atsushi (like me as a kid tbh) would just absolutely devour books. he fully taught himself to read beyond being taught the alphabet and since then he would be reading books like normal people breathe.
whenever he wasn’t locked in the basement, doing chores or otherwise facing the Horrors™️, he could be found hiding between the shelves in the library.
still, his options of books were pretty limited to whatever the orphanage had stocked or whatever would be donated throughout the years.
so when he joined the agency and had both a house and a stable income, he had the realization that he could read anything now. he could buy books and keep them. he could go to the library and rent whatever he wanted. he could read anything and everything and he was going to do it.
from romance to mystery, graphic novels to textbooks, he wanted to try it. used book stores are his new favorite thing (next to chazuke and napping in the sun with a friend)
/
the agency are semi-aware of this hobby of his, he can be commonly found with a book wherever he is.
they didn’t expect the odd knowledge that would come from it though.
atsushis just soaking up all his book knowledge like a sponge and surprising the others.
/
he bonds with yosano with an interest in medical care, and a lot of the science behind it. she recommends some of her favorite textbooks, journals and papers on the topics and give him some lessons in first aid.
he’s so eager to learn it all and yosano can admit it was nice to have an occasional assistant in her office.
/
ranpo often leaves poes books and manuscripts around the office after he’s read them for others to read and the first time atsushi finds them he’s immediately enamored with them. they certainly didn’t carry murder mysteries at the orphanage and he finds both really interesting and good practice for his continued job as a detective.
the next time poe visits the office he’s almost bowled over by atsushi, eager to talk to him about his stories. they have a great conversation (once poe gets through his flustered stammering) and meet up semi-regularly for more conversations like it.
/
kenji is overjoyed to talk to him about farming books and the techniques discussed and to help him get started with a windowsill garden for his dorm.
/
he just quotes poetry at akutagawa and he definitely doesn’t get flustered by it. (the first time be does he nearly skewers him on the spot out of surprise)
/
idk just atsushi being genuinely smart (like he is) and enjoying the freedom of being outside of the orphanage to take his life in his hands to enjoy what he likes.
also atsushi taking the time to get involved in his friends interests to show some of his appreciation for them (as well as to help find his own interests he was never able to find before)
I like to imagine Joel tripped a little when he got shot so he could fit the theme of all of the Bread Boys Falling
atsushi with more cat/tiger behaviors but some lesser discussed ones:
he scratches all the doorways of the agency building and his dorm. kunikida scolds him for damaging property for over an hour but while he apologizes he’s strangely uncontrite (at least for atsushi who tends to overapologize) about it
/
a mostly nocturnal sleep schedule feels the most natural to him but since his orphanage’s schedule was (quite literally) beaten into him, he regularly wakes up early, though after a long mission or multiple in a row, he tends to sleep through the day instead.
/
when really frustrated (usually during an argument with akutagawa) he has a tendency to stomp his feet. it tends to break the tension, and atsushi finds its super embarrassing. akutagawa finds it cute
/
he’s constantly fighting the urge to sit on his coworkers desks while they’re working and distract them. same with knocking things off their desks.
/
head bunting!!!! he first starts doing it to kyouka after the end of the guild plot. just does it to her one morning while they’re cooking breakfast without realizing. he’s mortified for a moment until kyouka does it back, equally shy yet earnest about it. slowly he catches himself doing it to the rest of the agency: when kenji gives him a hug after a mission, when yosano buys him something he was looking at during a shopping trip, while sharing lunch with the tanizakis, to ranpo after atsushi solves his first mystery on own, to kunikida and dazai after a dangerous mission. he hasn’t worked himself up to doing it to the president yet (and fukuzawas kind of sad about it). dazai and kunikida are the most flustered by it, kenji and kyouka do it back to him the most.
/
as much as he hates being locked up or confined against his will (and he really hates it), he genuinely loves being in small spaces. he sleeps in the closest for kyoukas privacy but he does geniunely feel comfortable there. sometimes he eats lunch under his desk or in the supply room if he’s feeling stressed. dazai did give him a giant box once to see if he’d sit in it and he totally did.
/
he tends to suck on the corners of blankets and things like his shirts or sweaters when he’s asleep or distracted. dazai used to tease him for it until he read that it was often found cats taken to soon from their mothers. he didn’t really find it funny after that
/
he will just Stare at people. agency members look up from their work and will see him looking directly at them. he usually snaps out of it right after and apologizes but just like slow blinks and winks and closing his eyes, he starts doing it more and more as he gets in tune with his ability.
Orange Cat Atsushi
Aka Atsushi is part orange tiger and thus exhibits orange cat behaviours.
Dazai: I know Atsushi I’m sure Kenji will be back soon.
Tiger Atsushi is curled up in a ball on the road and growls sadly.
Dazai: Oh I think I see him.
Tiger Atsushi perks up.
Chuuya: What the hell are you doing out here?!
Dazai: Oh never mind it’s just Chuuya. You know he’s so easy to mistake for a small child.
Chuyya: Why you!
Tiger Atsushi growls sadly.
Dazai: Wow Chuuya I hope you’re happy now you just made Atsushi sad.
Chuuya: I didn’t do shit. What’s wrong with him anyway?
Dazai: Atsushi wants to be carried.
Chuuya: You’re kidding me.
Dazai: Nope and while we could if he was in human form he refuses to turn back. And when I was gonna turn him back he hissed at me.
Chuuya: Oh boo hoo.
Dazai: Exactly, so now we have to wait for Kenji to come back from his case. But he ran into trouble so this is gonna be take a while.
Chuuya: What kind of giant rampaging tiger wants uppies?
Dazai: This one.
Chuuya thinks it over and sighs before looking at Atsushi.
Chuuya: So werebrat you wanna be carried?
Tiger Atsushi nods gravely.
Chuuya shakes his head and then lightly boops him on the nose and activates his ability.
Tiger Atsushi floats up in the air and spins around happily.
Dazai: Oh look you have uses after all.
Chuuya: I’m not doing this for you.
Dazai: Good because asking you for a favour might just kill me.
Chuuya: On that we agree:
Dazai: He looks so happy.
Chuuya: Yeah…why does he keep trying to crash into that building?
Dazai: When it comes to Atsushi one can never truly know.
🤣anyone else hear that ominous bell tolling???🤣🤣🤣no?? just me??????😭😭😭😭😭😭😭
matching profile pictures 😻😻
Fanfic idea - Jealous drunken Chuuya x Drunken cat Atsushi
Prompt: As described Atsushi and Chuuya get drunk and comedy ensues
Actual idea-
So I’m imagining thats its sometime in the future during a cherry blossom viewing.
Everyone is getting drunk and having a great time but cue Atsushi and Chuuya getting drunk.
Turns out a drunken Atsushi acts really silly, like everyone keeps referring to him as a cat and asks him to bring out his tail and ears. Ya know silly stuff but at some point drunken Atsushi just starts acting like complete cat and starts cuddling up to people he likes. You know partially cause he’s drunk and he’s just instinctually scent marking people like an actual cat.
This all comes to a point where he starts cuddling up to Dazai which triggers the next event.
Which is a jealous drunken Chuuya.
You know in my head Chuuya already found Atsushi to be really cute at the beginning of the night before the tiger ears and tail came out.
Atusshi is just adorable and Chuuya immediately wants to get to know him more but denies himself since he doesn’t want Dazai to be an ass about it.
Well a few hours later drunken Chuuya gets jealous that the cute weretiger is cuddling up to Dazai.
Cause ya know Dazai is the worst and in Chuuya’s mind doesn’t deserve to have an adorable creature cuddling up to him and being affectionate.
So in his drunken jealous wisdom Chuuya thinks its a great idea to go over there and just grab Atsushi and say that Dazai doesn’t deserve to have a cute cat before walking back over to the port mafia side while a confused but still drunk Atsushi just kinda shrugs and continues to act like a cat.
Just ya know:
Angry drunken Chuuya (clutching Atsushi like a child would a plush toy): “O-oi this cat is mine now! F-fuck off you Shitty Mackrel!”
Atsushi (who is now slightly confused but unbothered just makes chuffing sounds before cuddling into this new persons neck and nuzzling their cheek like an overly affectionate cat.)
When they start to gain weight, his breasts increase in size too. Their immediate reaction is "Oh!...oh...". At first it's neat but the next second he realizes they'll make him really dysphoric at times. They think "what if I removed them and then regenerated when I felt like it?". And Yosano tells him "Please just bind. Mastectomy every Friday is a little counterproductive".
Also they'd go by all pronouns tbh
what song is he playing
Did I ever tell you about my head cannon that byako is a female tiger because the animators never animated the shef that irl male Tigers have.
So if Atsushi takes on byakos attributes during his partial transformation dose that mean he has a vagina in is weretiger form?
OK, so that's interesting. As far as I'm aware, Byakko doesn’t have a confirmed gender (I've seen people stating that Byakko is female in canon, but I couldn’t find any sources supporting that in canon at all; some people just treat it as such). I’ve also seen people say Atsushi refers to Byakko as male, but I didn’t find proof of that either. So, either the animators and the mangaka overlooked that detail, or they did so on purpose, either to keep the gender ambiguous or to hint that Byakko is actually a female tiger. Either way, your interpretation is totally valid.
If we go with the idea that Byakko is female, then it raises the question of how far Atsushi’s transformation actually goes. Does he take on all of Byakko’s physical attributes—not just the claws, fur, and fangs? If so, it’s possible his anatomy could shift to match hers. But since he’s never shown to fully transform (always keeping some human traits, except in episode 1), it’s hard to say if the transformation would extend that far.
So, I guess the real question is whether Atsushi just turns into any tiger or if he actually pulls from Byakko’s “DNA” and straight-up takes on Byakko’s body. But assuming that is the case... ENBY ATSUSHI!?
Atsushi joining the agency was such a huge win for Kunikida's "Make Dazai A Marginally Functional Human Being" agenda
because before telling Dazai to take care of himself just would not work since Dazai always just played it off with a joke so it went like:
Kunikida: You haven't slept in a week Dazai. Go To Bed or I'll take you there myself.
Dazai: Oh? Kunikida-kunnnn you want to take me to bed with you? how forward~~
but now its :
Kunikida: Dazai, I can't believe that YOU HAVEN'T SLEPT PROPERLY IN THREE DAYS
Dazai: pfft- please i'm fin-
Atsushi overhearing this from the other side of the office: Dazai-san that isn't healthy :(( you should probably sleep :(
Dazai immediately straightening up: you're so right Atsushi I probably should