a crab man

(A WIP of my own mc *a siren mc* and the om! boys. I need more ideas for this concept tbh)

Third-born brother, Avatar of Envy, Leviathan.

Outside of schooling and meals, Leviathan typically spent his time in his bedroom. He'd play games, or watch anime, or do anything a typical otaku would do. He'd settle in right by his aquarium, listening to the sounds of the water if he didn't have something else to enjoy. This was how he spent his days.

Though, today, something was off. 

There in his aquarium, a creature stood out to him amongst the fish. A long, white and orange fishtail with green fins. That's unusual. Did someone find him a new fish? Henry couldn't have grown into that in the span of one school day, so.. what is that? 

Leviathan stared at the creature that had its back turned. He found it odd, not only did it have the long tail which resembled a koi fish, but it seemed to have a lot of reddish brown… hair? Was that hair?? 

The creature seemed to be running a hand under, of all things, Henry. The goldfish seemed just fine, in fact he wasn't at all scared. He seemed playful, in fact.

The goldfish swam around, even playing through the long creature's hair, before turning Leviathan's way. Within a moment, the creature, too, turned.

Leviathan let out a small gasp.

It almost looked human.

Brown hair and even eyebrows, plump lips and a button nose. Though, it's red eyes looked a little odd. The spot where one's eyes would be white was, instead, black. It also had scale patches of varying colors all over it's skin.

At the sight of Leviathan, the creature suddenly dashed, hiding itself somewhere where it wouldn't be visible. Leviathan stood in disbelief. He looked down and crossed his arms, letting out a sigh. 

"Now what is that? And who put it in my tank?"

Shrugging, Leviathan settled into his chair and decided to worry about things later. 

About an hour passed when a knock at the door distracted Levi from his game.

He looked up and tugged off one headphone with eyes that could kill.

"Levi." 

The eldest brother, Avatar of Pride, Lucifer. He stood in the doorway with brows arched upward. 

"Have you seen Kiyoshi?"

Levi sighed and leaned back in his chair.

"Was I supposed to go see him?"

"No, but we can't find him anywhere. Asmodeus had gone to his room to ask for something and he wasn't there. I haven't seen anything and he's not picking up his d.d.d." 

"Try again." Levi said, looking back to his computer. 

Lucifer shook his head, but hey, worth a shot. He pulled up Kiyoshi's contact information and hit 'call.'

…..

and his ringtone could be heard.

"So he is in here. Leviathan, why are you lying to me?"

Levi looked over, staring at a wall. "... what?" He looked down. ".. I thought that sound was.. that explains why I kept hearing music.." 

"Where is he?"

".. I don't.. know..?" Levi said, taking his headphones off. He stood from his chair and walked around, before finding the ringing device under a set of neatly folded pajamas. 

Kiyoshi's. 

"Wait, what?" 

Leviathan stared at the pajama set with huge eyes. 

Lucifer, on the other hand, was fuming. 

"I don't understand. I thought you two had been getting along."

"But we have.."

"If anything serious has happened, Lord Diavolo will not be pleased." 

"Lucifer, I'm serious." Levi said with a raised voice. "I don't know why his stuff is in here." 

Off in a corner of the aquarium, the creature Leviathan had seen sat under a good camouflage, watching everything unfold. 

Shit. 

Shit shit shit.

This was not good. 

How could he get out now? And especially that the brothers will question things when he is able to get out.

Why didn't his alarm go off? One hour, that's all. Yet, now he sat having to conceal himself from the two demons in the room.

This is really bad.

".. By the way," Leviathan said, glancing over to his tank. "Who got me a new fish?"

Lucifer huffed. "I don't understand how that could possibly be important right now."

"No, seriously. It's the most unique thing I've ever seen. Who got the new fish??"

With a sigh, Lucifer pinched the bridge of his nose. "Levi. This isn't important."

"No, look!"

Unlucky for the hiding creature, the last few inches of it's fin and tail stuck out enough to be visible.

With a groan, Lucifer glanced over. 

… huh. That's definitely odd. 

He stepped closer to the tank, taking a closer look. "Now that you mention it, that does look unique." He said. ".. though we truly shouldn't be looking at this right now. Levi-"

"Do you know who got it?"

".. no. I don't."

Levi humphed, pulling out his D.D.D. He pulled up the groupchat with his brothers.

Leviathan: who put the new fish in my tank?

Mammon: the hell are ya talkin about? What new fish?? 

Mammon: Also is Key in your room???

Levithan: uh no. his stuff is though. super weird, idk lol

Asmodeus: His stuff is in there? Why?

Leviathan: k look idk. dont ask me ask him

Mammon: HOW ARE WE SUPPOSED TO???

Belphegor: he's not in the attic.

Leviathan: ok seriously who got the fish. 

Leviathan: satan???

Satan: No, I haven't purchased any fish for anything.

Asmodeus: what fish?

Beelzebub: that sounds good

Leviathan: not cooking it. 

Leviathan: it's like a koi fish but really big. and it looks a lot like a person too. but the whites of its eyes are black

Satan: What? Wait, I'm coming there. I want to see. 

Lucifer: We should focus on finding Kiyoshi.

Only a few minutes went by when Satan appeared.

"Levi, I want to see this fish." He said, walking up to the aquarium.

Leviathan shrugged. "It's not in the same place anymore. I can't see it." He said, tilting his head. "What suddenly got you interested anyway?"

"I don't know how, but I think you may have a siren in your tank."

… Levi paused. "Huh???" 

"I'm dead serious." Satan walked up to the tank, glancing around the area. ".. I want to see it." 

"I told you I don't see the-" 

The sudden flash of white and orange caught them both by surprise. 

The creature still tried to hide, but Satan caught a glimpse of the face. 

".. definitely. The black sclera is a token sign." He turned to Levi. "How did you get it?"

A picnic date with Beel!

(Thank you for the idea! I thought this was an absolutely adorable concept 😊 enjoy!)

“So, what do you say?” 

The voice of the tall demon hit your ears as you looked up from your desk. 

“A picnic?” 

Beelzebub nodded. 

You smile, standing from your chair. “I’d love to.” 

That’s what Beel had asked the other day. Naturally he asked in advance, given he would need time to get things ready and he wanted to make sure you were down before he even started. 

You’d heard from Belphegor that Beel was up all night—poor Belphie—specifically to make sure everything would be perfect, even going so far as to ask Barbatos for help on cooking.

As you got yourself ready to go, you grabbed a pair of hiking boots that Asmodeus had bought, so naturally they were very cute in style. A pair of stretchy jeans for ease of movement, and a warm sweater given the cold temperatures for this time of year. A sweater would be enough, it was still early autumn after all.

.. maybe a scarf, just for good measure.

With that all well and good, you took a small bag with a water bottle, mostly because Beelzebub had mentioned a hike prior to eating. You also made sure your D.D.D. was in your bag, put on silent. 

With everything together, you walked out into the main hall to see Beelzebub. His hair looked a little nicer than usual, and he wore a similar pair of hiking boots to your own. You couldn’t help but wonder if Asmodeus helped him get ready. 

Beel glanced over and waved. “Ready?”

“Yep.” You said with a grin. 

Beelzebub made sure to let Lucifer know that you two were leaving—we don’t need him worrying when you weren’t present for dinner—and with that, you were off.

He took you on a small walk down a shopping street, pointing out some of his favorite restaurants in the area, even suggesting you stop at one for a quick bite.

“Aren’t we going to eat later?” You asked.

“Yea.. but this place has really good dessert.” 

You laughed softly, grabbing his hand and entwining your fingers together. “We can have some after, okay?”

Beel glanced away, though you saw the red on his cheeks. “Kay..” 

The shopping street was decorated in lights from shop to shop across the street, all of different colors in different areas, and the many aromas that hit your nose made your mouth water. The scent of fried foods, grilled foods, and baked goods too. You.. really should have brought a snack for the walk. 

“.. Okay.” You said, glancing to another shop nearby. “Maybe.. We can have a little something.”

Beelzebub perked up, suddenly dragging you over to none other than Madam Scream’s. 

You found his eagerness as he ordered really, really cute. 

Of course, you also had to make sure he didn’t order an entire meal. Knowing Beel, he’d order the whole restaurant if he isn’t stopped. 

With a bit of haggling with him the two of you were able to settle on a box of macarons. There were only five, and you couldn’t help but wonder if you should just give him the extra or cut it in half.

As you and Beel sat on a bench nearby to snack, he held up a macaron to your mouth.

“Take a bite.” He said. 

With a raised brow, you took a small bite. Before you pulled away, Beel leaned in close. 

He sunk his teeth into the other half, grinning like an idiot as he did. 

Your face suddenly felt really warm.

He bit off half of the macaron in practically one bite, sitting up and watching as other people passed by. 

“Dork..” You mumbled as you playfully punched his arm. 

With the snack done, Beelzebub took your hand and led you down the rest of the street, almost not giving you a chance to throw away the trash. 

A hop, skip, and a jump later the two of you approached a large mountain, standing right at the entrance to a hiking trail. 

“It’s not as long as it looks.” Beelzebub said, noticing your wide eyes as you stared up at the huge formation. “.. Besides, we’re not going all the way to the top anyway.” He shuffled. “Another day, maybe. I don’t think I could walk all that way without eating something.” 

You laughed. “Don’t eat the trees, please.” 

Beel looked away, though a smile tugged at his lips.

He took your hand once more, giving your palm a quick squeeze before you started down the trail. Even though there weren’t too many people around, Beelzebub made sure you stayed very close to him. He even wrapped an arm around you at one point, and with his huge stature his arm almost wrapped around you entirely. That did make it a little hard to walk, but you didn’t mind. 

The further down you went, the quieter it became. Most of the sounds you heard came from the forest around the trail. An animal, or maybe the wind dashing through the trees. 

One would think this would be terrifying, but for whatever reason you didn’t feel any fear or stress. In fact, you found it quite beautiful.

As you walked, your eyes glanced at the large pine trees surrounding you, the flowers and foliage lining the untouched areas of the ground. 

A few small bugs would appear every now and then, and you even spotted one somewhat resembling a ladybug. 

To think, even a place where demons roamed could be beautiful like this… then again, demons weren’t so bad. At least, not the ones you knew.

“Oh!” You exclaimed, quickly pulling out your phone. 

Beelzebub glanced over, looking around for a moment before settling back on you as he realized no one else was around.

You quickly snapped a photo of the sunset through the trees, overlooking the devildom. From here, you could see the academy as well as the castle, and the whole surrounding area. The mix of colors that the sky made during sunset and the visible light shining through the trees made for a breathtaking view.

Even Beel had stopped for a moment to take it in. 

“Isn’t it great?” You said, taking the chance to lean on the demon. He didn’t seem to notice, but his arm slipped under yours, snaking around your waist. You leaned more on him, and he made sure to keep you upright. 

Beelzebub glanced down. 

“.. we’re almost there, you know.” He said.

You nodded, looking up at him. “You’re starving, aren’t you?” You can’t help but laugh as he nodded.

Beelzebub keeps his head turned for a moment. He then turns to face you. 

His cheeks had gone red. 

“Beel?” 

He closed his eyes, leaning in very close. 

The soft press of his lips sent a jolt through your entire body, His arm, still around your waist, tightens just a bit as he makes sure you’re right up against him. 

He was so.. Warm. You didn’t know how else to react. Your once open eyes had closed, and now you stood there in silence as Beelzebub just wouldn’t let go. 

For a moment you even felt his tongue brush against your lips, but he stopped right there and pulled his mouth away. 

He wrapped his other arm around you, holding you for a moment. 

With a small smile, you buried your face into him.

Unfortunately, he did have to let go of you. 

Beelzebub let out a small huff, taking your hand for the fiftieth time as he led you down a smaller, less traveled down path. 

He pushed a few tree branches out of the way, letting you take the first step onto a plateau, the edge of a portion of the mountain. 

From here you could see even more of the devildom. 

The sun had almost set by now, leaving only moonlight and stars to illuminate. Luckily, being right on the edge, the trees didn’t block that light. Even so, Beelzebub walked up to a blanket with a picnic basket that had been set out already. 

He reached into one side of the basket and pulled out a few candles, setting them in holders placed around the blanket.

Wow.

Watching as he lit the candles, though he had to do one more than once, a warm feeling rose in your chest. 

You walked over, taking a seat on the blanket and watching Beelzebub light the last candle. 

He put a hand on his hip, looking up at you. 

“Well..” He said. He took the spot next to you, crossing his legs and glancing at you once before opening the basket. He reached in and pulled out a handful of small sandwiches, and while they weren’t the prettiest food you’ve ever seen they still looked great. 

He then pulled out a pack of strawberries, some kind of potato salad looking dish (with some definite differences to the human world variant), some bottled lemonade, and a small cake decorated with fruits.

He glanced down, looking a bit worried. 

“I know it’s not all super fancy.. I tried to make it all nice, but I’m not really the greatest cook.” Beelzebub said, putting his hands in his lap. 

“Barbatos had to show me how to do some of this stuff. He made the cake, actually. I had trouble keeping myself out of the fruit so he locked me out of the kitchen while he made it.” He sighed. “.. I’m sorry it isn’t the best.”

He wasn’t at all sure if you’d like this. In fact, he guessed you wouldn’t.

But you.. You had stars in your eyes. 

He made this all himself. Well, with help, but he still put in a lot of work. 

“Beel..” You say softly, suddenly tackling him onto his back. 

Sat atop him, you leaned down and kissed Beelzebub. 

He made a small sound, staring at you. 

“You don’t hate it?” He asked.

“Beel, all of this just for me?” You said, laughing. “Wh- even the sandwiches.. They’re shaped like hearts. You..” 

He blushed, looking off toward the city. 

“You dumb dumb.. I love it.” 

Beelzebub almost didn’t believe you for a moment. But as he watched you take a bit of a sandwich and smile at him, he felt comforted.

You moved back to the spot you were sitting, munching happily on your sandwich and soon, Beel got himself back up too.

He grabbed two sandwiches, scarfing one down pretty fast. Though, he tried to go slower on the second. 

You gave him one extra, as you wanted to save room for the cake, and you knew he would have plenty regardless of what he ate. 

Were they super pretty looking? No. But you were lying if you said they didn’t taste great. 

“Mm.” You mumbled, looking to Beelzebub with a smile. 

With a hum, you climbed into his lap and grabbed a strawberry, eating happily while Beel just stared.

“Hm.” Beel muttered, using a fork to grab a bite of cake. He held the fork up to your mouth, letting you take the very first bite.

“Mmm!” You hummed, deciding to grab the fork from his hands to take another bite. Instead of eating more, Beel just watched. 

He wrapped his arms around your waist, pressing his face into the curve of your neck and shoulder and staying there.

“Beel.” You said, ruffling his orange hair. “You should eat some cake too. I can’t eat it all myself.”

“Mm..” 

You watch, taking a hefty chunk onto the fork to hold up for the demon. 

He lifted his head a little, before almost biting the fork in half as he took his bite.

“Careful- don’t eat the silver!” You laughed. 

Beelzebub smiled, closing his eyes as he held onto you. 

This little charade of you feeding him and him feeding you went on until the cake had been reduced to crumbs.

You, to be honest, were stuffed. Three sandwiches, god knows how many strawberries, potato salad, and at least two whole slices of cake were plenty to keep you happy. 

Surprisingly, Beelzebub seemed satisfied too. Was it the food, or the fact he’d been cuddling you in his lap this whole time?

Whatever the answer, you didn’t mind.

You felt content, so much so your eyes felt heavy. 

With a soft exhale, you sunk into Beelzebub’s arms and fell asleep. 

… well, that didn’t last so long. 

You felt a warm breath on your ears, and a low voice called to you. 

“MC… MC!” 

Opening your eyes slowly, you glanced up at Beel. 

“Hmm…?” 

“I didn’t wanna wake you up..” He let out a grumble. “We gotta get home. Lucifer will kill us.”

For a second you didn’t quite understand. Why would Lucifer…?

“Oh shit.” You looked at your phone.

The curfew that the eldest brother had set was fast approaching.

You stood up, just a little too quick for someone that just woke up, but you kept your balance as you helped Beel pack up what needed to be, and ready a bag of trash. 

He put out the candles and grabbed the holders, before looking around.

He clicked his tongue. “Okay..” 

All of a sudden, Beelzebub wrapped an arm around you and practically picked you up. 

“You.. maybe wanna hold onto me. And the basket.” He said. 

That’s when you noticed, his horns were out. 

“Beel?” You mumbled.

“This is the fastest way home. Otherwise we’ll be late.” 

“Beel, wait a sec- I’ve never actually been in the air like thi- whoa!!”

As your feet finally touched solid ground again you could feel the adrenaline still pumping through your body.

Beel leaned over, huffing and puffing as he tried to catch his breath. 

“Go.. go on in.. I’ll be there in a minute..” He mumbled.

With a nod, you hurried in only to see Lucifer standing at the top of the stairwell. 

He looked down at you, arms crossed, though surprisingly his expression wasn’t incredibly pissed.

“Welcome back.” Lucifer said.

Beelzebub walked in, looking up at Lucifer. 

“We’re home.. On time.” He said.

Lucifer smiled softly.

“I trust you two didn’t get up to any trouble.” 

So.. imagine a werewolf mc.