Chapter Text
“Huh? That’s it?”
Satan nodded in confirmation to his cohort, with whom he’d been brainstorming ideas for anti-Lucifer action for the better part of the past hour. “Not every plan has to involve some sort of curse or elaborate scheme,” he said with a mischievous smirk. “Lucifer would never see something like that coming, don’t you think?” It was normally Belphie who suggested simpler plans, but he was quite sure he’d struck gold. Quite literally, in a sense.
And he was definitely right; if Lucifer did anticipate the two of them sneaking into his room and pissing everywhere Belphegor would have been almost alarmed at his vigilance. He could detect curses easily which usually resulted in Satan getting himself into trouble without ever landing a hit, and besides that, Satan’s schemes tended to veer on the more violent side of what Belphie liked to get involved in. This, though? A perfect crime, and hot as fuck.
“Alright. I’m in.”
They went their separate ways after shaking hands, the only consideration now to be made being when to do it. And, conveniently for them, the Anti-Lucifer League’s unsuspecting victim greeted them the following morning with fantastic news.
“Diavolo has asked me to accompany him to the human world for a few days. I shouldn’t be gone longer than three nights,” Lucifer explained to his brothers as he sat down for breakfast. More sternly, he added, “I expect you to all be on your best behavior.” His eyes locked onto Mammon directly.
Good , thought Belphie, he’s got no idea. He and Satan exchanged the briefest glance, excitement rising in both of them with the window now wide open to strike, and with potentially several days no less. If not for the deep exhaustion in his voice they both would have been suspicious themselves that they were being set up, but certainly Lucifer wasn’t that convincing of an actor.
As the day went on Belphegor spent most of his time in class daydreaming, now singularly focused on the opportunity that had so perfectly lined up for them. He made a concentrated effort to keep hydrated, though it was still long before the end of the day when his bladder was first too full to keep control of it and as he reluctantly used a urinal another idea struck him.
[Belphegor] Hey Asmo, do you have anything for like
[Belphegor] Piss stuff?
His brother responded to the text almost too quickly, as if he’d been dying to be asked about the subject.
[Asmodeus] Oh? Who do you think I am? Of course I do~ <3
[Asmodeus] Belphie, my precious baby brother, I had no idea you were into that <3
[Asmodeus] Solomon made this amazing potion for me. Just a little bit will fill your bladder to bursting immediately~. If you drank a whole bottle you could fill a bath
[Asmodeus] That’s bad for your skin, though, so be careful. Of course, I have things for that as well ;)
His messages were interspersed with flirtatious and heart-filled stickers and Belphegor could practically feel his arousal at the mere concept of someone indulging their kink through his DDD. Still, in this case he was grateful for his older brother’s enthusiasm--which also led to another consideration.
[Belphegor] Thank you... that potion sounds perfect
He swiped out of the chat and pulled up his messages with Satan.
[Belphegor] Hey, what if we invite the others to join us?
A few moments passed.
[Satan] You think they’d like to?
[Satan] I don’t see why not.
[Satan] I’m in class with Asmo and Mammon right now. I’ll ask them after.
[Satan] I doubt Levi would but I’m sure Beel will.
Belphegor concluded the brief conversation with a smirking sticker, now entirely lost in his fantasies. The rest of his classes couldn’t have gone fast enough, and by the time the brothers had all returned to the now Lucifer-free House of Lamentation his bladder was practically bursting again from his enthusiastic hydration.
He caught Levi on the way in and had promised Beel to treat him to some snacks later if he came right away to the common room, where Satan was already sitting along with Asmodeus and Mammon for their impromptu family meeting. With Solomon’s potion alone the amount of damage they would be able to do would be immense, especially since he and Satan had agreed to use Lucifer’s room as many times as possible while he was gone. He was sure Asmo would join enthusiastically, too, and Mammon might at least leave his mark somewhere as he inevitably started rifling around for things to sell.
“So, what’s this proposal of yours?” Asmo was the first one to speak to the group, his eyes glowing with lust as surely he drew the connection to Belphie’s earlier messages.
“I’ll get right to it,” Satan declared. “We’re going to get some revenge on Lucifer by pissing in his room.”
Given that the culprits were constantly making much more lethal attempts to get back at the eldest, no one seemed particularly surprised by the development. As expected Asmo wriggled with excitement, and while he did exclaim at the statement the deep red shade of Leviathan’s face confirmed he was at the very least considering joining in. “Are ya out of your minds?” Mammon asked, loudly but with no real intensity in his tone. “He’d kill us all! If we were lucky!” That risk had never stopped him from stealing from, lying to, or otherwise creating headaches for Lucifer before, of course.
Belphie shrugged, his tail swaying over the arm of the couch. He was desperate for the conversation part of things to be brief before he wet himself right there. “Yeah, but it’ll be so fun,” he replied dismissively, glancing at Satan who he imagined was probably equally eager to just get on with things now that they’d all been informed of the opportunity.
“Anyway, we’ll be doing it regardless, so feel free to make up your own minds.”
With that, he stood up, and the Avatar of Sloth followed suit with uncharacteristic swiftness, his body aching for relief and his rising arousal making him even more short of patience to begin their fun.
“Are you going right now?” Asmo jumped to his feet, his face flushed. “Don’t start without me! I’ll meet you there with my potion!” He darted off ahead of them toward his bedroom while the two made for their destination as hastily as they could without putting more strain on their nearly overflowing bladders.
It was a small blessing that, despite Mammon always trying to take his things when he was gone, Lucifer never bothered to lock the door to his room. Belphie and Satan didn’t bother closing it when they entered since there was an open invitation to their new bathroom, both of them hurrying to unfasten their belts in anticipation. Satan unzipped his pants and pulled out his cock, looking around for a suitable first target while they waited for Asmo to join them. Belphegor had already made up his mind, stripping off his pants and underwear completely before climbing up onto the right side of his brother’s bed. He tossed his shirt up against the wall with the rest of his clothes as well, now wearing only his binder and a devious grin as he sat down on Lucifer’s pillow and spread his legs apart.
“Oh, you two are so eager !” Asmodeus gushed as he finally appeared in the doorway, making quick work to remove his own clothes. He took a sip from the glass bottle he’d brought with him, setting it down on the coffee table, and then hopped up next to Belphie on the bed, his eyes fixed lovingly on his brother’s already hard t-dick.
“Alright, I can’t hold it anymore.” Satan let out a satisfied groan as he aimed at the center of the rug and immediately began pissing, his stream forceful as his body strained to empty itself after holding it in for so long. There was far too much for the carpet to absorb in just one spot, a puddle forming and causing piss to splatter around messily for a bit before the demon decided to redirect, waving his cock back and forth to hit as much of the fabric as he could.
The sound of his brother’s relief pushed Belphie over the edge as well, no longer able to resist his aching bladder’s demands. A small spurt shot out first, and after a second it turned into a steady, hissing flow that splashed out across the pillow, occasionally his breaths causing it to shift and spray out over the edge and onto the blanket as well.
Asmo, meanwhile, grabbed one of the other pillows, clamping his thighs around it and grinding his clit against it as he watched his brother darken Lucifer’s sheets. His pussy was soaked from the performance and he moaned as he rocked his hips back and forth, the building pressure from both his arousal and the potion at work culminating quickly in him coming, accompanied with a squirt of piss directly into the fabric beneath him. He trembled as he pushed to relieve himself more, straining in the afterglow of his orgasm, though it didn’t take long for his body to recover and give in.
By the time Satan was finished he’d managed to cover almost the entire left half of the rug, with a few stray droplets on the hardwood where he’d saturated it most thoroughly. Belphie was still going strong, though he paused to reposition himself with his back against the headboard and slowed his release into short bursts so that the pillow had time to absorb his piss completely. There was plenty of time to get the rest of the bed soaked; he wanted to make sure the place Lucifer laid his head at night took the brunt of his first attack.
Asmo halted his stream, as well, tossing the pillow he’d marked toward the foot of the bed and sitting next to Belphegor in a similar pose. He made a V with his fingers on one hand to stretch his folds open, reaching the other over to rub gentle circles around his brother’s cock. “Oh fuck,” Belphie moaned involuntarily, his hips arcing forward into the touch. Asmo could certainly be bothersome at times but there was no denying he knew what he was doing when it came to pleasure. Though, as turned on as he was from emptying his bladder on Lucifer’s bed, Belphie was pretty sure just about any stimulation on his dick would easily get him to climax.
The two of them continued pissing in tandem, with Asmodeus using his fingers to aim and spread his fluid across as much of the bed’s surface as possible, wiggling from side to side to help direct the stream. The pillowcase beneath Belphegor no longer had any dry spots remaining by the time he was finished. He let himself sink into the soaked cushion and relished in the feeling of the warm wetness on his vulva, adding his juices to the mess. Satan, too, had moved on to rubbing his cock, turning his head to watch his younger brothers intently as he did.
Still pissing steadily with the help of Solomon’s potion, Asmo shifted again, climbing over Belphie to position himself between his legs, rising into a crouch so his stream was aimed directly onto his cock for a moment with a sly smile. The sensation made him cry out, but he couldn’t resist bucking his hips upward to seek friction again, so close to orgasm it was almost painful. He could see Satan increasing the pace of his wrist and wondered if that was Asmodeus’s motivation, to give him a show as well. The thought didn’t linger long, though, when his older brother finally stopped teasing and lowered himself so their cocks were rubbing against each other, taking no time at all to make Belphie’s mind go blank entirely as his body shook with pleasure.
Asmo kissed his forehead and hopped off the bed, now satisfied. “Would you like a hand, too, Satan~?” he cooed, continuing to massage his clit when he realized Satan’s eyes were firmly locked on his crotch.
“No, thank you.” His older brother’s voice hitched. “This is good.” A few more pumps of his hand was all it took for Satan to finish, leaving him panting as cum shot from his cock into the golden puddle pooling around the edge of the carpet. Asmodeus spread his legs apart a bit while he worked himself up, the heavy breaths of his brothers making it easy; in a minute he let out another erotic moan as he came, and somehow his bladder released another brief trickle of urine with the overstimulated shudder.
Satisfied, he stepped over to the corner of the bed that Belphie’s stream hadn’t reached and used the comforter to pat his lips dry. “Alright, boys, I have to go wash up now,” he announced, not bothering to put his clothes back on before leaving. From farther down the hall they heard him add, “You’re welcome to join if you want!” as if it was an afterthought, though neither of them had the energy left for one of Asmo’s... intensive baths.
Satan buttoned up his pants again and patted Belphie on the head before heading off himself, planning on having some tea and preparing for a second round later on. Belphegor, too, eventually got up from his spot, though he didn’t bother going very far, deciding himself to take advantage of the potion Asmo had left behind to indulge in another bit of fun. He took a sip, and then for good measure another smaller one, and then flopped onto the so far untouched sofa for a nap.
The sound of liquid splashing onto the glass coffee table roused Belphie from sleep. He blinked groggily, turning his head to see the tail-end of Satan relieving himself for the second time that evening, the pool of yellow on the tabletop trickling over the edge in several places.
The lower half of the sofa was cold and damp and he felt a twinge of satisfaction at how much he’d soaked it during his nap, though in spite of already emptying his bladder while asleep he already had a pressing urge to go again. “Good morning...” he mumbled sleepily to his brother, stretching his arms up over his head with a little sigh. Since the spot beneath him was already soaked he decided to roll onto his side, hiking one leg up onto the back of the couch before letting go. The cushion wasn’t very absorbent so the forceful stream splashed back at him a bit, though a majority that was repelled by the suede just cascaded down into the gap between the back and seat.
“Enjoying yourself?” Satan asked idly, coming over to sit on the edge of the sofa by Belphie’s head that was still dry.
“Uh-huh.” Belphie slipped one of his hands between his legs to start rubbing his dick again, the motion causing the still heavy flow of his piss to spray haphazardly toward the arm of the sofa and thoroughly soaking his own leg in the process. Since he’d already been sleeping in the mess it didn’t bother him in the slightest; in fact, after sitting for so long in the already cold spot from earlier the fresh hot liquid was refreshing.
With the way he was positioned he couldn’t see his older brother, but he could hear his hands start working his own cock as well, the two of them filling the otherwise silent room with soft grunts and a steady hiss.
The moment of quiet was interrupted unexpectedly. “Damn, it reeks in here.” Mammon didn’t seem particularly bothered despite the complaint, though, or at least not enough to leave. “Lucifer’s gonna kill ya for sure.”
“Since you knew and didn’t stop us, I’m sure you won’t be safe either,” Satan noted, curious to see if he could goad another of his brothers into joining in on the destruction. Based on the way Mammon seemed to tense up at his observation it seemed like it would not be difficult.
“Huh? N-no way, there’s no way he could prove I knew a thing!"
“You come in here every time he leaves to try to steal from him,” Belphie decided to chime in. “There’s no way he’ll believe you didn’t know.”
Mammon was an idiot, but the logic was simple enough that even he couldn’t argue. Satan snorted with amusement at the look of defeat on his older brother’s face at the realization he was absolutely going to be punished even if, for once, he didn’t even do anything wrong himself. “Might as well have some fun.” Belphegor had finished peeing and rolled over once again onto his back as he continued touching himself lazily. “Maybe even teach him a lesson about being such an ass all the time.”
That seemed to sufficiently rile him up. “Y’know, you’re right. This’ll show him for messin’ with the Great Mammon!” His usually obnoxious energy was, in this context, deeply amusing to both of the instigators, who watched him appraise the room for a moment before settling on the pillow Belphie and Asmo had soaked together earlier. Both of them would have liked to see him find a new spot, but it was satisfying enough to see the second eldest pulling down his pants and leave his mark. It was a brief display, and Mammon wasn’t inclined to get off like Asmodeus had been when he was with them; nonetheless, it was exciting.
After finishing themselves off, Satan this time adding his cum to the pillow while Belphie made use of the untouched arm of the couch to wipe his folds dry, they parted again to clean up for dinner. Confirmation came from Lucifer via a text to their household chat that he wouldn’t be returning tomorrow--still, even knowing they would have at least another full day and night, the demons weren’t about to let any time go to waste. It became an unspoken competition between them for the rest of the evening to see who could piss more, with Asmo periodically contributing to the golden puddle that covered half the floor by the time they were all too tired to stay awake any longer.