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Let's Share Our One Brain Cell For Life

Summary:

The ADA celebrate the welcoming of their two new members with booze and party games. Chaos ensues.

Oh, and Dazai proposes.

 

(or, Dazai swore he'd marry Chuuya when they got their lives together and well...)

Notes:

Here it is, another part to my ADA!SKK AU! The story is set right after Dazai and Chuuya join the Agency.

Kudos and comments are always appreciated! ^^

(See the end of the work for more notes.)

Work Text:

Carefree laughter and tipsy conversation filled the air in the Armed Detective Agency office. They were celebrating not only the end of the work week but also the official welcoming of their two new recruits after successfully completing their entrance exams. There was takeout from the new restaurant down the road, an abundance of sweets that was mostly eaten by a single person, and lots of cheap booze.

An hour into their party, everyone was at least a little tipsy, though no one was flat out drunk yet, which was a miracle considering Chuuya couldn't hold his alcohol at all

Obviously, they weren't only going to be eating and getting wasted. Someone had pulled out a huge box of party games, and after some careful consideration, it was decided that the easiest game to play while tipsy would be a card game, which is why they were currently engaged in a heated game of Uno .

"Uno!"

"Think again, motherfucker!"

Chuuya slammed down a Draw 4 card and watched in satisfaction as the light slowly left Kunikida's eyes. 

"Uno," he declared with a sadistic smile.

Kunikida tried to get the upper hand by slamming down a red Skip , but he was forced to concede defeat after receiving another Draw 4 when it came to the other's turn again.

"And that's game!" Yosano announced from her perch at the head of the table. With a hand reached out, palm faced up, she called the sulking blond over. "Kunikida-kun, you know what happens to the loser."

After a good-natured nod to Chuuya for winning the game, he slowly got up and reluctantly handed over his phone, which was then hooked up to the projector that was usually used for briefing missions. The screen darkened as soon as they could see his lock screen.

"Wow, Kunikida-kun!" an annoying voice from down the table piped up in mock awe. "I didn't know you loved your notebook that much to keep it as your lock screen."

Said man was grateful that Chuuya was kind enough to shove a pastry down Dazai's throat for him, otherwise he probably would've shoved his fist down instead.

"Ok, everyone! Kunikida has a max of 137 pictures and videos. Choose a number, please."

"69." The delighted smile on Dazai's face was looking more punchable than usual.

But no matter how much Kunikida wanted to grant the man's wish for death, he couldn't argue against everyone else who found no problem with the choice of number. Some were even giggling.

He let out a deep sigh and went to scroll through his camera roll. Once he reached the 69th one, a screenshot of some fancy office supplies he was considering buying, he gave the 'okay' to Yosano to uncover the screen.

"Eh~? How boring." A vein bulged on Kunikida's forehead. "I wanted to see something scandalous."

"I think it's very normal and Kunikida-like," Ranpo supplied casually, unconsciously calming the blond man's nerves, because yes, what else was there supposed to be? There was no reason for him to take pictures of anything other than the necessary things he wanted to remember for the future, such as office supplies and the occasional group picture.

" Uno was fun, but who's ready for Jenga ?"

 

~

 

"You know Chuuya, for a gravity manipulator, you're pretty bad at Jenga ."

He glared at Dazai from across the table, his hands already curled into fists. 

"You pushed me, shitty Dazai!"

"Did I?"

Before he could launch himself at the man, Yosano was ushering him to hurry up and show them more of the good stuff.

That's right. By the third round in a row of Chuuya losing horribly at the game of pulling out stacked blocks of wood, his gallery had become an ADA favorite. 

With the way that Chuuya was protesting showcasing his gallery the first time, anyone would've guessed that there was something extra saucy on it, but that wasn't the case. After all, it was his personal phone. You know, the one filled to the brim with pictures and videos of him and Dazai.

The first time was actually a very cute video of Dazai being a fucking dork and singing Unchained Melody to Chuuya. The brunette was freshly showered and was serenading Chuuya, who was still lying comfortably in bed, filming the whole thing. There was an occasional bout of laughter from the redhead whenever Dazai exaggerated a note in the eccentric way that only he could, but other than that, it was a straight 4 minutes of Dazai being a lovesick fool and singing to his beloved in his pajamas.

The second time he had to go up, he showed them a candid photo of Dazai walking along the beach at night and playing with a purple sparkler. There was an innocent smile on his face as bright eyes were focused on the dazzling sparks, oblivious to the camera pointing his way and capturing the moment, keeping it forever frozen in time.

The third round blessed the ADA with the softest photo of Dazai sleeping on Chuuya's lap. His face was facing the other's crotch, and his hair was brushed away from his face. What really struck the heartstrings was the edge of the frame, where they could clearly see that one of his hands was tightly holding Chuuya's.

("I didn't know chibi loved me that much. I'm flattered."

" Die. "

"Only if you die with me, my love."

"I hope you die a long, painful death."

"How mean! Chibi knows I hate pain!"

"That's why I said it, dumbass.")

Now it was the fourth time that Chuuya had to show off his gallery, and he prayed that it wouldn't be anything too embarrassing.

"Hold on second."

His wrist was caught by Yosano and he looked up to ask what was wrong, until he saw the predatory glint in her eyes. He paled even before he knew the cause of that fear-inducing look.

"It appears our Chuuya-kun has a hidden album."

His eyes widened before whipping around to see that his phone was already connected and showing off his multiple albums, including the one at the very bottom, right next to his Recently Deleted , marked Hidden .

"Oh no…"

"Oh yes," Yosano said delightfully. "We didn't mention it 'cause none of us has anything... dirty enough to hide to have a hidden album, but now we have to flip a coin to see which one you have to show us."

Chuuya's face was burning up at the way she said the word 'dirty,' and as he was opening his mouth to deny it, Ranpo was speaking up, voice oozing mischief. 

"If you don't have anything to hide, why not just prove it?"

All eyes were on him as he was forced to choose between continuing to deny their claims or admitting that he did, in fact, have nudes in that album. Either way, there was still the chance of him having to show it to them anyway. In a last ditch effort to find some way out of it, his eyes darted to Dazai's, pleading, but all he got was an amused smile as he watched the whole thing unfold with a cup of sake in hand. 

That bastard!

"Fucking fine! Flip the damn coin. If it lands on tails, I'll give up and show you what's in it."

Yosano and Ranpo gave each other a triumphant high-five.

Kunikida was kind enough to do the coin toss at Chuuya's request, for he claimed that he was the most honest out of everyone else, thus he trusted him to be fair. 

The man took a 100-yen coin from his pocket and flipped it up into the air. Once it was close enough, he slapped it on the back of his hand. He slowly lifted his hand, and to Chuuya's horror, staring mockingly back at him, was the 100 that indicated tails.

"God fucking damn it."

The trio that seemed to want Chuuya to suffer tonight were cheering together in their own happy little huddle, while the man himself was glaring daggers at them. It seemed his hateful stare wasn't powerful enough to penetrate their bubble of fun, because soon, they were shouting out random numbers.

The only one in the room that seemed to be on his side was the glasses-wearing blond, who could do nothing but give him an apologetic look. Chuuya brushed him off with a wave.

"15!"

"4!"

"22!"

"Decide on one, or I'm not showing anything. I have 53 in total."

A huddle was formed once again as they seriously discussed what number would be chosen. It was childish, really, to see how they were whispering to each other and glancing back at Chuuya every now and again. It was probably the alcohol.

"After careful consideration-," Chuuya scoffed at the business-like tone from Yosano, "-we have decided on the first saucy image or video you have."

Chuuya shrugged and nonchalantly uncovered the screen when he was ready. 

In the picture, Chuuya was standing in front of a body-length mirror, wearing nothing but black boxer briefs and an oversized t-shirt. It may not have been obvious, but judging by shadows and the conspicuous wet patch on the front of his boxers, he was definitely sporting an erection. The shirt itself didn't cover anything either as the bottom of it was pulled up and held by his teeth, leaving his toned stomach and chest on full display. One hand was holding the camera, while the other was pinching a nipple. 

Dazai’s eyes were gleaming. "Ooh, I remember this one."

"Shut the fuck up,” Chuuya replied with the sweetest smile, one that rivaled the blazing fires of rage in his eyes.

Yosano had her face in her hands, the beginnings of a pout taking form on her lips. “I have to say, I’m quite disappointed. I was expecting a nice ‘ole dick pic.”

“Well, you should have chosen a different number then.” Chuuya began to unplug his phone, and despite how calm he appeared on the outside, he was internally crying in relief. That picture was the cleanest one he had.

“We’ll get you next time.” Ranpo and Dazai nodded along with her.

“Bullies,” the victim of that night’s antics muttered on his way back to his seat.

Contrary to what everyone was hoping for, Chuuya hadn’t lost a single game since then. They had switched on over to other party games that he had played with the competitiveness of an Olympic athlete, all to avoid being the sorry sucker that had to expose their camera roll again. He’d had enough humiliation for one night.

So far, they’d seen pictures of the different sweets Ranpo was interested in and wanted to try, the sexy lingerie Yosano was planning on buying with her next paycheck, and the group picture they’d taken just hours before on Kunikida’s phone.

The only person who hasn’t shown anything was currently up by the projector, connecting his phone with a pout on his face. 

“Sorry,” Chuuya started, leaning back in his chair, looking anything but apologetic, “if you didn’t want to lose, you should’ve tried not being the poorest bitch in the room.”

Dazai stuck his tongue out at him, making his next comment all the less impactful. “Chuuya is being childish. How befitting of your height.”

“What was that? I couldn't hear you over the sound of my sweet victory.”

A glare was thrown at the smug redhead, who was currently being showered by Yosano, Ranpo, and a reluctant Kunikida with the stacks of colorful money he had earned, most of it courtesy of Dazai, who apparently had the worst luck when it came to Monopoly.

“Yeah, yeah. Hurry and choose a number already. I have 406.”

The four decide to give the honor to Kunikida.

“200, just like the number of headaches you’ve given me since you started working here.”

“How sweet of you to keep count, Ku-ni-ki-da-kun~”

The man didn’t explode. No, he was too worn out for that. Instead, he took a long swig straight from the sake bottle.

They left Dazai to find his 200th photo or video, and all was well and good. Casual conversation was being made as Chuuya, Yosano, and Ranpo were sobering up (the first duo from alcohol, Ranpo from his sugar high). Kunikida kept more to himself as he seemed to be going in the opposite direction, opting to just listen in on what was being talked about.

Not long after, a short, “Oh fuck,” was heard from Dazai, and they all turned to see him staring at his phone, his cheeks taking on a light pink blush.

“Found it?” Yosano asked as she got up to uncover the screen. 

“Yosano-sensei, wait-!”

All at once, their eyes were assaulted with a rather explicit view of their redheaded co-worker’s naked body. He was spread out on a bed with two fingers in his ass, while his other hand was occupied with stroking his leaking cock. And to the horror of the person on the screen, it was a video. A 3-minute long video .

Dazai .”

“Chuuya, I swear I didn’t plan this,” he said hurriedly, hands immediately coming up in an attempt to shield himself. Dazai didn’t know what his lover would do to him, especially with that god-like strength of his. He could only imagine, which did nothing for the sudden cold sweat he felt running down his face.

“I’ll make sure to give you a painful death, you shitty bandage waster.”

Before Chuuya could bestow his wrath upon his soon-to-be ex- lover, both his wrists were caught by two different people, Yosano on his left, Ranpo on his right.

“Chuuya-san, I think it’d be best to kill Dazai after we finish watching the video.”

“Excuse me?!”

He was forced to sit down again, his attempt to get back up foiled by the matching sadistic grins on both of them, daring him to move. He may have been used to Yosano’s (in the sense that he was still unnerved by it), but seeing something so sinister on Ranpo’s usually carefree face was something else. It made him shut up and allow himself to be confined to his chair, while his amateur porn video played on the screen.

“Turn up the volume.”

Chuuya looked back at Kunikida, the betrayal clear on his features, but the man was too busy drunkenly straining his eyes to watch the video.

Without meeting his lover’s eyes, Dazai raised the volume just enough to be able to clearly hear the moans and whimpering falling from Chuuya’s lips. If anyone bothered to try, they could also hear the lewd squelching of his fingers pumping in and out of his ass and the rhythmic stroking of his cock.

By the end of the video, porn star Chuuya was chanting Dazai’s name like a mantra and begging him to fuck him already. It finally ended with the camera cutting off abruptly with a low groan of Chuuya’s name from on-screen Dazai.

Silence enveloped the meeting room long after the phone was disconnected, leaving the screen a black void of nothingness and the room’s occupants in an awed stillness.

“...We speak nothing of this,” Chuuya finally spoke. His face and ears were burning in shame (maybe a hint of arousal, too).

Everyone slowly turned to look at him, each person red-faced and wearing a matching expression of something that could have very well led to a gang bang, if they so desired.

Rather than acting on that, though, they all silently nodded. 

In an attempt to bring some normalcy back, which was impossible at that point, they decided to play one last game to end the night. And if everyone was conspiring against Dazai to get him to lose, they weren’t being very subtle about it.

“Never have I ever kissed Chuuya.”

“Never have I ever had sex with Chuuya.”

“Never have I ever joined the ADA with a certain redhead named Chuuya.”

“I’m right here, you know!”

“Chibi, it’s okay.” Dazai stood up from his chair and began walking towards the projector, a sign of him accepting defeat, no matter how underhanded a loss it was. “Your honor was already tarnished. What’s a little more?”

“I’ll quit. I’ll really do it.”

Brushing him off completely, Dazai raised his hand in the air and cheerily asked for their choice of number. A sudden slamming of hands on the table had the people around it jumping out of their skin.

“69,” Kunikida declared with a finality in his tone that would’ve been intimidating, if he wasn’t currently shit-faced and facing the wrong direction.

“Okay! As per Kunikida-kun’s request, we’ll be using the glorious number 69.”

Dazai looked so eager to show off what was on his phone, that the sudden conflicted expression that crossed his face caught the others by surprise. What’s more was that he asked them to choose another number.

“Sorry, everyone, but I absolutely cannot show anyone this one.”

Chuuya, being the bitter person that he was, crossed his arms with a huff and said with as much attitude as he could muster, “Oh, so you have no problem showing them a video of me jacking off, but you have something even worse that you can’t show?”

The redhead was caught off guard by how sheepish Dazai became, rubbing at his neck and everything. “I suppose chibi can say that.”

Dazai asked to get a different number again, so as the self-proclaimed game official, Yosano declared that she must review the content before letting it go. She stumbled to her feet and wobbled on over to Dazai’s side. She leaned over to see his phone screen, and from where everyone else was seated away from them, they had a clear view of how wide her eyes became before giving Dazai a look that said ‘ Are you serious ?’

The man just smiled at her.

“Alright. Dazai gets a pass.”

“Huh?! Why?”

Yosano put a finger to her lips, even throwing a little wink Chuuya’s way. “Secret.”

“But-” He was cut off by a sudden kiss on his lips.

“Nothing for a simple-minded dog like you to worry about.”

“I’m not a fucking dog!”

Dazai gave him a smug smile. “Oh? So you admit that you’re simple-minded?”

The night continued with Chuuya nearly strangling his partner to death, while the others watched in amusement. They had given Dazai a full pass, claiming that they might as well end their fun there and head on home as it was already past 2 in the morning. 

With their arms supporting one another, they walked along the deserted Yokohama streets together, stumbling here and there, and only parting when they had to go to their respective dorm rooms.

Four out of five of them would wake up with killer hangovers that had them sleeping past noon and chugging down pain killers the second they woke up. None of them would regret the copious amount of alcohol drunken to get to that point though. No, they were just glad it wasn’t a work day. 

 

~

 

The following week went by as normal. Breaking Dazai and Chuuya into the ADA work routine was easy enough, and they melded in well with the rest of the office. It was as though they’ve always been there, and it was a nice feeling for the two who worried if they were going to do this whole ‘life in the light’ thing right. So far, they’d say they were doing pretty good.

By Friday that same week, Dazai and Chuuya found themselves winding down in their shared room after a hard day's worth of work. Well, Chuuya did work, Dazai just cheered everyone on while taking too many breaks than he was allowed.

Chuuya was already bundled up in the sheets, just barely hanging on to the edge of wakefulness as he waited for Dazai to finish washing up. He blinked bleary eyes up at the brunet when he felt a dip in the mattress and fingers in his hair, gently brushing them behind his ear.

“Mm… Took you long enough.”

Dazai didn’t say anything, just kept running slim fingers through fiery locks, keeping the pace nice and slow. Pretty soon, the redhead’s eyes were closing again, the soothing brushes lulling him to sleep. 

Chuuya sluggishly reached his left hand out, and Dazai got the que to lace his fingers with his. It‘s always been a habit of theirs to sleep like that, holding hands, ever since that night in the motel. They never really discussed it with each other; it was one of those things that just happened. But hey, none of them were complaining, so why stop?

“Hey, Chuuya,” Dazai softly called out to him. 

A hum and a squeezing on his hand told him that he was listening. Dazai couldn’t help the affectionate smile that crept up on his face as he paused to watch his lover for a moment. 

Chuuya was a short-tempered little fireball of emotions that could easily kick someone many times his size’s ass. But he was also one of the kindest people Dazai’s ever known, right up there with Odasaku (which was a feat in itself), even if he didn’t like to explicitly show it. He was probably also the only person in the world who would willingly put up with his shit and wouldn’t care about all the terrible things he’d done in the past. 

They’ve seen each other at their worst, and in spite of everything, they still stayed when the other was feeling completely lost and empty and broken . They were each other’s pillar of support, the one to keep the other from breaking forever, and even when one of them couldn’t take it anymore and needed to let go , the other was always there to be the one to ground them again. They broke together, and they would recover together, too. 

Hopefully, their new life with the Agency would warrant more of building a better life together than anything. That’s why they left behind their past lives, after all. As far as Dazai could tell, they were on the right track.

There was just one more thing that had to be done, which was more of a formality, if you will. But, Dazai figured Chuuya deserved as much. He deserved the world, really, but right now, this was all he could offer to the man he loved. 

The man he wanted to spend the rest of his life with.

“Let’s get married.”

The phrase alone sent a wave of nostalgia to him, and from the familiar way Chuuya snorted and waved him off, he knew he remembered, too.

“You told me to take you on a date first, so I took chibi to Aomori.”

“Thought that was after the wedding?”

“Then consider it our honeymoon.”

Chuuya was tired.

“You’ve got the order messed up, stupid.” Yet he couldn’t help the sleepy smile on his face.

“Then we’ll just go on another honeymoon.” Dazai sighed in that exasperated way that made the person on the receiving end seem stupid. “Geez, slug. You can be pretty dense.”

“Fuckin’ smartass mackerel,” he grumbled as he pinched the other’s thigh. Dazai yelped and whined at the pain, until he let go. “Why would we go on a honeymoon when we haven’t tied the knot yet?”

“That’s why I said, ‘Let’s get married!’ ” Dazai pouted, his free hand rubbing the sore skin where he was brutally attacked.

Chuuya sighed, snuggling closer to the other’s thigh. He pressed a kiss to the spot as an apology, before pressing his cheek against it.

“Buy me a ring first.”

“I did.” He couldn’t see his expression, but Dazai’s voice had almost sounded fond .

“Like I said back then, I’ll believe it when I see it.”

His lover went silent again, and just when he thought the subject would be dropped for the night, his hand was being untangled, so that it was being cradled in Dazai’s. He thought nothing of it, until he felt a cold object slip onto his ring finger.

Chuuya refused to fall for this trick again.

“What is it this time? A ring from a gacha machine?” 

Instead of a smart retort or another joke, Chuuya got a tender kiss on the back of his hand, reminiscent of the exact same thing he had done before.

“I really love you, you know?”

Chuuya's heart stopped for a second, the genuine love and affection in Dazai’s voice nearly overwhelming him. He forced himself to open his eyes, and his heart soared at the pure, loving look Dazai was giving him. What really choked him up, though, was the sight of a silver band around his finger that looked too real to be fake.

“Dazai-” He was cut off with a light kiss on his lips.

“I know my Chuuya is actually a hopeless romantic at heart, so I even chose a day that’s somewhat important to both of us.”

Chuuya’s eyebrows scrunched up for a second, confused about what was so special about-

His eyes widened at the realization. He’s been so busy that he completely forgot about the date, not that it was that important, but still.

Today was the day they defected together.

His eyes darted from Dazai to their hands, only to choke up again when he noticed the matching ring on his lover’s finger. Chuuya was trying so fucking hard not to cry, so much so that he wasn’t saying anything. He couldn’t.  

Chuuya knew this was going to happen at some point. Hell, Dazai had proposed before, but this was different. It wasn’t a peach gummy. It was an honest to god ring .

“You’re an idiot,” he finally said with a sniffle, eyes refusing to meet the latter’s.

“Can I be your idiot for life?” Dazai tried again, a hopeful lilt in his voice, as if he thought the redhead wasn’t going to say yes anyway. 

Chuuya really couldn’t help it then when the first tear slipped past his eye and immediately wiped it away.

“Yes,” he said so softly, Dazai almost didn’t hear him. 

Even though the word had rung so loudly in his ears, he still had to be an irritating tease and ask, with a hand cupped to his ear, “What was that?” 

Chuuya glared at him with his pretty, misty blue eyes. “ Yes , you stupid fuck. I’ll take one for the team and marry you.”

And when Dazai tackled him to the bed to kiss the life out of him, that’s when Chuuya finally started crying. Dazai had to momentarily stop his quest of conquering Chuuya’s mouth to kiss his tears away, making the redhead laugh and push him away with little to no effort when the kisses began to tickle.

Dazai was on top of him, caging him with his arms, both of them breathing heavily. Russet brown was staring into ocean blue when he proudly told him, “I love you.”

A hand reached up to cup his face, thumb going to gently brush his cheek. “I would hope so, considering you just proposed.”

“Chuuya~” Dazai let himself fall directly onto Chuuya, then buried his face in his neck. “I’m trying to profess my undying love and affection here.”

“I know.” It  was said so fondly, it was honestly too much for Dazai’s poor heart to take. Without warning, he captured Chuuya’s lips again and didn’t let up until a hand was finding a home in his hair.

“I love you,” Chuuya breathed against his lips.

A cheeky smile was on Dazai’s face as he threw the other’s words right back at him. “I would hope so, considering we just got engaged.”

That one earned him a hard shove to the shoulder, but he also got to kiss those irresistible lips again when he was forcefully pulled back down. 

A hand was sneakily snaking up Dazai’s shirt, and he moaned when a particularly hard tug at his hair had his head tilting back, breaking the kiss. Chuuya’s mouth began to mouth up the column of his neck, and hot desire traveled straight to his cock with the next words that were whispered, slow and sensual , in his ear.

“Hurry up and fuck me, my shitty fiancè .”

Dazai had never undressed the two of them that fast in his life.

 

~

 

Chuuya would eventually find out about it later, but what he didn't know yet was that the picture Dazai refused to show was of the both of them from last year. The redhead was peacefully asleep, curled up in all the sheets and hugging Dazai's pillow to his chest. From that angle, a peach gummy could easily be seen on his ring finger. Dazai was sitting on the other side of the pillow, smiling brightly and leaning in close so he could fit in the shot properly. While one hand was holding up the camera, the other had a black velvet box resting in his palm, open and putting the silver ring inside on full display.

Notes:

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