Krissy, Sandra, Kevin, and James move about the room as they put on their pajamas. They number two girls and two boys, all bunnies with fluffy white fur, and all between 11 and 12 years old.
"I'm really excited about this sleepover," Krissy says as she pulls down her pants.
"Me too," Kevin replies as he sneaks a glance as Krissy's bare butt.
"Yeah, can't believe our parents let us all stay over while your parents are out, Krissy," James says as Krissy puts on her pajama pants much to Kevin's disappointment.
"Well, I may not have told my dad we'd be here by ourselves," Kevin responds, "What about you, Sandra?"
"Sandra?" Krissy turns to look at her as she doesn't respond.
Sandra is staring at the closet door, which is just cracked open, trembling in terror. She'd just peeked inside. "M-M-Monster!" she cries with fear.
There's a brief silence in the room as all the other children stare at Sandra, who is still quaking with fear. 
The silence is broken as Kevin bursts out laughing at her, pointing and taunting her. "Really, a monster in the closet? Are you 5?"
The laughter continues at Sandra's expense, with even Krissy unable to help but crack a bit of a smile and chuckle with the boys.
"Come on, now, if you want to try to scare us, you have to do better than that," Kevin says, approaching the closet with his chest puffed out, "Everyone knows monsters aren't-"
CRREEEEAKKK
He swings the door open only to be met with the green face of a horrible creature with a wide chin and a mouth full of sharp, yellow teeth that stick up in front of its upper lip due to a heavy underbite. The creature is entirely bald but has wide horns, and it lets out a huff of an exhale that sounds not unlike a bull.
Kevin screams and tries to run, immediately tripping and falling in his haste as the troll-like creature emerges.
The beast towers over him as it lumbers out from the closet and stands to its full height, barely fitting in the room with its tremendous stature. It's truly enormous compared to the children, with a fat build and spikes running along its spine. It also possesses a tail with grey scales that run up its back.
"Wait wait wait-!" Kevin cries as it reaches for him, grumbling a monstrous, guttural noise as it does so. Between the creature's disproportionately thin green legs is a foot-long cock that's already erect in anticipation of what it will do to him.
A clawed green finger slowly pulls down the bunny boy's pajama pants, then
PLAP
Kevin yells out in terror and pain as the monster slams its cock all the way inside of him, stretching out his colon and creating a bulge the size of the boy's forearm in his abdomen.
PLAP
The boy begins to cry, his tears interrupted by shouts of pain every time the ogre-like creature rams into him. Sandra runs out of the room, wearing only her panties as she'd been in the midst of changing when she'd discovered the creature.
PLAP
Kevin wails and flails his arms uselessly in the air as the troll's hot, heavy, rancid breath sweeps over his upper back and neck in pulsing waves. Krissy dives under the bed to hide.
PLAP
James runs at the creature with a softball bat, yelling what's probably meant to be a fierce battle cry but coming from a small, fluffy child only comes across as adorable and helpless. 
Without even ceasing its rape of the little boy on its cock for a single moment, it kicks James over. He yells and doubles over on the floor in pain, only for the monster to nudge him onto his back with one foot then use it to hold him in place, putting a small fraction of its weight onto the foot it rests on his belly.
PLAP
Kevin cries out again, possibly begging for James to get up and save him, possibly begging for his friends to run, but any words are muddled under his tears and the constant shouts forced out of him by the impact of the ogre's cock.
PLAP SPLAP FAP SBLFRBLRT
The monster slams Kevin onto its cock a few more times before shoving him balls deep onto it with great force. As his body is filled up and bloated with the foul beast's seed, he can't form a single word, only letting out desperate choking noises.
The troll grunts and huffs as it empties its balls into the small boy, and at the same time a few drops of drool land on Kevin's back. His fluffy white belly expands to a great size with the cum pumped into him.
Kevin squirms feebly, hoping vainly that now that the monster has had its way with his small, frail body it'll be satisfied and let him go.
SLOSH
The creature huffs and grunts as it slowly pulls the little bunny off of its cock. A brief pang of hope strikes the young boy as his body is removed from the monstrous member. 
Kevin's relief is short-lived, however, as the monster opens its wide jaws and easily engulfs his head.
GULP
The ogre has no trouble fitting the boy down its gullet, even with his big, bloated belly. The helpless child disappears into the broad maw in an instant and slides down the monster's throat. He comes to rest deep inside of its fat gut.
GRRRRGGGLE
Still beneath the creature's foot, James begins to cry, listening to the sounds of his friend struggling in the monster's gut.
The creature lets out a grunt as it reaches down and lifts up the small boy in one hand. James squirms and squeals in its grasp, terrified of suffering the same fat as Kevin before him, but the monster does nothing to him yet.
It holds him to the side in one hand as it sits and reaches under the bed with the other. It pulls out a flailing Krissy, uses one finger to pull down her pajamas, and brings her frail, young pussy to its cock. James realizes with a revolting feeling what's happening. It wants him to watch.
PLAP PLAP PLAP
"NO NO NO! LET HER GO!" James yells as the monster begins to pound the little girl's pussy.
Poor Krissy can only scream and flail her arms as the green beast uses her like a child-sized fleshlight. Her body stretches out around the enormous shaft, and judging by the grunts and gravelly moans from the creature, the tightness only makes her feel better to rape.
PLAP PLAP PLAP
The troll continues to grunt and huff as it slams Krissy onto its cock again and again and again. James' protests turn to wordless sobbing as he slams his little fists uselessly on the monster's hand.
The inhuman grunts and huffs and groans from the creature get louder and faster as it continues to fuck the little girl harder and harder. Krissy only screams and flails. 
SPLAP PLAP FAP SBLRPRRBLRT SLOSH
The monster slams Krissy onto its cock several more times before thrusting all the way into her and filling her with its seed. Her belly bloats out just like Kevin's had before, completely full of the creature's baby batter.
HOMPH- PLAP
It happens incredibly quickly. The beast pulls Krissy off of its cock and stuffs her upper half into its maw in one swift motion. Before it's even swallowed her, it puts both hands on James and stuffs his ass onto its cock, which has already become erect again.
James tries to scream, but he can only wheeze and silently sob, out of breath and with his voice hoarse from his prior protests. The monster's cum drips from Krissy's pussy onto James' back as the creature finishes eating her, and he wretches and squirms on its cock.
GULP PLAP PLAP PLAP
James feels Krissy's body weight add to the heft of the monster's gut pressing up against his fluffy white butt. It only increases his dread as it ravages his little body, but there's nothing he can do to stop it.
PLAP PLAP PLAP PLAP PLAP
The monster's breath batters the little boy's back as it fucks him harder and faster. He desperately kicks and flails to no avail as he realizes what's soon coming, but it does him no good against the much stronger creature.
PLAP PLAP PLAP PLAP SPLRRFBLRT
Just as it had with Kevin and Krissy before him, the creature finishes violently inside of James, making him cry out a helpless, garbled noise as he's pumped full of its sperm. His gut sags beneath him and a little cum even leaks out his mouth, but the monster doesn't stop until its balls have been fully emptied into him, though it'll soon be ready for more.
The beast pulls James off of its cock, and as soon as he's able to speak again he begins to plead for his life, "No! Don't- don't eat me! I wanna live! I wanna see my mommy again!"
Heedless of his cries, the creature lifts him up over its head and opens its maw wide, a gaping abyss waiting just beneath the helpless little bunny boy.
GULP
It drops him in, and he disappears into the fat, green gut with the other children, packed inside like three basket balls in a bindle.
The monster grumbles and gets up, having enjoyed its toys-turned-meals but still craving more and knowing full well another little child is nearby.
STOMP STOMP STOMP
It's a tight squeeze for the beast as it thunders down the hallway from the bedroom to the living room. It's dark outside and terribly cold; she wouldn't try to flee outside in this weather. She must be nearby.
STOMP STOMP STOMP
Sandra cowers in the corner behind the sofa. The back of the couch is at an angle up against the wall, creating a cramped space behind it that makes the perfect hiding spot.
She covers her mouth with one hand to keep her panicked breaths and muted sobbing from drawing the creature's attention, tears streaming down her face. She can hear it stomping around nearby.
In her free hand is the family's home phone, removed from its rack and held in a white-knuckled grip. She does her best to punch in her father's number, though the keypad is small and weird and difficult for the little girl to use one handed.
She finally gets the number punched in and tries to call.
BWUUMP BWUUMP BWUUMP
It emits a low, rhythmic tone over and over and over. Loudly. Maybe it's to indicate no service, maybe it's because she'd entered the number incorrectly, maybe her father declined the unknown number's call and thought nothing of it, but no matter the mistake, the error tone rings out from behind the couch all the same. 
Her position has been compromised.
STOMP STOMP STOMP
The heavy footsteps approach the couch, and soon her cover slides away as the beast pushes the sofa effortlessly to the side.
Sandra stares with wide, tear-filled eyes up at the green beast looming over her, clutching the phone close to her bare chest like a teddy bear. This is it.
The little girl yelps as she's lifted off the ground, large hands gripping her tightly on both sides. One thumb slides its way down her belly to her waist, where it rips off her panties with ease.
SPLAP
The beast forces her onto its cock, the little girl facing up towards its mean green face.
"Omph-!" she cries out as the monster lifts her up on its shaft, pressing her up against its full, squirming belly as it begins to slide her up and down its shaft.
GRRRRRGGGGLE GRRWWWWWLLLLL PLAP PLAP PLAP
The belly of he beast gurgles as it works on its mighty meal of the three children already eaten, and Sandra can only scream and cry helplessly as she listens to the panicked, useless struggles of her friends trapped inside, still being pounded in her tight little pussy all the while.
SPLAP PLAP PLAT
The creature's drool drips down onto her head in heavy drops as it continues its vicious rape. The enormous cock doesn't just penetrate little Sandra's defenses, it shatters them, ramming her most sensitive, private part of her body with an undeniable violating force.
She can only struggle and cry as it plows her mercilessly with its enormous shaft.
PLAP PLAP PLAP
She knows it's coming. It won't be long.
PLAP PLAP PLAP
Soon it'll finish inside of her.
PLAP PLAP PLAP
And then it will devour her.
PLAP PLAP PLAP SPLBRLRLFRLPRT
Sandra lets out an anguished wail as her body fills up. The cum filling her insides pushes her away from the monster as it inflates her abdomen between them. It takes a full minute for it to finish filling her up. 
She feels herself being pulled off of the shaft as soon as it's finished cumming in her helpless little pussy, a sensation like a knife being pulled from a clean wound.
GRRRWRWWRWRLLLLL
The monster, full of her digesting friends, hungers still, and Sandra knows she's next on the menu.
HOUMPHF- GULP
Without giving her the chance to contemplate her imminent fate or to beg for her life or even to cry out, the beast devours her all at once and stuffs her down to join the others.
GRRRRGGGGLLLLLEEEEE
All four little bunny children are packed tightly in the creature's gut, round bellies full of its seed from when it'd violated each of them in turn. They struggle what little they can, making futile pleas that barely penetrate the tough stomach walls as muffled cries in the outside world.
The only thing left to do is wait and digest.
STOMP STOMP STOMP CRASH
The monster bashes through the front door out into the cold. For any of the children, it would be deadly to wander off in such weather, but the beast hardly feels winter's harsh chill. It thunders away from the now-vacant home, the lights still on, the furniture in disarray, and snow blowing into the living room.
Its stomach is full and its lust is satiated; it has what it came for.
STOMP STOMP STOMP
Hours later, in a dark structure constructed of cold stone bricks, the green behemoth lumbers through the corridors. It enters a room full of dark silhouettes, small anthropomorphic shapes colored with brown shades barely illuminated by torchlight.
The monster finds an empty space for four more trophies, and it squats down.
PFFFFRRRR FBLLLRRFFBLRT BBLRRT
The shape of a small bunny boy with a cum-bloated belly is pushed out of the monster's behind. It maintains perfectly the form of the innocent, fluffy child it once was but with a new foul smell and disgusting complexion.
FBLRRRFFBLRLRT PFFFRRRRR
One space over, out comes the little girl who'd tried to hide right in front of the creature. She looks just as terrified and frail as she had when she'd been yanked out from under the bed, her expression preserved perfectly in her new foul form.
FPBLLRRBFLFLPRT BLRRRFBLRT
Next in line is the pure-hearted boy who'd tried to fight the wicked beast and been defeated so swiftly and effortlessly. For his attempted heroism he's earned himself a place in the lineup among all the other hapless children the monster has eaten.
PFFFRRRBLRRT FLBLRRBLRLTT BLRRFFRLT
And lastly, it defecates the remains of the girl who'd nearly hidden successfully, the one who just couldn't quite get a hold of the help she needed. Her face is still contorted into the miserable expression of hopeless dread she'd worn when she'd been devoured, and she makes for a fine final trophy for the collection tonight.
After a brief moment of admiration for its handiwork, the monster stomps away to haunt another part of its lair. It leaves the four former children behind as it leaves the room.
Just four more statues in its cruel collection.