this was my idea bc i do dance and maybe some of you do idk enjoy! Btw that pic is the only thing i could find ( i also believe chuuya wouldn't be very 'feminine')

Armed Detective Agency

Atsushi Nakajima:
When you told him that you're a dancer he would be so curious on what you do and can do. He's never experienced something so graceful in his life, he's so proud to be yours and sometimes thinks that you deserve better or be with a stronger guy. If you ask him to do partner with you he'll prob get embarrass saying he can't do it. But you only made him to a fish dive which is he picks you up and hovers you over the floor(yes i think he's strong enough to do it especially if he uses his tiger arms👀). If he wants to see you do a dance he's be embarrassed i ask you because you might think it's a burden and tiring to do it but when he asked you, you accepted quickly and put your pointe shoes on and did the bluebird variation. When he did it he had stars in his eyes and almost teared up  because you were so beautiful.

Dazai Osamu:
He already knew you were a dancer when you decided to be an assistant to the ada. Since dancers don't make much it was unexpected. but your skills were the things that amazed him. he caught you doing some tendús when you were organizing papers for him. When he saw you he jumped on you which scared the living crap out of you. "does my little assistant do perhaps ballet?" Dazai wouldn't be completely clueless on what you do. He's probably seen a ballet on youtube. If you ask him to do partnering he would no doubt accept but of course not without him being dramatic like " does my little ballerina want me to be their prince charming?" He would pick you ab and sit you on his shoulders and you would sit like a swan, like they do of course in swan lake. If he wanted you to dance for him you would do Odettes variation, yes the one with consecutive turns from fifth which you nailed. he would probably record you and show it to Kunikida bragging about how good his s/o is compared to his. If you guys did or attempted to do a dance together you guys would do Odettes variation and prince Siegfried.  He would definitely watch your performances if you had any.

Kunikida Doppo:
He simply wouldn't care whether you did dance or were a circus juggler. but if he catches you in the office or home doing a dance step he would ask you about. " hey.. Y/n do you by any chance do or still do dance?"  he would try to look serious but his shaky voice says otherwise. when you said yes he would straighten up and tell you how cool it is. Kunikida probably wasn't a big dance or ballet fan. But he will no doubt watch you dance. that is one thing he'll scarp his schedule for. He finds it so graceful and it relieves his stress when watching you dance. if you asked him to do partnering he would at first deny it or reject it. If you ask him again he might say yes. if he does he'll pick you up when you do a jete or a sauté de chat (leap). He'll be really stiff tho and he would know where to put his hands because he doesn't want it to be weird or painful for you. If you want to do a variation for him he'll sit on his desk while doing work but also looking at you perform your dance. His favorite variation you do would be giselle, he'd find it so peaceful and beautiful. when you started to do hops on pointe he cringed. Because he thought it was painful. when you finished and bowed he asked you how you do hops en pointe, when you told him you just jump off and on of pointe he was worried and realized how strong you were.

Jun'ichiro Tanizaki:
He had no clue you have or had ballet experience, it was until you two started dating. You were at your guy's house and you started to do an old variation you remembered since you turned on classical music and the song came up. Jun'ichiro was about to ask you what you wanted to eat to see you dancing to the music in the living room. He stealthily sat on the couch to watch you dance. When you finished and bowed at the end of the music he clapped with startled you. you got all embarrassed which he noticed. He started to apologize for watching without your permission and went up to you " yknow you should've told me you did dance. I would've loved to see you dance earlier" You blushed at his word and he did to you hugged him tightly thanking him. at first he was startled when you suddenly did dance steps on instinct but he warmed up to it. If you asked him to partner you he would attempt to pick you up in the air to do a split in place(which is different than a leap/ sauté chat) He asked if he did good, you better say his did or he'll feel like a failure. The variation you did in the beginning was the chinese variation from the Nutcracker on flat ofc because it was kinda unexpected.

Ranpo Edogawa:
Like Kunikida, he could care less. But that doesn't mean he didn't care at all. His curiosity or the best of him and when you started to hum the kite i variation while marking the dance he just abruptly said" Hey Y/n watcha doin'?" you looked over his direction with a light blush from embarrassment. You told him it was a dance from a famous ballet Don Quixote, he had a curious look on him "Ballet? what's that?" you shook your head slowly and showed him the video of Basilio and Kitri dancing. you explained the roles and who Kitri and Basilio was. When you told him Basilio was the hot guy in the small town he said " like me?" you giggles and nodded which gave him like +50 to his ego chart. Instead of you asking he asked you if he could do the variation and partnering with you. You were hesitant but you agreed and taught him the steps from the video. He was able to get the steps decently since he's a 26-ish year old man who had no experience with ballet or basic stretching. He was able to get the counts and occasionally being behind the count. but for his first try it was good.

Port Mafia

Akutagawa Ryūnosuke:
He only knew because you rod Gin about it. Akutagawa seemed like he didn't care, but one day he came home late from work frustrated and angry because none of it coworkers were doing there job correct. when he enter the house slowly thinking you were asleep, he heard loud classical music in the background that he was familiar with. (He prob listens to classical music a lot when working) He saw you with pointe shoes dancing to the song, he was shocked but you didn't see him since you had your eyes closed or at least partially closed. he quietly set his stuff down and hung his jacket on the hanger. He went to the kitchen to grab a drink while admiring you dance. He suddenly coughed which snapped you out of your dance trance. You looked at him wide eyes and said sorry, but you didn't know why you said sorry. He looked at you coldly and just said to continue on. You nodded and continued with you variation. Then you went to fourth position to do a bunch of turns aka the 32 fouettés when you started turning his eyes widened, how were you turning on the little tip tops of you shoe like that. and turning and turning with you leg whipping around at an almost perfect 90 degree angle. When you landed gracefully on your knee( which is what my studio did) you stood am up and bowed to him which made him turn his head to the side to cover his blush. you stood up and walked over to him" so- how was the show?" he looks at you blankly and said" You did... surprisingly.... good." You pouted playfully and said " you know you be my partner."He denied saying he couldn't because of his lungs, anything that can tire him or make him out of breath wouldn't be fun. You told him that Vin Rothbart didn't do that much dancing and instead did more partnering and picking them up. He thought about and accepted in defeat. He instead just used Rashomon because he didn't want to drop you in accident or touch you somewhere you weren't comfortable with. He's still amazed on how you can you 32 turns on those little pointe shoes of yours.

Chuuya  Nakahara:
He prob was Familiar with the art but never invested too much time, thought it was boring. But when you dragged him to the basement with your pointe shoes on, you told him to press the button which he did. you started to do the queen of hearts variation. He recognized the gestures to be the queen of hearts which was hard because you didn't have any partners. but you still nailed it. Chuuya was amazed on how his girl could dance on a little shoe that prob made their feet bleed or at least blister. When you finished he asked if he could do something in it. You nodded and said he could use his ability to partner you when he can't reach you. he agreed and you taught him the roles and what happens in the scene. He was able to get the gist. which ended pretty successfully. you were so happy, your boyfriend is invested in the thing you lived most after him. he would straight up pick you up and you would bend back while his hands were holding you up from the back which was easier because of his ability.

The Guild
John Steinbeck:
He's never heard of ballet, he's not very fond of the classical era, he'd catch you watching the Nutcracker which he did know because the Nutcracker was a huge thing in America when it was Christmas or Holiday time. But the one you were watching was an old recording of your studios nutcracker when you were the Sugar Plum Fairy. "Watcha watching rose?" you looked back at him" My old recording of me when i was the sugar plum fairy in the nutcracker" He had looks sort of impressed, he didn't know what the sugar plain fairy was but when he say the video he was impressed. " say, do you still know it?" You nodded and told him to still do dance from time to time. You put your old pair of shoes in and cleared the path. He turned the video on which you used for music. As you were finishing it up with the Pique turns to the finishing pose you continued to bow while you were panting out of breathe. He clapped and chuckled. " There i saw it, i've never seen something more beautiful and easy look difficult at the same time." he gave you a hug saying that you improved compared to the video 

Mark Twain:
Mark wouldn't know what that is either, he's more of a modern street style dancer if he does dance. Huck probably knows more than the rest. Tom would think it's dumb. You actually just randomly told him, he thought it was cool and want to you show him something as long as you're fine with it. You told him it was fine and you did the Russian dance from the nutcracker. right as the song was playing and you were jumping Mark found it really fun but also amazed, his girlfriend prob jumping like 4 feet off the ground in the splits. As you finished Mark jumped up and ran towards you jumping in you which you two fell on the ground. " yo that was amazing, that's definitely gonna go on my autobiography, how'd you even do that thing where you jump up and touch your toes-" you laughed at him because he was trying to copy what you did which he failed miserably. You tried to teach him, it didn't work. You taught him how to do the basics and get used it. He still makes jokes about how high you can jump and how flexible you are.

Edgar Allan Poe:
You know damn right he'll know a thing or two about it, come on this guys aesthetic is classical victorian era, he's probably seen a ballet or at least know about it. He would turn on ballet music as he writes. You recognized it " Hey babe look at me!" When he looked up you were dancing to the song, gracefully which is surprising since you had heels on. His eyes were wide open, he didn't spend you to perfectly lift you leg or be be in perfect balance in arabesque. You finished ok you knee and he clapped and told you to come sit on his lap as a reward. He hugged you tightly saying he's so honored to have a talented ballerina as his s/o. He asked you what else you knew and you decided to get your old shoes and did a dance. You turned on Cupid Variation from Sleeping Beauty. He wrote helpful notes for you about what could improve from a normal persons standard which you gladly accepted. He told you that he wanted to sm try which you accepted, you taught him the basics of partnering like where to hold you when turning or balancing, all in all, in your guy's free time you guys turn some ballet songs on and dance together.

Decay If Angels

Fyodor Dostoevsky:
He's knows his stuff, he's Russian, he knows who Tchaikovsky is and his work. Yet he probably already knew you did dance, he's probably seen you dancing before whether it was an old recording or you just dancing when you're "alone". When he has the time he'll one day ask you about it like what's your favorite music, you favorite dance, composer, etc. You two were probably in bed about to got to bed or something and he suddenly would ask you if you can still dance. If you say yes, the next day he'll ask you to dance for him and do a variation you really like. Depending on the what it is he might play the cello for you instead of the music recording. While you dance no doubt he'll record you, not to brag about it but to watch it hen he needs a cool down. But at some point when he's in his office, Nikolai would sneak in to see him watching the video. He would tease you about it. It would probably at the most random times, " So Y/n, I heard you're really flexible and good with your legs" he would have a smug look on his face, Fyodor would be embarrassed of course but he wouldn't show it, but you on the other hand you'd be looking away with the biggest blush while Gogol was laughing at you two. Fyodor took you away to your guy's room and told you not to be embarrassed because you're so good. His favorite Variation you did was the one in the video,Esmeralda, you looked so fierce but yet so calm, you looked confident and you nailed it. you would partner you with your fouettés.

Nikolai Gogol:

He found out when you guys were playing nightly 12 am 2 truths and one lie.... " Okay Gogol, I did ballet for 13 years, I'm hyperextended with my knees, I'm a russian spy." He laughed at the last choice "Ah shit, i don't know, i think 2 and 3 are the truth" he said sarcastically, you shoved his shoulders while laughing. " Im kidding 1 and 2, right? you're not a russian spy-" You agreed, " damn 13 years, shit. Can you still dance?" you nodded " I can teach a dance if you want?" You agreed to do it. At the end of the conversation you being the 'responsible one' you suggested you two go to bed. The next morning you woke up later than usual since you stay up late, but you couldn't sleep in for too long, Nikolai did everything to wake you up. When you got your composure, you got ready, when i mean ready you put on a nice purple and white leotard that went to you neck and had a low cut in the back. you braid your hair like how you would for dance but you didn't put it in a bun. You put your old shoes that somehow still fit you. He came in on you getting ready and asked if he could do anything, you shook your head and said "maybe try to get your hair even more scarier than it is right now?" he pouted and told you to take it back. you shook your head again jokingly, "put your hat and cloak on then, you'll be able to fit into character maybe?" he ran out the room to wear them. you came out with your leotard hair braided and and in shoes that made you 3 inches taller. His draw dropped slightly. "you ready?" you tilted your head. He nodded with a slight smirk. You two decided to do the Little Red Riding hood Variation from sleeping beauty. It wasn't too hard because you didn't lose much of your technique and flexibility, and the wolf does do too much other than pantomime and some jumps which Nikolai didn't do bad on. He loves when you do an arabesque and he holds you hips of when you lean back on his arms and he holds you so you don't fall.

Sigma:

Sigma probably heard of ballet and maybe watched one, he also turns on specifically ballet music when he is in his office or when he's home. When you told him you do/did ballet he actually looked so happy, he wanted to see you dance so badly. This is probably another thing he's interested after his casino. He would passionately watch you doing you variations. He would ask you if you had any old videos of your old performances, if you gave him the videos. He would watch them with you or watch them in his office during his break when he has one. When he isn't busy you would ask if he could dance with you, he was weary but agrees to it at the end. His favorite variation you did was the Lilac Fairy in Sleeping Beauty. You look like a spirit, the way your feet are gliding on the floor and the way you make it look so effortless. Hes speechless and loves it so much. He could watch you dance for hours on endless, if you asked him to partner you, he would just hold your hips when you do pirouettes or penches.

This took so long to write and decide lol. I'm probably not gonna do the hunting dogs sorry.