Hell yeah arumika I was waiting for this one
who cooks normally?:
Mikasa. Armin is clumsy and has a tendency to babble while he’s chopping or stirring and he constantly nicks/burns his fingers and Mikasa wraps them up and tells him to set the table instead and he’s a little embarrassed
how often do they fight?:
Mikasa doesn’t like arguing and especially not with Armin. If they do end up arguing it’s usually because she pushes herself too hard, and even when she’s given time off the woman just can’t stay still and Armin gets so frustrated when one day when she reopens her wounds because she was doing sit ups and she’s peeling her shirt off and he’s pulling off the bloodied bandages and telling her she can’t keep doing this and she dismisses it by saying ‘I’m fine, Armin’ and he snaps and actually yells at her, which stuns her.
Armin’s temper is hardwired to his tear ducts though, so his throat closes up and he hates it but damn he’s crying so he leaves and later on that night he finds her actually resting and she wraps her arms around him and murmurs apologies while threading her fingers through his hair
what do they do when they’re away from each other?:
Armin does all the things he doesn’t when she’s around, like leaving papers and books strewn about everywhere and probably gets ink on the table and dish clothes and he has to figure out a way to keep her from seeing it when she gets back but he gets really antsy after a day or two? Armin doesn’t like being alone, and he misses the way she always climbed up onto the bed/couch whenever he was reading and put her head in his lap so he could run his hand through her hair while he read to her out loud and Armin always wonders if Mikasa was a cat in her past life
Mikasa probably trains (I know I’ve said that with the others) much more intensely and sometimes she bruises and ends up pulling something and she misses the way Armin would fuss over her and wrap her wounds and press kisses over the bandages
nicknames for each other?:
I don’t think either of them are one for nicknames but an occasional one might slip? Like it’s getting late and Armin still hasn’t gone to bed so she looks for him and finds him passed out on his desk and she kisses his forehead and tells him baby you fell asleep in your office again
who is more likely to pay for dinner?:
Armin. He likes handling all their paperwork and bills and he’s constantly going over their bank statements because they like saving up for trips to Europe or Africa or wherever the hell else Armin sets his sights on and Mikasa trusts him enough to hand him her entire check
who steals the covers at night?:
Mikasa usually ends up stealing them but she tries really hard not to? They both get incredibly cold very easily so they have this nightly ritual where they press as close as they can and tuck the sheets around and beneath their bodies and there’s something really nice about tangling their legs together and seeing how pretty each other’s hair looks when it’s fanned out over the pillows
what would they get each other for gifts?:
Mikasa first got him casual things—journals, pens, a pair of glasses because he squints too much, and when he loses them for the fourth time a chain to keep them around his neck—but after a year or so she’ll surprise him with a picnic at the beach or two plane tickets to paris and he has this soul deep wanderlust and just loves traveling and Mikasa thinks Armin must have been a bird in his past life and at night she’ll trace his shoulder blades and wish she could give him wings
who remembers things?:
Mikasa. Or I suppose it depends on what exactly. Armin has a damn computer up there and he catches on so many details but where are his glasses? where is his pen he just had it in his hand right now—and Mikasa just touches his ear and it’s right there and he just blushes and walks away
who cusses more?:
Armin. He’s clumsy and it’s because his brain works too fast for his hands and feet or he’s always day dreaming. He curses whenever he trips or spills something onto his paperwork and he apologizes for cursing but the next morning he’s taking a shower and he drops the shampoo bottle and he just explodes into the most creative string of epithets she’d ever heard—which says a lot because Eren.
chayashix and I have this headcanon that Armin has a filthy mouth in bed
what would they do if the other one was hurt?:
Mikasa would carry him with one arm and slay with the other if she has to no one’s going to hurt Armin
Armin would get shaken up at first but force himself to calm down, to think and figure out how to get them out alive all he has is his brains and he’s going to use every ounce of intelligence to save her and it may not be enough but he’ll find a way because if anyone can it’s him and she deserves everything he’s got
who kissed who first?:
Armin kissed Mikasa. Armin seems very touchy? So they probably do the whole hand holding/hugging/kiss on the cheek thing daily and Armin had wanted to kiss Mikasa for a while and one night before she leaves she leans in to brush her lips across his cheek but he turns his head and their mouths touch and they freeze—but Armin just smiles and waves and tells her goodnight and gives her this innocent, questioning look? They both fall asleep smiling.
who made the first move?:
After the thing Armin pulled with the kiss Mikasa probably went hunting for him the next day and found him reading or talking to gods know who and grabbed his jacket and kissed the wits out of him and gives him that same questioning look? Armin feels electrified for the rest of the day.
who started the relationship?:
Eren? (can I do that?) but I feel like one day Jean or some other punk was kinda pining over Mikasa or Armin and they ask them during dinner ‘are you guys together? do I have a shot or?’
and before anyone can answer Eren gets really defensive and scowls and says ‘isn’t it obvious? they’ve been together for a while now, back off’ and that’s that.
I’m so happy you sent me the arumika, whoever you are