who wakes the other one up with kisses: i'm not sure that either of them would? idk, for some reason i always envision chisachacha as not a particularly affectionate couple overall. they're more about the intellectual and emotional connection than the physical stuff i think. which is not to say that they never do anything physical but wow i'm getting way off topic. (long story short i picture basically that they're not very physically affectionate aside from when they're having sex. idk why i think that but there you go.) anyway. if either of them was to do this, it would be chachamaru, and chisame would be so embarrassed and pissed off. every. time. knock it off already, you damn robot. gross. i'm awake already. go make tea or something and leave me alone.
who cooks for who: chachamaru cooks for chisame, especially after visiting her apartment one day to find that she had been subsisting on nothing but cup ramen for months. after all, it is vital to take in the necessary amount of nutrients to maintain optimal performance ability.
who is the morning person/night person: well chisame is obviously a night person. she stays up well into the night surfing the net and just generally being the living personification of tumblr. chachamaru actually requires no sleep because she is a robot, and the time she requires to shut down and recharge is relatively small, so she manages to be both a night and a morning person. she often wakes chisame up with the smell of breakfast cooking. chisame says she likes that a lot more than waking up to that kissing shit.
who is the romantic one: chachamaru. she has a whole database dedicated to romance and romantic gestures. hakase thought it would be useful to her after she started developing interest in negi.
who is the top when it comes to sex: i really haven't actually thought through the logistics of how their sex would even work so i'm not entirely sure? like i mean okay the only erogenous zone we know of for sure on chachamaru's entire body is on the back of her head, so i guess chisame could quite literally top depending on the situation? but yeah actually probably chisame anyway come to think of it.
who would lead in ballroom dancing: i was going to say probably chachamaru just because she has the advantage of being able to be programmed to know how to do anything and would chisame go out of her way to learn ballroom dancing anyway? but then i thought of this: chachamaru has been programmed to know how to ballroom dance, but because she was programmed to do so with negi in mind (u really gotta stop that hakase) she doesn't know how to lead, which doesn't really become an issue until she and chisame are at some ambassadorial function with negi and circumstances are such that they have to dance with each other and that's when they realize. neither of them knows how to lead.
who is the more cuddly one: well despite all of my talk above about how i don't picture them as being particularly affectionate with each other... i actually think chisame has a real need for affection that she naturally doesn't get on account of being a solitary shut-in all the time. so when chachamaru comes over chisame will like cuddle/spoon with her whenever an appropriate opportunity arises, all while cursing up a blue streak about how it doesn't mean anything, okay? she's just cold and chachamaru's heat output system is nice and efficient. if you tell anyone about this i swear i'll have hakase install your brain into a cow.
who is the one to most likely pick the movie they watch: chisame, mostly because chachamaru doesn't care at all and only uses the movie watching as an excuse to spend time with her.
who is the one who would pay for dates: if by "dates" you mean "chachamaru comes over to chisame's apartment a few times a week and makes sure she's eating and that her house is clean and they spend the day doing completely mundane things" then uh. i guess chachamaru buys groceries to cook dinner with? at least at first, but then it starts annoying chisame that chachamaru would assume that chisame didn't have any food for her to cook with. suddenly chachamaru notices that groceries have started appearing in chisame's refrigerator without her putting them there. she's not sure where they come from. chisame won't tell her. but she doesn't mind, because at least that means that there's a better chance chisame will eat better when she's not there.
who is the one who would initiate a quicky during classes: i'm... not sure? they'd probably both be pretty good at controlling themselves. there's an outside chance that chachamaru may need a good key winding and ask chisame to do it for her, i suppose, and in very rare circumstances i could imagine chisame deciding to just give up and go for it, if she was angry/worked up enough to not care if they got caught.
i hope this's good enough! i actually don't always feel like i have a particularly good handle on their relationship dynamic, which is kinda funny considering a lot of people tell me my fic is the one that got them into this ship in the first place. but tbh my ability to write them just kind of comes in flashes, so i'm always paranoid about it.
(also sorry, it's already almost 2am here so i think the other three are going to have to wait 'til the morning. but there's some stuff in there that i usually don't get so i'm kind of excited about getting to them!)