Chapter Text
To say that Mammon and MC have a strange way of interacting with each other is an understatement, but somehow, they make it work. Mammon has a terrible tendency to be a tsundere, to put it simply, always embarrassed to show any signs of genuine affection towards MC. MC is kind-hearted and forever supportive of Mammon and all of his brothers and her other friends in the Devildom, but she also has a tendency to get very aggressive when she’s upset. Not to mention how quickly Mammon will lose his shit if anyone tries to get too close to MC. He will never admit to that, either, which is honestly adorable to MC, how hard he’s trying to be tough and cool while still caring so deeply for her.
Mammon will tolerate seeing MC around his brothers, the angels, Diavolo, even that shady sorcerer, Solomon. But anyone else? The hairs on the back of his neck stand up, he finds himself clenching his fists, and he has the nearly irresistible urge to go full demon and tear them to shreds. Lucifer literally had to hold him back once because a demon put his hand on MC’s shoulder while trying to trick her into letting him copy her notes. One hour of Mammon grumbling about how nobody was allowed to touch his human but him later, he’d finally calmed down after being invited to MC’s room for hang out time.
The problem was, Mammon was terrified of her getting hurt. He was even more terrified of losing her as a friend, because she was the only one who had ever shown him kindness or compassion, even despite his greedy ways. She also listened to his side of things whenever his brothers blamed him for something, and even if he really was at fault, she never yelled at him or called him a scumbag. Hell, once she’d even scolded Asmodeus for calling him a scumbag just because his favorite perfume had gone missing. MC was actually angry that he immediately blamed Mammon even though she’d actually seen him put it in a drawer once. Sure enough, that’s where the perfume was, and Asmodeus had come back out to apologize to a still very much dumbfounded Mammon.
But because he was afraid of those things, he was too scared to admit to anyone, even her, how much he really cared about her. The truth was, if anything happened to her? Mammon would likely go into a demonic rage that could only be stopped either by his brothers fighting him or whoever hurt her being torn to bloody shreds. As it stood, he could hardly restrain himself any time a demon knocked into her by accident, even though she always assured him she was fine and went about her day. She probably wasn’t even aware of how paranoid he was about her safety all the time. And frankly, it was extremely ironic that he was doing the exact opposite of what his brothers expected him to do, which would be to slack off in his duties to protect MC like he actually had done in the beginning.
“Mammon? Are you in here?”
Mammon looked up from the article on his phone that he hadn’t really been reading, and quickly shut his phone off to get up and open his door. As soon as he did, MC stepped into his room, smiling.
“Oh, good. I was wondering if you’d like to go shopping with me? We haven't had much time to hang out lately, so I was hoping a shopping trip would be a nice way to spend some time together!”
Mammon felt his heart pounding in his chest, his eyes glancing over every inch of her as he nodded dumbly. She was so damned cute, with the thigh-highs she wore to go with her short black skirt, a red tube top, and an unzipped hoodie that he was pretty sure belonged to one of his brothers, maybe even him. He didn’t keep track of his hoodies, really. She smelled like lavender today, so Asmo must’ve given her a new body wash to use, or maybe it was one of his hoodies. Last week she smelled like strawberries, and the week before it was roses. She must’ve washed recently, too, because her hair was still slightly damp, and there was a pink tint to her skin that he most definitely did not find attractive. Nor did he like the way her lower lip pouted outwards ever so slightly, or that cute little tilt of her head she always seemed to do when she was talking to a friend. Like she was doing now, and adding a smile when he nodded.
“Great! Let’s go then, I want to have plenty of time to shop before the stores close!”
Before Mammon could respond, MC grabbed his hand and pulled him out of his room, seemingly unaware of his flustered reaction to her holding his hand as she pulled him downstairs and out of the house. Only when they were on the street did she let go of his hand, and even then, she stuck close to him, her arm brushing up against his almost every other step.
“Man, it’s kinda cold out tonight.”
Mammon did his best to ignore how cute she looked when she shivered and her nose wrinkled a little. “That’s cuz you’re not wearing pants, dumb human. ‘Course your legs are gonna be cold.”
“Oh, right, silly me. I guess I was just so excited to go shopping with you I forgot to put on something warmer!”
MC giggled as she zipped up the hoodie she was wearing, once again totally unaware of what she was doing to poor Mammon. He was somewhat used to her showing affection towards him, but sometimes even these small little gestures or things she would say still sent him reeling.
“Woah! Look at that dress, Mammon!”
Mammon hurried to follow MC as she darted across the street to a storefront, staring through the glass at a black and gold dress with a lot of complicated-looking straps. But why did she like it? Black and gold weren’t her favorite colors.
“You like that one? How come?”
MC giggled and lightly pushed his shoulder. “Don’t be silly! Don’t you see the resemblance?”
Mammon frowned at the dress. “Resemblance? To what? Quit being weird, MC.”
MC pointed to the dress. “Mammon, it looks like the outfit you’ve always got in your demon form! See, the black and gold, and all the straps? I think you were the inspiration!”
Mammon’s eyes widened, and he leaned closer. “What in the Devildom...hey, you’re right! The designer must be a fan!”
MC started peering at the price tag. “Hmm...well, either they’re a fan of you, or they’re a fan of your outfit. Either way, I want that dress.”
Mammon frowned. “Huh? It costs a thousand Grimm! What the hell do you want it so bad for?!”
MC rolled her eyes like he’d asked a dumb question. “Why wouldn’t I? You are the first demon I made a pact with, remember? And one of my first friends here in the Devildom, even if you were a bit reluctant to enjoy spending time with me at first. Of course, I want to show my support by wearing your colors! Plus, it would look super cute, don’t you think? We'll match!”
Mammon’s jaw dropped, as he was totally flabbergasted by MC’s words. She wanted to buy it simply because it reminded her of him? What the hell…? MC grabbed his arm and pulled him into the store, then pointed to the dress when one of the demons working there saw her.
“Do you have any of those dresses in a medium?”
The demon nodded and brought it out, and MC giggled happily. “Yes! Okay, here you go!”
Just like that, she forked over the thousand Grimm and happily pulled Mammon out of the store after her. “Okay, let’s go! Your favorite clothing store isn’t far from here, right?”
Mammon frowned. “Hold on just a minute, I don’t got any Grimms on me, and-”
“Oh, that’s okay! I can buy you some stuff! I saved up some extra Grimm so we could go shopping together!”
Mammon’s jaw dropped again. She was gonna buy him stuff? Sure enough, MC dragged him into his favorite store, even though he didn’t remember ever telling her it was his favorite, and pulled him over to some clothes that he actually very much liked. When she looked at him expectantly, he started perusing the racks, finally settling on a pair of black jeans with gold buttons and a gold and black jacket. If MC wanted to match with him, then he could match with her, for sure, even though he wouldn’t say anything about it. MC smiled at him once he found the right sizes, then pulled him up to the counter to pay. The demon working the register seemed very bored as he rang up the items, but he actually seemed surprised when MC forked over the Grimms.
“Thank you for your purchase.”
“You’re welcome! Thanks for the clothes!”
MC pulled him out of the store, then made a beeline for the restaurant across the street. “Mammon, I’m gonna go into the bathroom and change into my new dress. Do you want to change into your new clothes, too?”
Mammon nodded at MC, and she let go of his arm to walk into the ladies bathroom. Mammon took his bag into the men’s and changed quicker than he needed to, just so that he could get out first and wait for MC. But he maybe should’ve stayed in the bathroom longer, because when MC emerged a few minutes later wearing the dress she said reminded her of him, Mammon’s mouth went dry, and he suddenly wished he’d gotten the pants a size bigger than he needed so they wouldn’t be so tight on his crotch. Even worse, a bunch of other demons turned to stare at her. The dress showed off way too much. The majority of her legs were on display, as the bottom hem of the dress only came down to a little above mid-thigh, and the top half of the damn thing showed way too much cleavage with the V-neck collar. The back was completely open, too, with those complicated straps going across her skin across her upper, middle, and lower back, as well as her arms. MC beamed at Mammon when she saw him, totally oblivious to the male demons who were starting to pull their DDDs out to take pictures of her. Mammon let out a possessive growl and quickly whipped his jacket off to cover MC, ignoring her confused protests as he zipped it up to her neck.
“Stupid human. You’ll freeze! I thought you were gonna keep the socks and the hoodie, dammit.”
MC frowned at him. “But Mammon, you covered up the dress-”
“Lucifer’ll kill me if you get sick, ya know?!”
“O-Oh...okay then?”
Mammon spared a glance, satisfied to see the male demons putting their phones away with frustrated looks. MC stopped on the way out the door to buy cupcakes for both of them from the front counter, and then she brought him to the outdoor seating and sat down, smiling.
“This jacket is really warm. Thanks, Mammon.”
“I told ya, I can’t let ya get sick.”
“Aww, thanks for looking out for me! At least I always know I’m safe when you’re around.”
Mammon had to turn away and stuff his face with a bite of his cupcake just to hide his raging blush. Dammit, how could she not know how it affected him when she said stuff like that?! And why the hell did she look so damn good in a jacket that was two sizes too big for her?! She looked so happy and comfortable, though…
“Oi, human.”
MC tilted her head and smiled, and Mammon had to really struggle not to focus on the pink frosting on her lips, which he definitely did not want to clean off with his tongue and- argh! What was he gonna say?
“You wanna go flying? It’s way less boring than just walking home, ya know.”
MC’s entire face lit up. “You’d take me flying?! Oh, Mammon, I would love to!”
When Mammon’s eyes widened, MC flushed with embarrassment. “I mean, I’ve wanted to experience what flying was like for a long time, but I didn’t want to impose in case it was considered rude or anything like that.”
Mammon snorted. “Why didn’t ya just say something?! Hell, everybody likes ya so much, I bet even Diavolo would take you flying if you asked him!”
MC giggled, licked the frosting off her lips, and then smirked at Mammon. “Oh? Are you saying that you like me, too?”
Mammon gulped. Okay, that smirk should be illegal. Wait a minute, was she trying to tease him!?
“O-Oi, what the hell are ya saying?!”
MC giggled again. “Nothing, Mammon, I just get really happy when you admit stuff like that, that’s all. But I really would love to go flying. As long as you promise not to drop me, that is.”
Mammon snorted. “Of course I won’t drop ya. I’m not an idiot.”
As soon as he said it, Mammon winced, already knowing what was coming. Why did he have to say stuff like that all the time and-
“I know you aren’t. I’m just teasing.”
Mammon very nearly flinched at the words. Right, he forgot that MC never called him an idiot, either. Damn, he was so used to his brothers leaping at every opportunity to say it that he still got shocked every time MC didn’t. Mammon shook it off and finished the rest of his cupcake, so deep in thought that he wasn’t paying attention until he heard MC’s chair move. He glanced over to see why she was getting up, only to freeze. She was bending over the table, her hand outstretched and a gentle smile on her face.
“Hold still. You’ve got frosting on your cheek.”
Mammon didn’t have any issues complying with her orders, since he felt like he was literally incapable of moving, or even breathing, as her thumb gently swiped across his cheek and collected the small glob of pink frosting. She sat back down, and started looking around.
“Oh. There’s no napkins. Oh well.”
With a shrug, MC brought her thumb up to her mouth and licked it clean, while Mammon officially spiraled into a full-blown hormonal panic. Holy shit, she looked really fucking good, even though she was just licking her own thumb. But seeing her little pink tongue dart out and lick the pad of her thumb clean...licking up the frosting that was on his face a second ago...hot damn, his jeans were definitely too tight now. What the hell was MC doing to him?
“Mammon? It’s getting colder, maybe we should start heading back.”
Mammon blinked out of his dirty thoughts and swallowed thickly before standing up and awkwardly shuffling away from the table while MC threw away the wrappers from their cupcakes. But then he remembered that he offered her a ride back home, so with a quick thought, he transformed into his demon form and stooped down a little.
“Hop on my back.”
MC’s eyes widened, but then she smiled and climbed on, looping her arms around Mammon’s neck and gripping his hips with her legs, with Mammon’s hands quickly moving to hold her thighs (which felt really good, unfortunately for his already raging libido). When Mammon stood up, he sucked in a sharp breath, surprised by how well he could feel the shape of MC’s chest pressed against his back. Shaking it off, he spread his wings and then launched into the air, quickly flying up to a good flying height so he could go over the tops of the buildings. Almost right away, MC let out a squeal of delight and tightened her grip on him, laughing freely.
“This is amazing, Mammon! The view is incredible from up here!”
Mammon glanced back at her over his shoulder, his heart skipping a beat or two when he saw the slight flush on her face from the wind and the bright smile she was wearing. He turned to face forward again, tilting his wings to make a turn around a larger building and chuckling to himself when MC unhooked her arms to throw them up in the air and shout her joy into the Devildom sky. Her joyful laughter was so strong, it was practically infectious, and Mammon soon realized that he was grinning like an idiot, happier than he had ever felt in a long time without hiding it.
“Hold on!”
MC squealed and threw her arms back around Mammon as he flew higher and then did a few tight spins, showing off his flying skills just for her. Eventually, they made it back to the House of Lamentation, and Mammon landed outside the front gates and then carried her up to the front door, not quite ready to let go of her yet. But when he did stoop down so she could climb off, she didn’t move right away. Instead, she leaned forward over his shoulder, her lips right next to his ear.
“That was the most exciting thing I think I’ve ever done, Mammon. Thank you.”
Before Mammon could respond, she leaned even closer and pressed a kiss to his cheek. And then she slid off his back, fixed her clothes and smoothed down her hair, and happily walked inside, while Mammon was frozen in place on the front doorstep, totally floored that she’d actually kissed him. Well, it was only his cheek, but that still counted, dammit! Mammon had to physically shake himself before he could walk inside, and as soon as he did, he got hit in the face by his new jacket. When he caught it and looked up, he saw MC giggling and doing a spin in her dress.
“That was so much fun!”
“Woah, hello there, darling! That dress looks lovely on you!”
MC turned to beam at Asmo. “Thanks, Asmo! I love it too!”
“What on earth are you so happy for, MC?”
As Satan walked in, MC giggled and turned to Mammon with a smile that actually made him squint, it was so bright. “Well, I went shopping with Mammon, and then on the way home, he took me flying! I had no idea I could feel so free, soaring up in the skies with the wind in my hair! It was incredible!”
Asmo giggled. “Aww, if we’d known you would like flying so much, we’d take you more often! Well, those of us with wings, of course.”
Lucifer walked in and frowned. “MC, you went flying? That’s very dangerous, you know.”
MC rolled her eyes. “Oh, I was fine, Luci, Mammon had me!”
Satan frowned. “Still, accidents happen.”
There it was. Always doubting him and thinking he’d mess up everything. Mammon’s mood soured considerably, but before he could walk off to his room, MC huffed.
“Don’t be ridiculous! Mammon would never put me in danger! He is my protector, after all. I trust him with my life.”
Mammon froze, eyes wide and heart thundering in his chest, as MC made an adorable angry face, her cheeks puffed out and eyes narrowed, at Satan and Lucifer. And then Lucifer actually smiled a bit.
“Very well, as long as you don’t do anything too crazy, I will allow it.”
Mammon had to swallow twice before his mouth stopped feeling as dry as a desert. MC never failed to amaze him, even after being here for several months already and somehow managing to make pacts with him and all of his brothers, even Lucifer and Belphegor. Hell, at this rate he wouldn’t be surprised if she managed to make a pact with bloody Diavolo.
“You look a little rattled there, Mammon. Is something wrong?”
Mammon blinked and looked at Satan. “Huh?”
MC turned around and looked at him, frowning. “Hm? Mammon, are you okay? You look...shocked.”
“Uh...I’m fine. Just thinking about something.”
“Hehe, racked up some more debts again?”
MC shot Asmo a glare. “Asmo, be nice! Mammon, is something bothering you? Can I help?”
Mammon shook his head quickly. “Nah, it’s fine. I’m fine.”
Lucifer continued to frown at him. “Mammon, why are you sweating?”
Mammon frowned and looked at his hands. Sure enough, there was sweat on his palms. But he didn’t feel all that warm, so why was he…?
“Uh-oh. It’s not what I think it is, is it?”
Mammon barked out a curse and darted up the stairs, running into his room and locking his door behind him so fast, he almost hit his own face on the doorframe. He couldn’t even pause to answer MC’s confused shouts, but of course she followed him upstairs and started knocking on his door.
“Mammon! What’s going on, are you okay?!”
“Go away, MC! I’m fine, ya just can’t be near me right now!”
“Huh? I don’t understand, if something’s wrong, maybe I can help you!”
Mammon covered his mouth with his palm to stifle the groan he made just at the thought of what those words could have meant if not for MC’s obvious innocence. And then he heard more footsteps outside.
“MC, it really is best if you leave him alone for a while. This is a demon thing, not exactly something you could help with.”
“Hey, that isn’t fair, Satan, and you know it! I’ve helped with a bunch of your other problems before! And Mammon looked scared!”
“MC, darling, he’ll be fine. You don’t need to protect him, he is a demon after all.”
“So what?! The pact isn’t a one-sided thing, you know! If Mammon protects me, then I’m going to help him, too! Could somebody at least tell me what’s wrong with him, since you all seem to know?!”
“MC, it’s really best if you don’t-”
Mammon heard MC let out an indignant huff. “That’s it! Mammon, I command you to open that door and tell me what’s going on!”
Mammon froze, or tried to, anyway. His hand was already moving to unlock the door.
“MC, don’t!”
“Freeze, both of you!”
Mammon could hear grunts from his brothers as they were frozen in place, and by the time Satan shouted at her to stop again, Mammon had the door open, and he knew right then that he was screwed. He was already sweating profusely, and the tent in his pants hadn’t gotten any smaller, in fact, it had gotten bigger. He should’ve recognized the signs earlier when he couldn’t stop himself from being aroused by every little thing MC did. His brothers would probably get theirs soon, too, but why did his have to hit him now?!
“M-MC... please, let me go back in my room, yer not safe-”
“I told you, Mammon! I trust you with my life, you could never hurt me! Now tell me what’s going on!”
Mammon grimaced and tried to hold it in, but he started speaking anyway. “I’m in rut!”
MC froze. “W-What…?”
Asmo groaned. “It happens to demons every year. It doesn’t hit all of us at the same time, but it usually happens at some point during the spring. Mammon’s hit him early this year.”
“Rut...? As in…”
Satan growled. “Mating season, yes.”
MC went from shock to a full, raging blush in about two seconds. “O-Oh. Um...you two can move now.”
Satan and Asmo jerked as they regained control of their bodies, and Satan immediately reached for MC’s arm. But as soon as he made contact, a violent possessive instinct rose up in Mammon’s chest, and he stepped forward and smacked Satan’s arm away with a vicious snarl. MC yelped as Mammon pushed her behind him, already back in his demon form and growling at Satan.
“Shit. Brother, calm yourself, it’s just your instincts telling you to-”
“Back. Off.”
Satan took a few steps back, and Mammon had a full-body shudder when MC reached up and put a hand on his arm. “M-Mammon...you’re shaking. Are you in pain?”
Mammon grit his teeth, knowing that he should shrug her off and lock himself in his room, but unable to make himself do it. “I-I’ll be fine. It’ll pass in a week or so, just-”
“A week?! Mammon, that’s so long to suffer for!”
Asmo sighed. “We’ve all done it before, sweetheart, really, it’s not a big-”
“Isn’t there anything that helps?!”
Satan crossed his arms over his chest, surprisingly looking a bit concerned as Mammon doubled over and held his knees while he started to pant. “Other than actually mating? No. Nothing eases the ache or the urges, so the best solution is to just lock yourself away from everybody else and wait until it passes.”
MC bit her lip, and then she gave Mammon’s arm a tiny squeeze. “W-What if I...um, what if I helped him?”
Mammon shuddered again and let out a small moan, his mind already filled with images of how MC would look underneath him, moaning his name and begging for more, and-
“MC, that is really not a good idea, demons are way more powerful than humans, even in bed-”
“But I have my pact with him, right? If he ever gets too rough, I can just use the pact to force him to stop, right? I’ll be fine. Plus, I’m not ovulating right now, so I shouldn’t get pregnant, either.”
Asmo bit his lip, looking worried. “MC... that isn’t a guarantee. What if for some reason you are unable to speak in order to use the pact when you need to? Like if he’s kissing you or covers your mouth with his hand?”
MC flushed a bit. “I-I still trust him. And I don’t want to see him suffering. You guys are more important to me than anyone else I’ve ever known...s-so I really want to do this.”
“MC…”
Mammon bit back another moan and threw a hand out to hold up his weight with the wall. “Fuck...I-I can’t…”
Finally, Satan nodded. “Fine. If you think you can handle it, then go ahead. But if you ever feel as if you’re in danger, or the pact mark doesn’t work for some reason, don’t hesitate to call one of us with your other marks, if you can, or scream for help.”
Asmo smiled and giggled. “Somehow I think she might be screaming anyway, dear brother.”
Mammon lost all control then. He spun around and grabbed MC’s waist, drinking in her shocked gasp as he kissed her. He tried to be gentle, he really did, but he knew that he was probably a little rougher than he wanted to be. But MC just sighed into his mouth and kissed him back, willingly tangling her tongue with his as she carefully walked backwards into his room. Mammon was already growling as he kicked his own door closed, and then he was pushing her towards the bed and tearing at his own clothes. MC helped him out, pushing his trembling hands out of the way and deftly removing the complicated clothes of his demon form. Meanwhile, Mammon did his best to remove her dress without tearing it, though he was so focused on getting to her bare skin that he really wasn’t as careful as he should be.
“Oh my Diavolo, please just tear it, I need to-”
Mammon obeyed immediately, his hands shredding her shirt into two halves and tearing it off of her. Her panties were next, ripped apart at the seams by his needy fingers. MC reached back to unclasp her bra, and as the cups fell away, Mammon picked her up by the waist and threw her onto the bed, pausing only long enough to shove his pants off before he pounced on top of her and kissed her again. MC was all about the kissing, too, tangling her tongue with his while her hands roamed across his shoulders and her nails lightly scratched his back, sending a delicious tingle right down his spine that made him shiver. One of her hands moved up to his hair, pulling slightly, and Mammon had to pull away from her mouth to moan.
“Oh? Does my precious Mammon like a bit of pain with his pleasure?”
Mammon panted like a dog, desperate for more of her touch. All he could think about was her. And dammit, he still had his damn boxers-
“Mammon, can you look at me for a second?”
Mammon’s gaze snapped up to meet MC’s shockingly warm expression. He panted heavily, about to ask her what she wanted, when she lightly dragged her nails over his scalp and pecked him on the lips.
“I want to do something for you first.”
“H-Huh? W-What are ya-”
All of a sudden, MC’s leg hooked around one of Mammon’s, and she roughly spun him over so that she was sitting on top of his hips. Mammon groaned at the friction, his eyes rolling into his head from the shock of how warm MC’s skin was. But she moved away, bringing a pitiful whine out of him until he realized that she was moving so that her mouth was hovering over his boxers. He was about to protest and say he couldn’t wait that long when she licked him through the thin material, bringing out his loudest moan yet. And then she seemed to get impatient, too, as she grabbed the hem of his boxers and yanked them down, sending his erection bobbing up to smack against his stomach. MC gasped immediately, her wide-eyed expression giving Mammon a serious ego boost.
“Oh my...wow...oh, Mammon…”
With a heavy-lidded expression that Mammon could only describe as pure lust, MC lowered her head and took the tip into her mouth, dragging her tongue across the precum leaking from his tip. Mammon groaned and reached back to grip his pillows with all his strength, fighting to keep his hips still. But then MC caught him off guard again. With one smooth movement, she took all of him into her mouth, humming around him and driving him so crazy that his hips bucked involuntarily.
“Fuck! M-MC! You can’t just go so fast like that, ahn!”
MC had the nerve to giggle around him and start bobbing her head like she wasn’t totally rocking his world with her mouth. And just when Mammon thought he couldn’t get any more overwhelmed by sensation, MC’s hands gripped the thickest part of his thighs and dug her nails in just enough to make him cry out. Within the next few seconds of her pleasurable torture, he was coming undone down her throat. And MC swallowed all of it before slipping the tip out of her mouth with a lewd wet ‘pop’. And even though she was the human and he was the demon, he felt like she was the predator in this situation with the way she was looking at him, especially as she crawled up his body to kiss him, making him taste himself on her tongue. And then her hips shifted, rubbing over his still-sensitive length until his hands shot down to grip her hips, unable to decide whether to push her away or rub her against him some more. She made the decision for him, though, by gliding up and shifting her hips so that when she moved her hips down again, he impaled her in one smooth thrust. Mammon groaned and moved a hand upwards, holding onto the back of her head and gripping a handful of her ass with his other hand. He had to take a minute to kiss her and let himself adjust to her tight heat squeezing the crap out of his dick, because otherwise he was going to cum early, and he would probably never recover from that.
“Oh fuck...Mammon, you’re so big...way bigger than a human.”
Mammon groaned and kissed her again, before pulling back and staring up at her. “‘Course I’m bigger than a human. Ain’t no human man that can compare to a demon.”
MC giggled and pushed her hair over her shoulder, and that was when Mammon noticed she was a little sweaty, when he saw that some of the strands stuck to her skin. Fuck...she looked good like that. No wonder Asmo said that photos of his brothers working out and sweaty got lots of likes on Devilgram.
“Hm? Like what you see, Mammon?”
For once, Mammon decided to just be honest. This was his human, after all, she would never judge him.
“Yeah...shit, you’re beautiful.”
MC blushed, and a powerful urge Mammon couldn’t ignore came over him. He sat up and palmed her breasts, squeezing them and feeling their weight before he leaned forward and took a nipple into his mouth, staring up at her the whole time. MC moaned and reached one hand up to cup the back of Mammon’s head, holding him against her breast as he played with her nipple. He rolled the other one between his thumb and forefinger, and after a few minutes, he switched. MC was squirming a few minutes later, panting from his touch while her hips slowly ground against him, bringing moans out of him, too. Finally, he was satisfied with how puffy her nipples looked, so he flipped MC and himself over, pushed her knees back to her chest, and started pounding into her, letting go of the self-control he’d been holding onto so tightly. MC screamed and reached up to grip his shoulders, a series of high-pitched moans coming right after as she held on for dear life. For the briefest second, Mammon was afraid his brothers would misinterpret that scream for her being in danger and interrupt them, but then all thoughts of that were out the window as MC suddenly tightened up and raked her nails down his back.
“Oh fuck! Mammon, Mammon, Mammon, faster! Agh, Mammon!”
Mammon poured on the speed, his wings fluttering desperately behind his back as every part of him seemed to tense up. MC came with a shout, her eyes rolling back into her head briefly before she raked her nails over his sides, just hard enough to draw blood and make Mammon see stars. He came a few seconds later, but he couldn’t stop now that he’d started. So he kept going, only slightly worried about MC’s stamina when he saw her eyes roll all the way back into her head before coming back to focus on his face as he pounded away. Fuck...hopefully this rut passed before he wore her out too much.
~~~
Mammon woke up to the sound of Lucifer arguing with Satan. He groaned and turned his head, ready to wake up and avoid Lucifer again, when he saw MC’s sleeping face next to him. He almost screeched and fell out of his bed, but then he remembered everything that happened yesterday. Right...she went shopping with him, he took her flying, and then his tut hit...and she...she volunteered to help him, even though she didn’t have to. Mammon slowly, carefully turned on his side, wincing at the slight pain in his back and sides from where her nails had scored him, and settled on the bed facing MC. She stirred in her sleep, her lower lip pouting adorably as she took deep, even breaths. It seemed like he’d had the presence of mind to clean her up after his rut wore off, though he couldn’t quite remember that part, or if she’d even been conscious for it. Probably not. It wouldn’t have been that hard for the multiple orgasms and overstimulation to knock her out, being a human and all. But she looked so peaceful sleeping now...he wanted to kiss her. So he did. He scooted forward, cupped her face in his palm, and pressed a short kiss to her lips. When he pulled away, her eyes fluttered open, and she gave him a soft smile.
“Hey...is it morning already?”
Mammon chuckled and drew her into a hug. “If I say no, will you stay here?”
MC snorted and hugged him back, but she frowned when Mammon winced. “Ah...did I scratch your back too hard?”
“Nah, it’ll heal.”
“Mm. If you say so, but I’m still sorry for scratching you. Say, what time is it?”
Mammon found his phone and checked the time. “Six in the morning. Why?”
“Oh, shoot, I promised Beel I would go to this new coffee shop and cafe that opened near his favorite burger restaurant.”
Mammon sighed. “Meh, can’t you reschedule?”
“Mammon...you are aware of the fact that I love you just as much as I love your brothers, right?”
Mammon froze. “Wait...love?”
“Yeah. Even if you guys don’t really have the same feelings I do, I care about all of you so much. Even Diavolo and Barbatos, Solomon and the angels. Well, Luke is more like my son, but still.”
“Woah...I didn’t know humans could love more than one person like that.”
“Mhm. It’s called polyamorous love. It means that you love more than one person, and you want to be with all of the people you love, with no boundaries or barriers to just loving each other.”
“Huh. Doesn’t sound half bad. But I have one rule.”
MC tilted her head. “Rule? What do you mean?”
“If you’re gonna love all my brothers like you do me, I never, ever want to have to see Lucifer’s ass, got it? That’s just gross.”
MC burst into laughter, the sound of it so pure that Mammon almost literally felt his heart swell. “Oh my Diavolo, you’re ridiculous! But I’m still not rescheduling with Beel. So c’mon, help me up. I can’t feel my legs.”
Mammon shot to his feet and ripped the covers off, ignoring how beautiful MC looked lying naked in his bed in favor of inspecting her legs. “Whaddya mean you can’t feel them?! I didn’t hurt you, did I?”
“What? Mammon, no, you didn’t hurt me.”
“But you can’t feel your legs!”
MC giggled and sat up. “Mammon, that just means I’m sore after the great sex you gave me.”
Mammon froze, his face slowly turning red as MC stretched her arms above her head, clearly not caring about how the stretch made her chest stand out more, especially the hickeys all over them and-
“Holy shit, I just got out of heat and you’re already making me horny again.”
MC snorted and started pulling her clothes on, somehow managing to do so without leaving the bed. Mammon pulled on a pair of jeans and a hoodie, and when MC had her shirt situated, he walked over and picked her up, laughing when she immediately wrapped her arms around his neck and her legs around his waist like a little kid.
“Yes! To the kitchen we go, Mammon-mobile!”
“Oi, I ain’t a mode of transportation!”
“Coulda fooled me last night. That was one hell of a fun ride.”
Mammon turned beet red as he walked out the door. “Quit teasing demons, ya crazy human!”
“Nah, it’s fun.”
As soon as Mammon stepped downstairs, Asmo ran over. “MC, darling, are you alright?! How was it? Was it good?”
“Asmo, what the fuck-”
MC, apparently in a very teasing mood, turned and grinned at Asmo. “Hehe, I can’t feel my legs.”
“Oh my!”
“Asmo, chill out, you’re being gross again.”
Satan rolled his eyes. “MC, are you really alright? It’s okay to admit how sore you are, demons are much rougher than humans.”
“I’m fine, Satan! I kinda like it, honestly.”
“Ew, normies!”
“Oh my gosh, MC, you naughty girl!”
“Hm. Interesting.”
“Shut up, Satan, I’m trying to sleep.”
Lucifer sighed as he walked into the room, oblivious to the previous conversation. “Beel is waiting for you.”
MC slid down onto her own feet, but paused to stand on her tip toes and give Mammon a kiss on the cheek. It was very amusing to watch her waddle away with a slight limp in her step, one that he put there. She jumped right up onto Beel’s back, giggling as he immediately grabbed her thighs and started walking without question. But just as Mammon was about to turn away because MC was gone, he saw the door open again and Beel walking backwards through it. A demon followed him in, shouting something unintelligible. Lucifer got to his feet, as did the rest of his brothers, and when Beel set MC down, she hid behind his enormous back and glanced back at Mammon with an expression that screamed ‘help me’. So Mammon walked over.
“Quit yer yellin’! What the fuck’s going on?!”
“THIS STUPID HUMAN IS THE PROBLEM!”
Mammon stiffened, and he heard Lucifer emit a low growl behind him. “Excuse me? You had best mind your tone.”
The demon threw her hands up angrily. “No! I’ve had enough of watching this lowly human parade around the seven strongest demons in the Devildom like she’s some kind of goddess! Somebody needs to teach her her place, which is below demons!”
MC flinched and stepped backwards, and Asmo hurried over to hug her as tears started streaking down her cheeks. Rage started to brew, getting hotter and hotter as Mammon clenched his fists and stepped forward.
“Just who the hell do you think you’re talking to, bitch?”
“Don’t call me a bitch! You shouldn’t be mad at me, you should be mad at that stupid whore trying to-”
Mammon was in his demon form with his hand around the stupid demon’s neck in the next two seconds. He slammed her against the door frame, snarling as loud as he could as he watched the angry flush drain from her face and get replaced by cold, stark fear.
“SHUT UP! DON’T YOU DARE TALK ABOUT HER THAT WAY, YOU PATHETIC BITCH! YOU’RE JUST JEALOUS BECAUSE SHE’S MORE IMPORTANT THAN YOU’LL EVER BE!”
“Mammon! Calm down!”
“FUCK OFF!”
Mammon would’ve been surprised by the fact that Lucifer actually backed up a little if not for the fact that he was so damn angry. And that was when he realized he was crushing the demon’s throat.
“M-Mammon?”
Mammon flinched and turned to look over his shoulder, his eyes widening when he saw MC staring at him. “MC?”
“I-I’m okay. You protected me. You can put her down now.”
Mammon didn’t miss the fact that she wasn’t commanding him. But he still slowly loosened his grip and lowered the demon to the floor. When his fingers slackened, she started coughing and sputtering. There was definitely going to be a bruise in the shape of Mammon’s fingers later. But right now, he really didn’t care if anything happened because of this.
“Get the fuck out of our house, and don’t ever talk shit about our human again, or next time I’ll rip your fuckin’ head off, got it?”
The demon nodded quickly and ducked out, and Mammon was so angry that he slammed the door after her and growled through his teeth. “Fucking hell!”
“Mammon.”
Mammon spun around, staring at MC, who was now calmly stepping forward. He flinched away at first, afraid of hurting her or scaring her, but she just reached up and cupped his face with her palms.
“I promise I’m okay. All she did was yell at me and call me names, I’m not hurt. You hear me? I’m okay.”
Mammon’s shoulders deflated with every word. How did she even know that he was freaking out because he was so scared of her getting hurt? Mammon slid to his knees, trembling his way out of his demon form as he hugged MC’s waist. She smiled down at him and massaged his scalp, carding her fingers through his hair and humming softly.
“See? We’re okay. Just take deep breaths for me, okay?”
Thank fuck for the pact, because it forced him to take deep breaths when he wasn’t sure if he could. Slowly, the deep breathing helped him to calm down, and he let go of the tension in his body with a sigh.
Beel sounded worried when he spoke. “Brother...are you okay?”
Mammon grunted into MC’s stomach. “I’m fine. She just pissed me off.”
Satan folded his arms over his chest. “Mammon is always protective of MC, but I’m pretty sure the outburst was more violent this time because his heat was so recent. It’s making him territorial over MC, and even more protective than ever.”
Asmo nodded, being serious for once. “I agree. Although she totally deserved it.”
Levi huffed. “Stupid normies…”
Belphie yawned and hugged his pillow. “Can we punish her later?”
Lucifer sighed. “I’ll talk to Diavolo about her. Evidently, it seems to be a more common opinion than we thought, one that needs to be set straight, as MC is still an honored guest of Diavolo’s, same as the angels and Solomon. Just because she possesses no powers does not mean she should be treated any differently.”
Mammon grunted. “I say let ‘em keep doing it so I can thrash ‘em.”
Satan scowled. “And what if one of them goes so far as to try hurting her? No, we need to put a stop to it now.”
Belphie smirked devilishly. “I would be fine with either option. Either we keep beating them up for trying to hurt her, or we put rules in place and then beat up the ones who don’t follow them. Either way would be satisfying.”
MC turned to frown at Belphie. “Bels, what have we talked about?”
Belphie rolled his eyes and sighed. “Yeah, yeah, no extreme violence, I know. But I wouldn’t call a few punches ‘extreme’.”
“Keep it up and you’ll lose your cuddle privileges.”
That shut him up. Belphie grumbled and hugged his pillow, and MC snorted before turning back to Mammon.
“C’mon, why don’ t you tag along with me and Beel at that restaurant? After what just happened, I think I could use the extra protection.”
Damn, she really knew just what to say to him, didn’t she? Mammon nodded and picked her up, ignoring her startled squeak as he walked out the door. Beel followed after him, more quiet than usual, which was a sign that he was angry about what happened, too. But now at least he knew everything was going to be okay, because he had his human in his arms, and nobody was going to even dare to try and touch her with him around. Rumors spread like wildfire in the Devildom, so no doubt half the place already knew about what Mammon had done to that stupid bitchy demon who threatened MC.