Yuru-yuri-stuff

The NHS website (yes, I'm Bri'ish) has a list of the signs of autism so I've went through them all to see what ones do and don't apply to Chinatsu. I chose the adult's list as she isn't written to be particularly childlike. (Unlike a show like Mitsuboshi colours or Wataten.)

Main signs of autism

Common signs of autism in adults include:

finding it hard to understand what others are thinking or feeling. YES, there are too many examples for this one but to list a few: massaging Akari despite her asking Chinatsu to stop, not realising that she's hurting Yui by clinging onto her arm during the scary film.

getting very anxious about social situations. Not really, she's nervous when first applying to the amusement club and sometimes around Yui but that's it.

finding it hard to make friends or preferring to be on your own. Yes, she never mentions any friends that she had before joining the amusement club, even in the flashback she is alone. Even the friends she makes during the show are forced onto her or are friends of friends.

seeming blunt, rude or not interested in others without meaning to. Yes, mostly to Kyoko.

finding it hard to say how you feel. No, not at all.

taking things very literally – for example, you may not understand sarcasm or phrases like "break a leg". Hard to say, given the language barrier. I don't know how some phrases would have been translated.

having the same routine every day and getting very anxious if it changes. Hard to say, as Yuru yuri jumps around in time but there isn't much to support this one.

Other signs of autism

You may also have other signs, like:

not understanding social "rules", such as not talking over people. Sort of, while she doesn't break any rules in conversation she does break some other social rules like when she made everyone continue to play the king game for her sake.

avoiding eye contact. Hard to say, it's never directly shown but she could be looking past people instead of at their eyes.

getting too close to other people, or getting very upset if someone touches or gets too close to you. Yes to both, she constantly hugs Yui and grabs her friends' hands when excited. But she also doesn't like when Kyoko tries to hug her. (But that might just be Kyoko thing.)

noticing small details, patterns, smells or sounds that others do not. No, it's never shown.

having a very keen interest in certain subjects or activities. Yes, being tea ceremony and Yui.

liking to plan things carefully before doing them. Yes, in the extra booklet "until you're a princess' (chapter 148.5) she stays up for over an hour picking an outfit for her date with Yui.

Autism in women

Autistic women may be more likely to:

have learned to hide signs of autism to 'fit in' - by copying people who do not have autism. Possibly, it might explain the traits that she doesn't show.

be quieter and hide their feelings. No, as I said, she makes no attempt to hide her emotions.

appear to cope better with social situations. Yes, she does cope well in social situations.

show fewer signs of repetitive behaviours. Yes, she doesn't show any repetitive behaviours.

Keep in mind that you don't need to show every trait to be autistic. There are also some things that this list doesn't mention that are note worth.

In the previously mentioned extra booklet she has what could be a melt-down when she thinks that she ruined the date and that Yui would hate her.

She sways, and grasps her hands or holds her face when something romantic happens which could be a stims. She doesn't stim normally but as stims are meant to regulate emotions it makes sense that she would use them in such situations.

In season 2, episode 10, when Yui and Kyoko are in Kyoto and her and Akari are left alone in the club room, she acknowledges how tunnel visioned she gets around Yui and asks Akari to continue being friends with her. This is possibly her admitting that she is bad at realising when she upsets people and is asking Akari not to leave her because of it.

She has a short temper which may or may not be related to autism.