Of Sleep, Humanity, and Tainted Sorrow
Instead Of Sleep Universe (IOSU)
Dazai x F! Reader, Dazai x Chuuya, Dazai x F! Reader x Chuuya
Word Count: 2,696
This is an offshoot of my Bungou Stray Dogs oneshot Instead of sleep, I like to call this the Instead of Sleep Universe. While this could probably be read as a standalone, I would not recommend it. I’ll make sure to link the original. Instead of Sleep
To recap: Reader is a member of the ADA with an ability called Instead of Sleep which allows her hot project her current exhaustion onto someone else and enter their dreamscape, or subconscious. Her ability only works if she is tired beforehand and suffers from extreme insomnia because of this. “Instead of Sleep” ability is loosely based on the Ao3 tag “I wrote this instead of sleeping”
The original ship was just Dazai x Reader, but I’m a greedy indulgent little shit with a love for why choose books so this installment is Dazai and Chuuya with Reader.
This has not been proofed or edited. I am also considering writing a second part.
m.list
The relationship started with just you and Dazai, you thought it was monogamous, you thought it was just the two of you, faithful to each other. So, when you found out you were "the other woman" you were actually heartbroken beyond belief. Not only were you unable to sleep because of your ability, but you were unable to eat, you took up cases left and right and going home to change and stare at your ceiling most nights; sometimes your coworkers would come into the office the next morning to find you in the same position you were in when they left, at your desk doing your work but also nearly everyone else's too.
Every member of the agency tried in their own way to get you to settle, relax, eat at least a little something, or take a small nap. Well, all except for Dazai, he had tried in the beginning but your kept your distance as much as possible. Ranpo would leave snacks or force them into your hand. Yosano would drag you to the infirmary after a laborious case under the guise of a checkup but would make you lay there for a minimum of 30 minutes if you didn't manage to fall asleep for at least some rest. Junichiro and Kenji both trying to brighten your mood with jokes or tales from home. Kyouka would place the stuffed bunny she kept on her desk in your lap if she noticed you were fiddling with your hands more than usual and seemed anxious. Atsushi even guided you to an open section of the office a few times where he arranged the futon kept in the office for just in case scenarios, would force you down, and would turn into Byakko for you to contently sigh and curl into the tiger and at least run your fingers through the fur and let the tension slip from your shoulders and occasionally your eyes droop until you'd fall into a small slumber, that was about as much sleep as you would get. The president on more than one occasion would try to send you home and to not come back until you rested, but you both knew it was fruitless cause.
This carried on until eventually you had passed out from the lack of care your body was receiving on top of falling sick and found yourself in the hospital for a week and a half. When you woke up early in your stay there was Dazai in a chair pulled up next to your bed with his head in his hands and a certain redhead mafia executive leaning in the doorway to your room.
Come to find out, Dazai was bisexual and was interested in a polyamorous relationship and was working up the nerve to tell you about it and his relationship with Chuuya. He knew he never should have entered that relationship with you without you explicitly knowing. And was he ever sorry, seeing your weakened state and how much smaller you looked in that hospital bed amplified that. He stayed away because it's what he thought you wanted, that you were disgusted, never did he think you were going to find yourself sick in the hospital.
And well, Chuuya at the time was indifferent. Sure, the Mackeral should have done a lot different, but he didn't know you as well as he did Dazai. He did know you through Osamu, he knew details about you; hell he kept pestering Dazai to tell you early on so save both of you from the pain; he didn’t know things had gotten this bad. He didn't know you, but he wanted to, especially after he saw your smile and heard your laugh for the first time, even more so when it was over a piece of commentary regarding something dumb his ever so smart partner had just said.
Over time, your relationship with Dazai repaired and grew with Chuuya. Eventually, you found yourself in the best relationship you could ever hope to be in. Sincerely loved by both men and spoiled beyond belief, you didn't think you deserved it but were grateful you did. Most nights you spent in-between the two, curled into Dazai with Chuuya wrapped behind you; in fact most nights you actually got at least a few hours of peaceful sleep - this was the most rested you had been in years.
That's part of why you were worried when a joint mission with the ADA and Port mafia required the once double black to team up for a mission that was going to take anywhere from a few days to a few weeks. Despite the usual efficiency between the two on missions, this was week three without them. You had managed to sleep maybe a collected 8 hours during that time. The three of you called regularly, sometimes it was enough to lull you into a light sleep but it never lasted a full hour. You would try to assure them that, yes you were getting some rest, but both men could hear the exhaustion in your tone as you tried to pretend for their sake.
So, when during one of your calls during a day you had off and you were sniffling and your voice sounded just a bit off, Dazai and Chuuya knew they had to finish this mission and finish it now. Of course they asked what was wrong and if anything happened just to make sure that wasn't the problem and you said you were sure it was just allergies despite it raining, it became clear to them your immune system had taken a hit. Which per past events, a simple cold had the high probability of moving downhill quickly.
You never had a particularly strong immune system, lack of proper rest tends to weaken its defense and ability to recover. By the end of the call you had let the coughs you were trying to hide slip and your voice was rougher than when the conversation started and you sounded absolutely exhausted. Keeping up the facade proved to be hard as the time went on.
This was more than enough to get double black to act quickly and end this. They had more than enough to report and act on. If their new plan went the way it was supposed to they would be back to you by tomorrow morning. By the evening hours the mission was completed, their bags were packed and Dazai and Chuuya were on a train back to Yokohama. Paperwork was done on the journey back and dropped off at its respected location before they made the trip back to mafia executives apartment where all three of you have been living. Dazai had made sure to tell shachou both of you wouldn't be in today or tomorrow, longer depending on how sick you were. Fukuzawa's eyes widened when he heard you were sick and told the brunette to not worry about coming back until you were in peak health, either of you. He knew Dazai was imperative to your recovery, sleep is a powerful medicine and you rarely got any without the detective.
After completing those quick tasks they met each other at the red heads building simultaneously and and hurried up the floors to reach the apartment. Getting ready to put the key into unlock the door both could hear a chesty cough and both looked at each other with wide eyes.
"Honey, we're ho-ome~!" Dazai announced sing songedly.
"Welcome back you two," you replied hoarsely before falling into the fit of coughs and slight wheezes.
Spotting you sat huddled in the corner of the sectional couch wrapped in the largest and fluffiest blanket they owned, Chuuya dropped his bag where he stood and made his way over to you. Watching you try to catch your breath worried him beyond belief as it reminded him of when you first officially met in that hospital room.
Placing his hand your forehead his frown deepened, "Oh lovebug."
Coughing a few more times you replied, "Sorry Chu."
"It's not your fault lovebug, let's get some medicine in you and get you in bed, okay?" Without giving you a choice he tugged you towards him before slipping an arm under your knees and the other on your back and lifting you up blanket and all. Dazai didn't miss the soft smile creeping onto his partners face as you nuzzled into Chuuya, relishing in the affection you've been deprived of the last few weeks. Wordlessly he made his way to the bathroom medicine cabinet and grabbed everything needed before walking into the shared bedroom and setting them down before preparing to change clothes. Osamu knew Chuuya was going to hold you and keep you to himself for a few minutes so you knew he was really there and to assure himself you were safe, so it gave him ample time to get things together. Taking off his typical ensemble and putting on a pair of charcoal sweatpants and pulling the navy t-shirt on just as Chuuya brought you into room, he got his first actual look at how exhausted and sick you looked. You seemed miserable and in more pain than he originally thought, but most importantly, you were so tired. And he knew better than to touch you until medicine has been taken.
That was the next action of business. Get you to take the multitude of medications he procured from the cabinet. He knew you were weak and feeling horrible but you never liked taking things, so often it was a fight. Nonetheless he proceeded to place each pill in a small cup for the pass off. If he so much as brushed your hand he knew you would be asleep almost instantly. And while sleep would help, it wouldn't be enough to get you back to peak health, not without the medicine. In the cup was a few vitamins, a decongestant, a cough reducer and something to hopefully bring your fever down. Currently placed in his pocket was your emergency inhaler left over from when you were able to come home from the hospital from before you had reconciled with him and your other lover.
Seeing the pills in a cup and small glass of water in his partners hand waiting to be handed to you Chuuya took the liberty of sitting on the side of the bed leaving you in his lap. Surprisingly but also unsurprisingly, you gingerly and gratefully took the cups into your slightly shaking hands to take the medicines. At least Dazai had the foresight to start off with the pills rather than any liquids, he knew you hated taking medicine in liquid form.
Noticing a slight bulge in Dazais pants pocket he asked, "Is that the inhaler?"
Glad his partner got the hint he confirmed it was before Chuuya took it upon himself to reach in and take it out while Dazai took the empty cups from your hands, longing to touch you but restraining. After looking at you Chuuya couldn't help but see how much these simple actions took out of you, exhaustion wearing you thin. Even keeping your head up was a struggle. He knew the inhaler could help, anything to help your lungs breathe better and decrease your wheezes. But he also knew you had very little strength left.
"Okay lovebug, we're going to tag team this, you know the drill," After getting the inhaler placed he counted down from 3 and pressed down to release the medicine.
You couldn't hold it in for long, forced to release a painful cough into your lovers chest, "Sorry Chuu," your hoarse voice rang out quietly.
"Bug its okay, you're sick and that was inevitable."
"I know. Just don't want you to get sick."
Coming back into the room after exiting the en suite bathroom Dazai chimed in, "We've got immune systems of steel we'll be fine. And if we're not we'll have the cutest nurse to take care of us."
Too tired to let out even a small laugh you smiled and responded, "yeah, I guess you're right.”
Chuuya went ahead and did a second dose of the inhaler, much like a similar response to before. After taking a coughing fit that had both men concerned for you wellbeing, they looked at each other reading each others minds as to whether or not they should take you to the hospital.
Half lidded, you looked at both of their faces and knew immediately what was on their minds, “I know what you two are thinking, and no, I’m not going to the hospital.”
”But love, you’re really sick, we’re just worried,” Dazai expressed wanting nothing more than to cup your cheek in his hand
”If-,” you began before coughing again, “If I get worse then you can take me. But I really just want to sleep first.”
Both men collectively sighed, in sync with each other after years of partnership. They knew any further arguing would be fruitless, also aware that they would have a hard time saying no to you when you were this sick and they had been away for the last few weeks.
Noticing the silence and your boys downtrodden faces you decided to break the silence, “So how was the mission, any issues? Take names? Kick ass?”
They knew what you were doing, and any other time they would have enlightened your antics, but chuuya could feel some of the fight leave your body as fatigue set in from the exhaustion and unconsciously knowing you were in a safe position. And so he gave you a small response to motivate you for later.
”You know I don’t kick any asses but yours and the shitty fish over here,” he smirked, “But I did kick some other things if you catch my drift.”
Before you had the time to continue your stalling tactic, wanting to spend time with Dazai and Chuuya that you had missed over the last few weeks, the later placed you in the middle of the bed so you would be between the both of you, as you were most nights. Dazai carefully pulled the blankets up so all either man had to do before crawling in to cuddle you from either side was pull their side of the corner back enough. While he did that, Chuuya changed out of his work clothes into a soft pair of pajama pants, and a silly t-shirt you had gotten him early into your relationship that he was too proud to admit out loud that it was his favorite thing in his closet next to his signature hat. After his quick change, the redhead crawled in behind you, not quite around your body like the koala he is just yet- he was waiting for you to settle yourself with Dazai who was turning out lights around the apartment.
Looking at both his lovers waiting for him expectantly, one smiling with a dopey grin, and the other with flushed cheeks and glossy, tired eyes, he couldn’t help but want to relish in the moment but run to both of them for some well deserved rest at the same time. He sauntered over to his side of the bed, gently pulling back the covers and climbing in. Wiggling his eye brows, opening his arms to welcome you, you giggled lightly and rolled your eyes before you inched your way into them. He became inpatient and proceeded to pull you closer against him, not missing the small pout from the man on the other side of your now aware of the gap between the two of you causing the brunette to smirk.
Sighing in contentment at finally having you in his arms, your head to his chest, Dazai smiled down at your face, admiring your beauty even when you were so sick. He waited for Chuuya to settle around you before he expressed ‘love yous’ to both of you. Osamu could tell you were seconds away from sleep as he kissed your forehead, officially activating his ability, as you begun some of the best sleep you swear was the best in your entire life.














