HC That Even Under Fukuzawa's Ability Atsushi Gets Moody As It Gets Closer To The Full Moon. He Gets

PLZ tell me some chuuatsu headcanons I love collecting themmmmmm

Also I totally agree with everything you said on their dynamic-- I've recently been exposed to way too many new ships (chuuatsu, kunichuu, kunichuuzai... etc etc), and I have fallen in love with chuuatsu and kunichuu bro😭 they have my HEART.

That's so real, BSD ships overall slay the majority of the time. Kunichuu is also a good one! Overall, I need Chuuya to be more in BSD; he needs to meet more people, smh.

But going over to the headcanons I have 👀

They technically don’t argue a lot, but they bicker constantly, specifically when Chuuya’s temper flares up and Atsushi doesn’t back down once he’s pushed too far (although it is more of a playful and sassy fight rather than actual arguments between them). They don’t hold grudges specifically because of that, as it is playful or, in the end, leads to breakthroughs in their own relationship.

They're very much "the opposites attract." Atsushi’s quiet and reflective nature overall often calms Chuuya down, while Chuuya’s boldness pushes Atsushi out of his comfort zone. They’re chaotic together, but it does balance out nicely.

Nicknames. Just nicknames. Chuuya has a horrendous habit of giving Atsushi the worst nicknames ever, and Atsushi pretends to hate it (even whining about it), but he does secretly find it endearing.

Sass everywhere. Sometimes it feels like a sass battle between the two, as Chuuya DOES use sarcastic and sassy remarks, which Atsushi isn’t scared to push back against with his own.

Chuuya wants to treat Atsushi to expensive dinners for dates. It never works. Atsushi’s simplistic nature means that while Chuuya plans for expensive dates, Atsushi always manages to get them to eat something cheap but delicious at the end of the day. The older can’t complain, though, as he does, in the end, enjoy it and even finds it endearing. Not that he’s about to admit it to anybody else.

If they live together, or Atsushi stays over for the night, Chuuya is usually a "morning grump," while Atsushi is always functional in the morning (waking up at 5 a.m. is wild, but at the same time, I get you, Atsushi... I used to have to stand up that early too a few years back). Atsushi loves to tease Chuuya about his bed head and his refusal to even speak before he drinks something.

They actually have tea times. Especially since, after some time, Atsushi developed a habit of brewing tea when Chuuya is stressed, so it became somewhat of a bonding ritual for them.

It’s not often they have missions together, but with the whole PM and ADA alliance still intact, it does happen on very rare occasions. After those missions, Chuuya sometimes drapes his jacket over Atsushi’s shoulders without really saying a word, while the other wordlessly sits beside him, offering a hand for him to hold if Chuuya looks upset.

While Atsushi is still too young to drink for now, he does somewhat pick up on Chuuya’s drinking habits. He doesn’t drink actual alcohol, usually settling on something like a soda or sparkling juice, sitting with Chuuya during his wine-drinking nights just so he can keep him company. Chuuya, in fact, appreciates the gesture a lot more than he’s willing to admit.

Atsushi isn’t stupid. He knows full well about Chuuya’s insecurities, which is why he subtly compliments Chuuya during casual conversations when he can tell Chuuya is feeling down on a particular day.

They both adopted a stray cat. It’s not to Chuuya’s ideals, as he did want a dog, but he will settle on a stray cat, which Atsushi just brings one day into the apartment... It then happens a few more times, so now they have 2–3 stray cats. Chuuya acts annoyed about it, but he does end up spoiling them with fancy treats and cozy beds.

So yeah! That’s them haha.

Kinda wild how Atsushi has suffered throughout his entire life both in and out of the orphanage.

How he was abused and almost killed at least twice during his childhood and was abandoned by his parents.

But than Atsushi has what? Two maybe three good days before the Port Mafia show up. And suddenly people expects him to not be traumatised by his past.

His past he was still experiencing up until 2 weeks ago.

You know everyone else is allowed to have traumatic events that happened years ago and still be traumatised by those events.

Unless you’re Atsushi.

Odasuku died 4 years ago and that’s when Dazai left the Port Mafia.

The Flags died 6 years ago.

But Chuuya, Akutagawa and Dazai are all allowed to still grieve those events in the present.

As they should be because that’s how trauma works.

Atsushi has been abused for 18 years. He was kicked out the orphanage and was homeless for 2 weeks where he was on the brink of death.

He just learned he had an ability and then has to reconcile with how and why he forgot about that.

All alone.

And that’s just the shit Atsushi lets us know about.

But no he needs to get over it apparently.

Just saw a comment that said in that moment Akutugawa realised someone thought he deserved to live.

I’m done.

No because… because Akutugawa like Atsushi has always wanted that kind of approval.

And Atsushi may not have died but even he knew it was all a hunch at that point when he pushed Akutugawa aside.

He saved him.

Used his own words against him because back on the boat Akutugawa decided that Atsushi deserved to live.

And now Atsushi’s decided he should too.

hey don’t cry. trees grow out of the ground.

Concept: While often exaggerated many of Fukuchi’s exploits were made into films.

Over the years he would often send a copy to Fukuzawa so that the two could make fun of them together.

It’s movie night at the Agency and no one can agree on what to watch.

So they grab a random DVD from the pile, one they haven’t seen yet and put it in the TV.

It’s a cheesy action movie and they all get a kick out of the ridiculous one liners from Fukuchi’s actor.

But Atsushi can’t find it in himself to relax. There’s something about this movie that puts him on edge, not that he’s sure of why.

He brushes it aside and keeps watching as Fukuchi’s actor heads into a lab.

A large beast, several of them in fact give chase and Fukuchi valiantly fends them off. The others cheer at his victory but Atsushi goes still.

Because as Fukuchi leaves each and every one of those beasts glow and turn into humans.

And suddenly Atsushi’s not watching the movie. There’s alarms going off overhead. People in lab coats running off to who knows where.

He curls up into a ball inside a nearby bin terrified as the sound of battle gets closer to him.

“Turn it off!”

It’s very rare for Ranpo to get serious so maybe that’s why Dazai instantly turned the TV off without question.

The older detective frowned as he gently took Atsushi’s hands in his.

“You’re safe Atsushi” his voice soft get firm. The light of his glasses catching the younger’s eyes. “I…I’m sorry…I ruined the movie.” Ranpo shook his head “you could never ruin anything.”

But someone had.

Any illusion this was just some work of fiction went away the moment Atsushi recognised it.

And he didn’t even need to look at the others to know that they were all swearing to get to the bottom of this.

Because they were the Armed Detective Agency and no one gets away with hurting their own.

okay since obviously ive gotten to into catifying atsushi i forgot he was a tiger - as u guys pointed out

this is how a beach episode would ACTUALLY play out in my head - kunikida, dazai, and atsushi focus

kunikida: are you not gonna go swimming dazai?

dazai: nope! i think today im just going to relax in the sand! maybe i'll try and drown myself later tho... what about you?

kunikida: im not swimming either

dazai: awww why not

kunikida: for some reason i dont feel safe getting in the ocean w/ u here

dazai, snickering: aww~ how could you say that~ im so hurt

atsushi, in the background, trying to secretly run away:

dazai: aww atsushi-kun why are you sneaking away

atsushi, startled: me? running away? haha... no i wouldn't

kunikida: atsushi, is everything all right? don't tell me you've decided to not participate in a company wide vacation?

atsushi: no! it's not that

dazai: you cant swim? but you fish me out all the time

atsushi: i know how to swim! i just... i don't really like water

dazai: is it becuz you're a cat?

kunikida and atsushi: he's/im a tiger

kunikida: atsushi don't tigers usually like water

atsushi: well... im not really a tiger... it's just my ability

kunikida: is it becuz dazai's here?he is a rather unsafe person to be near when you're also near wtaer

dazai: how cruel~ atsushi-kun i pinky promise i wont drown you~

atsushi:

atsushi, shyly: you really promise?

dazai, who was just joking: ?????????

kunikida, also flabbergasted: ?????????? did you think one of us would-

atsushi: no! i mean obviously not haha... but you promise...?

dazai:

kunikida:

dazai: of course! we promise not to drown you

kunikida: and to get you out of the water if you're in trouble

atsushi: oh... but didn't you not want to swim

kunikida dazai, professional dgaslighters: that never happened

atsushi: ...oh okay... then i think i'll try to swim... you'll be there?

dazai and kunikida: of course

*later*

dazai: atsushi-kun you really...

kunikida: atsushi, please, it's been 7 hours come back out

atsushi, having the time of his life, eyes sparkling, tail wagging: five more minutes!!

kunikida: you said that last time too...

dazai: atsushi-kun sure likes water

kunikida, fixing his glasses: we have to just grab him and run off quickly

dazai: ooh~ kunikida wants to kidnap someone~? how despciable

kunikida: its not kidnapping its for his own good

dazai: if that helps you sleep at night :3

Post (movie) canon Beast Chuuatsu

Everyone in the Port Mafia learns to fear the new Boss.

Chuuya snaps at the slightest of things and where he once treasured his subordinates. He now looks at them now as nothing but tools.

Just another piece on the board for his revenge.

Some whisper that the old boss never left. That Dazai simply took on a new form and rotted the new Boss from the inside out. For where Dazai was ruthless Chuuya is cold and cruel.

The Port Mafia would’ve crumbled the moment he took the throne. The only reason the organisation stays afloat is because Chuuya’s not alone.

Atsushi is a permanent fixture by his side.

He takes on so many responsibilities along with being the main line of security. He overseers each and every sector of the Port Mafia and is the one people then to with issues.

Atsushi’s blood is Mafia through and through but there’s a light in him that shines amongst the darkness. A kindness that makes itself known in private and while his smile is a rare sight.

It is always genuine.

What’s most incredible about him though is that Atsushi is the only one who can calm down the Boss. His hand finds his when Chuuya’s angered, gently running a thumb over his knuckles.

When the Boss is one of his rages, when he’s at the brink of it all and no one dares get near him. There is Atsushi at the door, his smile is worn and his eyes tired.

And he crosses the room and holds the mad man in his arms. Begging for his partner to return, he holds him through the storm and then sends for food and water.

Sometimes you hear Chuuya, quiet and horrified as he begs for his forgiveness. That it won’t happen again, that he’s sorry and he loves him.

But those days become further and further apart.

No one in the Port Mafia dares to bad mouth Atsushi, not that anyone ever could. They hear him cry in the dead of night and feel their hearts break for him.

The White Reaper walks the halls like a ghost waiting for the day death finally reaches him. He will never leave for he’s chained himself to this place.

And the mad king who rules it.

I can’t think about pre-Agency Atsushi without bawling my eyes out.

In every single flashback we see Atsushi scared, berated and abused.

There was not a point in his life where he has ever felt safe or loved and cared about. No one cared if Atsushi lived or died.

No one has shown him a shred of kindness for 18 years.

Atsushi wasn’t allowed to own anything. Nothing has ever belonged to him and the one thing that did they tried to take from him anyway.

And he’s so small…he’s so small and frail and sure all the other kids do but he’s so much smaller than them.

He’s the runt of the litter. The one who gets starved on a regular basis and everyone may hate each other but they all hate him together.

You just see him and he’s practically shaking with fear. He’s yelled at for simply existing. Beaten and told well it doesn’t matter because you’ve had worse.

And he knows he’s had worse.

And it’s all Atsushi’s ever known and by some fucking miracle he still clings to life with both hands.

He’s the living embodiment of resilience, of grit and determination because he grew up full of light in a place of darkness.

Atsushi was raised in hell and it cultivated a strong will but it doesn’t change that he was raised in hell.

Orange Cat Atsushi

Aka Atsushi is part orange tiger instead of white and thus exhibits orange cat behaviours.

Atsushi will eat anything.

Literally anything, it doesn’t matter if it’s food or not. When he’s hungry Atsushi will just munch on whatever is in front of him.

It has led to many, many instances of Kunikida chasing him around the office and demanding he spit something out.

Dazai: Well that’s one report done, what about you Atsushi?

Atsushi: I’m almost done.

Dazai: That’s great I bet we’ll be done in no ti-….0-0?!!!!

At that moment Atsushi picked up his pen lid and put it in his mouth.

Dazai: Hey, why don’t we take a quick break hm? Maybe play a game.

Atsushi: 🤨

Dazai: You drop that pen lid and I’ll take you out for lunch.

Atsushi shakes his head.

Dazai: Really? Not even if it’s some some tea on rice.

Atsushi considers this and spits out the lid before looking at Dazai expectantly.

Dazai, relieved: Well lunch time it is

Kunikida: Dazai you can’t just-

Dazai: He’s eating the pens.

Kunikida:…We have a meeting in another hour, try not to be late.

Dazai: Got it, you coming Atsushi?

Atsushi: Carry me.

Dazai, chuckles: Oh Atsushi, the things I do for you.