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As Chuuya stood there, on the scale in his bathroom reading the number, he realised that maybe he had been letting himself go after getting access to Mafia money. If Dazai, of all people, could stay small then why can't he? Why can't he have that level of self control. When he first started weighing himself he was 47kg and now he's the heavy weight of 70kg. Clearly he has been eating way too much.
Dazai keeps himself small seemingly effortlessly. Upon letting that fact sink in, Chuuya had another thought.
'Maybe he can show me how' The thought immediately triggered him to start moving. First to his apartments front door, then to the elevator, all the way down to the garage. Before he knows it he's already on his motorbike and on his way to the shipping yard that Dazai resides in.
Chuuya already had a feeling that Kouyou is going to be disappointed in him for going to Dazai instead of her about his issues, but he also felt like she just wouldn't understand in the way that Dazai has always understood him. His innate ability to understand how Chuuya's feeling, often before he registers it, makes him both incredibly infuriating and also incredibly helpful.
As he pulls into the shipping yard he speeds up to get to Dazai's container on the other side of the yard. Rounding corners using his ability is second nature by now. It always help him clear his thoughts by only focusing on his surroundings. Chuuya can always tell when he's approaching Dazai's container. Most people won't be able to tell the specific container apart from the others, but he has been here so many times that it's very obvious which container belongs to Dazai. It's not just the vibe that he gets when he approaches, but the look of it. It seems more beat up than the rest from the many times that Mori has sent Chuuya to get Dazai into the office.
He parks the bike and gets off, moving towards the doors of the container in front of him. Hopefully the asshole is home and not off trying to kill himself again in some obscure way. Knocking on the door of the container makes a loud rumble as the metal shakes.
"Oi, I need to talk to you!" Chuuya yelled as he continued banging on the door.
"What the fuck do you want, Slug. I was sleeping peacefully before I had to hear your grating voice." Dazai stated as he finally opened the door to his container. His only outfit having creases all along it. It was surprising that he didn't smell borderline offensive.
"How do you stay so light?" Chuuya's voice was much quieter now, having realised the moment he opened his mouth that what he was saying was incredibly vulnerable of him. His tunnel vision had make it hard to see until he was already in the situation.
"What the fuckk are you one about?" Dazai drawled.
"Like, skinny. How do you stay so fucking skinny?" The clarification definitely came off as though it was supposed to be obvious what he was asking. To Chuuya, it was obvious what he meant, clearly it was not that way for Dazai's sleep-riddled mind.
Upon realising the actual question, Dazai seems to perk up and his sleepy look was replaced with his signature smirk.
"So you finally realised how fat you've gotten. I wondered how long it would take for the Slug to understand what a pig he's become~" The lilt in his voice obviously trying to rile Chuuya up and make him lash out, but it only succeeds in making him curl in on himself.
"How could I not notice? I've gained over 20kg!" Chuuya's voice was raising, but the desperation bleeding into his voice made it clear that the only anger he felt in this moment was at himself. "I've just been gaining and gaining! I just want to number to drop again!"
Chuuya remembered the one time the number on the scale had dropped and it was after he used Corruption for the first time. Every time after that all Corruption had done was make his weight stagnate for a week or so. He had felt borderline euphoric after realising that the number on his scale had dropped if only a single kilogram.
"Oh… You're really struggling, huh?" Chuuya hadn't even realised that he started zoning out when he heard the response and felt Dazai's fingers brush across his jaw. He couldn't even process that Dazai had come that close while he internally spiralled. His head instinctively jerked to the side at the touch, not used to any kind of soft touch from the boy in front of him.
"Well, if you really want my advise I suppose I could help you out." Dazai starts digging in his pockets for a moment before bringing out a pack of cigarettes. "These help curb my hunger when it starts to get bad."
"That's all?" His eye's widened at the new knowledge he was given.
"Of course not, but if you end up eating too much, just give me a call and I'll help you out" The smirk starting to drive Chuuya insane as he grabbed to box from Dazai's hands.
"Yeah, sure." The walk back to his bike felt like an eternity as his eyes were locked on the box in his hands.
As he mounted the bike again, Dazai shouted to him "I'm gonna need another box by the way! You better get me one for my expertise!" And then he walked back into his container, presumably to go back to sleep.
Chuuya's ride back to his apartment building was filled with swirling thoughts and a heaviness made by the new box of cigarettes in his jacket pocket.
It was a week later when Chuuya finally called Dazai up after eating half of the food he had in his fridge and he sat on his kitchen floor in tears.
"To what do I owe the pleasure of an out of office call, Chuuya?" Is what he was met with when the ringing of the phone in his hand stopped.
"I have no self-control… What do I do now? You told me to call you if this happened." He desperately hoped that Dazai couldn't hear the fact that he had been crying before the call, he'd never hear the end of it.
"I see. I'll be over in a few minutes~ Don't move, ok, Sluggy Wuggy!" And then the telltale click and the hand that held his phone slipped down to the floor. Having to wait for his partner made him feel kind of sick. Obviously he didn't have nearly the same practice Dazai had with not eating, but he would have thought that living on the street would give him an advantage in a way. He lived for years with very limited food, having to share the minimal amount with the rest of the Sheep.
It only took Dazai 15 minutes to show up. The sound of the front doors lock being picked gave him away, being the only sound in the room aside from Chuuya's breathing.
Dazai silently walked in, grabbed Chuuya's hand and immediately took him to his bathroom. Chuuya just stood in the doorway dumbly for a few moments before Dazai shared his big solution.
"Now puke it up." He stated as if it were common knowledge. That it was the only obvious solution.
"I can't just puke on command, asshole!" That prompted Dazai to drag Chuuya up to the toilet and force him onto his knees.
"Here, I'll help you out then." Dazai then pushed Chuuya's head over the toilet before sticking two fingers down Chuuya's throat, prompting a gag.
Chuuya was suddenly puking his whole binge down the toilet. He had a moment of pain as his stomach clenched painfully before he felt blissfully empty. He sat back after he finished dry heaving into the toilet and slowly came back to the current moment.
Dazai was whispering little praises into his ear like "There we are" and "Such a good boy". It made his head spin. Dazai had never been this nice to him. Maybe he should ask Dazai to shove his fingers down his throat more often.
All Chuuya can think as he's held up by Dazai is that he hopes the number on his scale can go down now that he knows how to utilise Dazai's skinny tips.