It's such an underrated little detail that Atsushi, in fact, did not want to join the Agency, because he thought the job was too crazy and violent for him, and he firmly believed every single one of them was nuts (which he's not wrong). Dazai simply manipulated convinced him to join by pointing out the fact that Atsushi didn't really have money or friends. So he was stuck with the weirdos.
Like, he seriously just wants a paycheck and chazuke. Oh sure, he found a family in the ADA, but I'm sure he thinks he's the only sane one there.
Sorry not sorry about this, but I need to see something:
I have a theory about why Chuuya goes by his first name, as opposed to most other people. Because even in the manga, where characters like Fyodor, Nikolai, and Lucy are generally referred to by their surnames, Chuuya goes by his given name in both the manga and anime. *Stormbringer Spoilers*
First of all, when he was fifteen, he likely went by his first name because he was surrounded by friends, by the people who raised him, and going by something like a family name would be distant and unnatural, and likely not something Chuuya would push. So when he met Dazai, he was still immature enough to go only by his given name, and he probably doesn't bother enforcing it when he joined the Mafia either.
But. After the events of Stormbringer and when Chuuya grows up, I suspect it was for a different reason. We don't see much of Chuuya after he escapes the military facility, but since he knew how to speak, my guess would be that he knew enough to know his name, even if he couldn't remember much else. Chuuya was his name, given to him by birth, but the name "Nakahara" isn't. That's N's name, the name of the person who kidnapped him, experimented on him, and tortured him. The real Chuuya's surname was actually Kensuke, and I think something similar applies to him in universe as well. When he was taken by N, the name Nakahara was given to him, but the name Chuuya is the one his real parents gave to him, the name he received when he was born, the name that proves his humanity. So he probably chooses to stick with that name, even though he really could insist on being called "Nakahara" because "Chuuya" is the one that's his.
I love how for the last few chapters, I saw so many posts that were confused, annoyed, bored, and just generally frustrated with the direction the series was taking, claiming that it was getting repetitive, and then this chapter came around and now everyone is like "YES YES THIS IS WHY IT'S MY FAVORITE SERIES THIS IS AMAZING THIS IS A MASTERPIECE I NEVER DOUBTED YOU FOR A SECOND ASAGIRI, YOU LITTLE GENIUS—"
I think we should take more time to appreciate the cruel irony in so many of the bsd backstories, because Asagiri has this way of writing that's not just "oh sad things happened to this character." They're twisted, each in their own special way.
Atsushi: His whole life, he was treated awfully because he had the tiger. And yet, that tiger is what helped him survive that treatment, it's a manifestation of that will to live he grew because of his abuse. It's the source of all his strength and all his pain. The director told him to only hate him, never to hate himself, and yet, all his life, he blamed only himself for his misfortune. The one lesson the director wasn't trying to teach him is what he learned.
Dazai: At the beginning of dark era, Odasaku has one of the healthiest wills to live. And he reaches out to save Dazai from his own darkness, but he can't. But at the end of dark era...it's flipped. Dazai is begging Odasaku to stay, he's reaching out to stop him, he's telling him to find some meaning in life, that things will get better. Mr. "life is meaningless" himself is trying to tell his friend that life has value because he doesn't want him to go. It's right after he told Odasaku how he knows he's destined to lose everything he desires, and then Oda leaves him because he's lost his will to live. And when he dies, he sees himself as a man who failed to become good, to give up killing, yet Dazai sees him as a success story that people can change.
Chuuya: Chuuya's friends betrayed him because they thought he was betraying them by joining the Mafia. And then Chuuya joined the Mafia in order to protect the friends who just betrayed him.
Yosano: She only wanted to save lives. All she wanted was to help people, to heal them, and yet it was that kindness that ended up turning against her. Because by helping them, she also became the source of all their problems and all their pain. She saved their lives so much that all they wanted was to die.
I could go on for longer, but then this post would be very, very long. There's just something about the cruel irony in each of the backstories that make them all feel so tragic.
Dazai, when he's first introduced: Yeah i wanna kms but I don't want to burden anyone.
Dazai, the rest of the series: fails to khs and burdens anything with a pulse.
Hey students, here’s a pro tip: do not write an email to your prof while you’re seriously sick.
Signed, a person who somehow came up with “dear hello, I am sick and not sure if I’ll be alive to come tomorrow and I’m sorry, best slutantions, [name]”.
The only acceptable way for bsd to end is with Atsushi standing over Fyoghurt with a knife, Epic the Musical Vengeance Saga style.
"You can't kill me."
"Exactly!"
*Cues angry stabbing while Dazai holds onto Fyoghurt to stop his ability from taking over Atsushi*
"HOW DOES IT FEEL TO BE HELPLESS-"
So we know that Chuuya complained about his fangs getting stuck, but in the newest chapters, it doesn't seem like he has them in anymore.
Which means that the order of events between the finale and chapter 113 (I believe that’s the number) went like this:
First, they walked back inside the prison, with Dazai still holding the antidote. Chuuya says, “don’t you think you oughta take it by now?”
Dazai shrugs. “I’ve got time.”
Chuuya nods. They make their way more into the prison. “Hey, don’t you think you better—"
“It’s fine,” Dazai assures him. Chuuya frowns.
“You aren’t just waiting until it’s too late, are you?”
No response.
“Dazai? Hey, Dazai, answer me—"
“I think I better go now—"
“TAKE THE STUPID ANTIDOTE—“
“No! I don’t wanna HEY WAIT—" Chuuya jumps onto Dazai sending him sprawling to the floor, and they have a long struggle and frankly ridiculous struggle, which involves Chuuya trying to inject the antidote while Dazai fights him. Eventually, Chuuya manages to restrain Dazai's arms with one hand, and shoves the syringe into Dazai's neck with the other. He’s sweating and panting as he throws it away and lets go of Dazai's hands. Bitter at having been defeated due to his lack of strength that tends to happen when you narrowly escaped death more times than you can count within the past half hour, Dazai comments, “you know, with that expression on your face and those fangs, you really DO look like a vampire.” Which reminds Chuuya of his current predicament. He gets off of Dazai and they seek out a bathroom where Chuuya spends a good deal of time in front of the mirror, trying to get the fangs off without hurting his real teeth. He attempts to google it, but complains about the lack of service and good wifi. Dazai reminds him ever so kindly that it’s a prison, idiot. So they trek all the way up to the first floor and Chuuya stands on the roof, above the wreckage and pile of blood, holding his phone up until google loads and provides him with solutions. They found a way, but in order to get the ingredients required, they’re forced to raid the cafeteria, much to Dazai’s delight. All the required ingredients are eventually collected, but Chuuya spent an extra half hour trying and failing to pull Dazai out of the cafeteria as he scoured places including but not limited to: the fridge, the freezer, every cabinet, all the pantries, and the so called “hidden pantry” where all the sweets were. They finally make it back to the bathroom, where after much bickering and pulling and coaxing, Dazai finally manages to yank off the fangs, causing Chuuya to emit a high pitched sound not unlike a girl’s shriek. Finally, they make it back to the room where Sleeping Beauty is, still quite unconscious.
“I just don’t get it,” says Dazai. He crouched down and stares Sigma thoughtfully. “Why hasn’t he woken up?”
Chuuya frowns. “Do you think it might have to do with the stab wound—?"
“Nah, couldn’t be. Not in this series.”
“Oh, right.” Chuuya examines him again. An idea comes to him. He turns to his partner, his expression perhaps a little too gleeful. “May I…?”
Dazai waves a dismissive hand. “Go for it.”
Which is how we arrive to the state of affairs in chapter 113. Dazai’s no longer self destructing or hungry, Chuuya’s fangs are gone, and Sigma will find himself with a SEVERE back pain when he wakes up.