I’ve written a few fics about Czerny now, and at least one specifically around the idea of him being autistic. I received a lovely comment where a reader was interested in the idea and was curious about textual evidence, and seeing as others have written in-depth posts about autism headcanons...well, I decided to do the same, and to post it here instead of in a long rambly comment-response!
So without further ado...some headcanons on Czerny, how he could be read as autistic, and how this influences his character, under the readmore. Light spoilers for Lingering Echoes, Ebenholz’s operator record, and Czerny’s trust files are included for those who haven’t read. (And for those who don’t want to read: enjoy this art from his creator!)
I didn’t set out to headcanon Czerny as autistic when I first read him, I swear. However, as I read through his dialogue and operator files, as well as overanalyzing some of his design choices, I realized that an argument could at least be made for him having a Sensory Processing Disorder (something that runs in my own German/Swiss-Austrian family). Thus, let's start with some of those points:
Stimming. He outright states this one in a trust dialogue: "My hair, well...I often unconsciously grab at it while composing, if that explains its current unruliness".
Speaking of hair: in both his official art and all the art by his creator, he always has his hair braided directly above his ears. The outfit, collar, and even his eyewear changes, but that element of his hair remains. Wouldn't it make sense if he's overly sensitive to his ears being touched by stray hairs, so he takes extra pain to maintain those braids?
Issues with food. There are repeated comments about Czerny not eating when he's in the throes of composing, which at first glance I took for hyperfocusing on his work. He's also the most wary of Hibiscus's cooking in Lingering Echoes, which is clearly meant to be played for laughs regarding her cooking. However, I also read it as someone who's used to having his food a very particular way, and when the food is changed up or replaced entirely, adapting to new textures and flavors can be difficult.
It makes sense that Czerny would take special care of his hands, and this comes up in a lot of dialogue. The medics even comment that he'll panic if he has "so much as a hangnail". But if he's sensitive to touch and texture, AND he takes extra care over his hands, an overblown reaction like that would make sense.
Now, as I was reading into his files and dialogue for these points (as well as other fic research), I was struck by a few other elements.
One is his blunt, honest manner. Both in-universe and as noted by fans, Czerny can be a harsh but fair critic. He himself states that "Any charm or taste I may have had has been poured entirely into my compositions." For the most part, he doesn't concern himself with pleasantries or making nice; if he has an opinion, he'll state it. But he's not one to lie, and even espouses the importance of earnestness to Ebenholz during Lingering Echoes.
Despite this though, Czerny does have to hide a lot of his own emotions in order to deal with his circumstances, at least in Lingering Echoes. He has to bow to Nobles and their whims despite his loathing for them, and there are numerous points where he holds himself back from voicing his opinions in public. He also identifies himself as a coward, and has multiple dialogue lines denoting his own fear. "I'm terrified, Doctor. Always have been."
Looking at these elements together, I'm under the impression that this man has learned to mask a lot in order to survive. And when under the constant pressure of not only poverty and illness but also supporting an entire community? No wonder he’s considered tempermental.
The only times he seems able to truly express himself is through his music (note how he emphasizes the importance of emotion in music during his 2-star clear line) and in battle, where he goes from polite to screaming at his enemies. We also have the note in an operator file from a professor that Morgen und Abend was one of the few glimpses through his "iron body". And there are multiple times in both files and dialogues where it’s noted that he’ll refuse to budge from his desk until a composition is complete...that moment, perhaps, when he finally figures out the feelings in his heart and how to express all the things his words fail to convey.
Music is how Czerny expresses himself, though one should also note that empathy for others is also important both in and out of music. After all, he corrects Ebenholz that Morgen und Abend wasn't written from his own grief, but out of indignation for how she suffered. He gives up the rights to his music in order to save the people of the Afterglow during the events of Lingering Echoes. Hell, even in Ebenholz's Operator Record, Czerny is touched that Ebenholz is the one defying orders and performing for the Afterglow's residents, but also begs him to stop in order to keep him safe. He loves music, true, but he loves people even more, and he cares so damn much he’ll repeatedly put his life on the line for them.
So, whether or not it was intended by anyone who worked on his character, Czerny reads to me as autistic. Passionate about what he loves, keyed into the feelings of others while having notable difficulties with conveying his own emotions outside of music, and processing the world a little differently from those around him. And I think that’s all key to not only how he creates his music, but how he connects with others, and how he’s learning to move on in a world so much bigger and stranger than where he grew up.
And even if he's still figuring out how to balance the new and familiar...even if he's scared of it at all times...Czerny keeps going anyway. He helps others with music and arts. He expands upon his own skills, even developing new hobbies in habits. Hell, he even gets a motorcycle to go exploring across “those faraway lands roaring through Czerny's mind without abate.” He's going to be okay.
(And watching Czerny be brave and move forward in the face of so much change...well, it inspires me to bravery too.)
Well, those are my thoughts with evidence on the matter, and I’m sure I'll pick up more when I do a full reread of Lingering Echoes. In the meantime, feel free to share your thoughts, and I hope you enjoyed reading!
(and have some more creator-art because I am incredibly gay for this image okay byeeee)