I Like To Think Atsushi Definitely Still Has Cat-like Behaviour When He’s In Human Form.

Late night thought about Atsushi. If the orphanage didn't mistreat and starve him, would he have been as muscular as a tiger? Would he also have more tiger instincts and have a stronger connection to Byakko?

fic where dazai (and ranpo but he's ranpo) notices that anytime someone says words like "beast" "monster" "demon" etc atsushi almost always stiffens - not like he's scared but as if he's physically fighting back the urge to respond as he'd been called

featuring atsushi trying to force himself to stop associating himself with the words the people in the orphanage called him

akutagawa should be there to be atsushi's hot emotional support but thats just my opinion btw

i like to think that atsushi has longer nails that are maybe a little sharper than normal when he isn’t transformed. little leftover tiger influence yknow?

Atsushi giving someone in the ADA a dead bird or mouse or something, and they throw it away because, obviously, it's a dead animal what else are they supposed to do with it? and Atsushi is so freaking hurt over it, like yeah his human brain gets it, but his heart is still broken, because that was a present and he worked so hard to give it to them and the rest of the ADA just stares at the person who threw it away like they're absolutely scum for throwing away Atsushi's present as Atsushi tries not to cry in the background.

Tigers that are kept in captive can develop repetitive behaviours to cope with stress and such.

Imagining if because he spent his life in captivity, Atsushi developed his own.

Atsushi paces when he's nervous or upset, even when he's tired or injured he'll pace back and fourth.

Atsushi who used to bite the bars of his cage and now ends up chewing on his fingers and clothes.

Atsushi who keeps his nails sharp, just in case he's caught off guard.

Atsushi who has trouble following his instincts, because of how long he spent trying to suppress and hide them.

It is! The headcanon anon!!! I shall give you four fluffy, somewhat cat!Atsushi headcanons right now to make you smile 💜💜💜 Hopefully these are as cute as I think they are! Regardless of how plausible they may or may not be, though, they do make me smile- Hopefully. They can do that for you, too!

- Much like actual tigers will groom each other and their young, Atsushi will also do this!!! It’s primarily reserved for the baby siblings (IE- Kyōka, Lucy, and Kenji), and it’s done in a more human fashion, but I’ve always imagined that he’ll start idly brushing their hair if it’s messy or it he just doesn’t have anything to do with his hands. He’s surprisingly good at giving them cute hairstyles!!!

- I like to imagine that the ADA has an unspoken rule that you Are Not allowed to move if Atsushi falls asleep on you… Like if someone’s pet falls asleep on your lap, you know?

- He bleps sometimes. I’m sorry, I don’t make the rules. He kitty, he blep.

- Okay so this one might be more funny that fluffy but I feel like the idea of Atsushi chasing a laser pointer is too good to ignore??? Ranpo would absolutely fuck with him using one and it makes me giggle.

Have a nice day, Ray 💜 Make sure to get some rest and sustenance!

Look no I love these and now I'm also stuck thinking about Atsushi being very particular about Dazai's bandages. One starts fraying, they get stained, anything and he's fretting

BUT

he also has the deep urge to bat at them all the time and the struggle is so so real

weretiger

this fic is one of the best things I've ever read https://archiveofourown.org/series/2388478#bookmark-form

I want a bsd au where Atsushi ran away from the orphanage at one point (maybe the tiger took over and ran off or something) and just ended up living in the woods for a while

Cannon eventually catches up with him one way or another and he’s still Atsushi but his feral cat meter is dialed up to ten

Like, he pushes Kunikida’s paperwork off his desk when annoyed

He takes naps whenever he ends up under a sunbeam

He has Matt Murdock super senses

Whenever he decides Akutagawa is being to much of a dick he just, Chomps™️

All that fun stuff

(I also really like the idea of Dazai having to explain things like curse words and sex and drugs the Atsushi ‘grew up in a catholic orphanage and then The Woods™️’ Nakajima)

Dazai makes one suicide joke and Atsushi is like "what's that??" and everyone just freezes all ?????

tigers like to sleep in cool areas but i feel like atsushi wouldn't becuz he'd associate it with the cage (at least at first) vs warm and under the sunlight is more catlike but also distinctively different from the cage

i mean gradually he overcomes it but for now

Makeshift parental figure (byakkos on her way to work