I need a big boy... or two (Lord Diavolo x MC x Beelzebub)
Warning and background info: reader is AFAB, 18+, porn with some plot, cunilingus, nipple play, making out, teasing, insecurities, this is my FIRST smut fic
It’s been two years since you first came to Devildom. After your first semester and you spent spring break with Solomon in the Human World, everyone missed having you around even though you’d only been gone for a week convincing Lord Diavolo to ask if you wanted to stay in Devildom permanently instead of leaving back to the Human World in two months, which you said yes almost instantly. Everyone was happy to know that you were staying and they didn’t have to worry about you possibly not coming back. Especially two people in particular.
You talked to Diavolo about school customs and how May, June, and July were usually months where you were let out of school to have fun, hang out with friends, and sometimes party, but there was also summer school for anyone that wasn’t meeting expectations and would need to catch up if needed or wanted. Diavolo thought it would be a good idea to at least try and see how the method worked and frankly it worked surprisingly well in the first year. Lucifer enrolled Mammon in summer school and he was able to make up two years of school work in two months and still have a month free, a ton of students were able to get more attentive one on one help from their teachers allowing them not only to catch up, but also help the teachers understand the best method of teaching, and because it was unknown how many students would join there was constantly an excessive amount of food leftover, which meant Beelzebub was able to go the school and eat all the leftovers and no one would be mad.
It was currently the middle of June and Devildom was going through a heatwave and you and the boys were scheduled to go to the beach with Lord Diavolo and Barbatos soon. The angels had gone back to the Celestial Realm to cool off and Solomon went to take care of some business in the Human Realm, which everyone was worried about because he said something about a new cake and or cookie recipe. Barbatos had shown up with an SUV and Mammon pulled his car out and you all made decisions about who was going in which car. You already made it known that you’d go in whichever car Beel was going to be in cause you had his snacks, which Dia chipped in and said you can sit between him and Beel in the third row of the SUV, which sounded fine since you were the smallest of everyone and they were the biggest. They both however had other plans in mind.
Dia had been the one to suggest the trip not because he thought it was a good way to cool off, but because you wore some very short shorts and a t-shirt and was hoping going to the beach would allow you to reveal a little more. Imagine how pleased he was to see your sundress so snug, but still flowy that it seemed to get "stuck" every here and there when walking to give everyone certain items they forgot.
Beel had used his sin to his advantage and asked if you could hold his snacks for him after he saw you using a compartment spell except you used it differently than most, where you pull things from your back pocket or bra out of thin air. He had asked if you could start holding onto some snacks for whenever you and him went places together and being the sweet little MC he loves of course you said yes. Today it seemed different because he could've sworn you pulled a snack out from your chest, but it didn't seem like you were wearing a bra the way your chest and dress had moved.
Lucifer, Mammon, and Asmo went in Mammon's car. Mammon telling Lucifer he can drive, but he's going with him and Asmo immediately asking to take the entire backseat, which was fine since the SUV had enough room for everyone else. Barbatos and Satan agreed to sit in the front, while Belphie and Levi sat in the middle row, and you, Dia, and Beel would sit in the back together. Dia had gotten in the back first where he got an "accidental" glance down your sundress revealing you hadn't been wearing a bra. Beel on the other hand was climbing in behind you, which is when he noticed you were either not wearing underwear or they were very minimal as if they might as well not be there. Levi immediately turned on a game with his headphones on and Belphie immediately went to sleep as soon as they got in the car. As you all left the House of Lamentation you didn't notice, but Dia and Beel had watched your chest bounce while driving down the brick road to get to the pavement. They had both glanced over to the other to see if the other had noticed and locked eyes with each other before looking out their windows.
It was going to be a while before they got to the beach and the three of you were making plans when Beel and Dia asked what your plan was. You said either sun bathe or hang out in the water and play games. Dia and Beel glanced at each other for a moment before Dia spoke. "MC do you have anything under that?" "Currently no. I was thinking about putting something on when we got to the beach, but it's too hot for that many clothes right now." After your answer they looked over you to each other again and back at you. "MC were you thinking about possibly not wearing a swimsuit at the beach," Beel asked. "Well yeah, but I wanted to see how the water felt first you know. Besides we'll be the only ones there so I'm not too worried about anyone finding me nude." "You wouldn't be worried about me or the brothers seeing you naked? Or would you be walking around in just swim bottoms?" Dia's question had both his and Beel's mind racing and struggling to calm down. "No, I wouldn't be worried about it," you lied, you were beyond nervous about it, but for some reason Beel and Dia seemed to have an interest. You tried to act natural, but the thought of Dia or Beel finding you naked had you hot and bothered and Beel could smell it. "Are you sure you're not worried about it," Beel asked while grabbing your thigh very gently and then rubbing his hands on them very slowly. Dia followed Beel's lead and pulled down one of your dress straps before pulling down the other bringing his lips close to your ear. "Beelzebub is right. You smell worried about it and it seems like your breast deceives you, MC." Your mind was racing and you didn't know what to say or how to respond physically to their advances. While you were raking your mind for an answer Beel asked another question. "If you think it's so hot. Me and Lord Diavolo wouldn't mind if you took off some clothes to feel more… comfortable, would you like to take the dress off so you can wind down better?"
You didn't know how you got here after Beel's question. Your dress was discarded on the floor of the backseat. You had your back against Dia's chest as he played with your nipples and was kissing you to keep you quiet and Beel was between your legs fingering you while eating you out as if you were either his last meal or his favorite meal. You couldn't tell which because your mind had gotten so cloudy because of how many times he'd made you come with either just his mouth, just his fingers, or both at once. It felt unfair. Dia and Beel had all their clothes on, but you were completely exposed to them. You gently pushed Beel's head away and he immediately stopped what he was doing and tapped Dia and he stopped what he was doing too. "What's wrong," Beel asked in a hushed voice. As you tried to remember what you were going to ask they both began to worry you didn't want this. "I just wanted to know, what did you two want me to do for you?" They both chuckled at your question. "Oh darling MC. We don't want anything from you…" "for now," Beel added. "All we want right now is to pleasure you,” Dia finished. “Me and Beelzebub will however be switching spots now because I’ve been interested in finding out how you taste for a while now.” After Dia finished his sentence he and Beel gently moved you to switch positions. “MC,” Levi said very suddenly, but not taking his eyes away from his game. “Y-yeah Levi. What’s up?” “Could you give me my snack?” “Sure,” you pointed to Beel and mouthed to reach in your dress and he pulled out two Comfort Candies. “Thank you,” Levi said putting his headphones back on and getting back into focus of his game. Once Dia and Beel were sure that his was focused on his game again they continued to move you to switch positions. Dia took position in between you legs and Beel immediately started kissing you before Dia got started. When he licked you he quickly started to eat you out with vigor and struggled to hold in a groan. Even though you had came so many times already you could already start to feel yourself come undone again. It felt as if Dia’s tongue was even longer and stronger than Beel’s. Beel pushed his tongue into your mouth and twisted your nipples causing you to squirt on Dia’s face. Dia took his beach towel and wiped his face, while Beel helped slide your dress back on. You were so tired that afterwards you fell asleep on Dia’s shoulder while holding both his and Beel’s hand. Beel pocketed your underwear to save for later. While you slept Beel and Dia came up with ideas for what the three of you could do together at the beach and back at the the Demon Lord’s Castle.