this now that he’s been caught.

But Sonic does nothing. He says nothing. Only holds Shadow’s gaze as Amy begins to grind her hips against Sonic’s. He doesn’t look away, doesn’t even blink, as he moans. Amy sits up, deciding to chase her orgasm, and grabs Sonic’s hips as she begins to thrust in earnest again. Shadow waits a moment but he’s a fool, a disgusting perverted fool, and starts tugging on his dick.

Sonic drools into the sheets, his open mouth panting as his eyes threaten to roll with the vibrating cock pistoning in and out of his cunt. There are less words exchanged this time, both Sonic and Amy too absorbed by the vibrations to think properly. Shadow’s close already, barely a minute in, ready to burst like he’s never fucked before. But he’s never been so turned on as he refuses to look away. Sonic breaks first, eyes rolling back and sliding shut as he cries out hoarsely, his voice breaking with an overstimulated sob. 

It’s that broken cry that pushes Shadow over the edge and he bites his lip hard enough to taste blood as stars burst behind his eyelids. He barely has the wherewithal to cup his hand around his tip, collecting the cum instead of letting it hit the floor. He barely hears Amy cry out with her own ecstasy over the roaring of his blood in his ears. 

He needs to move.

He needs to go.

He can’t be caught here.

Shadow glances into the room one more time.

Sonic watches him slink away.

Notes:

Steal some candy from a baby, maybe some small businesses too while you're at it; the more sin points you get the sooner I'll be able to upload the next chapter.