9-11 (okay i know this title looks weird)
Hermione teaches Armin how to make coffee after he realizes that's what Berthold, Reiner, and Zeke were drinking. He found her sipping it one afternoon and found the smell appetizing and familiar. He then asked about it and she began explaining what it was and how to make it. (Yes it was very cute with many eager questions asked by Armin, a lot of fumbling, (un)necessary touches and fun banter,)
They occasionally dance together when a really funky song comes on. She teaches him all the popular moves and their names. He admires how well she dances when in reality she's not quite as good as he proclaims/thinks- but her cheeks heat at the praise anyway.
They also tried slow dancing once but realized all too quickly how intimate it was- and they've been trying (and failing) to avoid those types of situations and feelings. But they sometimes swing each other around in circles, line dance, or do other kinds of dances that require touch.
Armin always sits either across from Hermione or next to her during meal times with the other scouts. And sometimes their thighs touch and hands brush up against each other on purpose.
Armin is very fascinated with and admiring of Hermione's lower body, specifically her ass and thighs- but he lowkey feels disgusted with himself for thinking about it too much, but also doesn't care enough to stop and continues to admire anyway.
Mikasa mostly visits alone or occasionally, with Eren in tow just to listen to music and talk about semi non-personal deep shit like lyrics and being a workaholic/giver. With the amount of translation and discussion, Mikasa is practically learning English too.
Jean talks with her when they're out on whichever construction site they happen to be at. He mostly asks about her world and sometimes jokes about the more liberated fashion choices she's mentioned. He's kind and charming but keeps an obvious wall between them. He also engages with her in a more casual manner when other Squad members are there too.
Sometimes Armin likes to sit and listen to Jazz as he compares their hands, from the size to the way her palm is lighter than the rest of her skin, to the way her calluses are from writing and wand wielding while his' are from sword fighting.
Hermione likes to braid and play with Armin's hair sometimes.
Sometimes Hermione allows herself to cry for the friends she might not be able to see again.
Hermione worries and thinks about what the rest of her world is thinking, especially her friends. "Has time not changed and I'll land right when I departed or will they think me dead or missing, captured in some sort of way?"
Sasha and Connie visit to dance and hound Hermione for treats but Sasha more so. Jean sometimes joins them to make fun of their dancing but joins in anyways.
Levi makes Hermione clean with everybody else, sometimes by hand, sometimes with magic, or both... depends on how much she sasses him that day
Levi and Hermione did end up having a chat over tea.. and it actually went smoother than expected. (Hermione thinks he secretly likes being called Uncle Levi)
Hange and Hermione work with engineers on much of the renewable energy ideas and the idea for the train. They also discuss the more strategic aspect of it with Armin.
Hermione and Hange have fanatic, scientific discussions occasionally... and over coffee which Hange turns out LOVING (surprisingly not).
Hermione secretly, but not so secretly does arithmetic equations obsessively to figure out how and when she'll get home. Sometimes Armin will have to pick her up from her desk or the couch and drag her to bed.
Hermione becomes a regular at the orphanage and it seems that squad Levi and any additional scouts really do their bonding together and with Hermione there. It also helps that the children absolutely adore her.
Armin blushed and began stuttering once when she was only wearing a large sweater that bared one of her shoulders. They were having language lessons and it took him a while to focus... she never wore "just a sweater" again.
Hermione explains fish to amphibian to the first mammal to ape to human evolution- which Armin is ecstatic about. "We come from the Ocean?! Oh wow!"
She notices that Eren looks at her oddly, more like he's trying to figure her out but not in a negative or appreciative way- just in confusion.