100th QUESTION!!! this is such a good question. i think hiiro, tsukasa, niki, and hinata are actually a really fun group, i’m pretty sure they all know each other already and get along well (save niki and tsukasa who are probably a little tense due to sudden death). i think hinata and niki would tease them a bit, bcuz hina is mischievous like that and niki gets some hiiro big brotherisms from rinne lolz. i think generally when they visit each other it would be to study, and i imagine they would study w hinata too but they learn quickly that they aren’t a super productive group and get distracted easily. but i imagine they definitely have fun and have cute little sleepovers and stuff :3 as for tsukasa’s roommates which are souma and shinobu, i think they are a bit more respectful of their space and definitely better study partners!! they probably frequent tsukasa’s dorm more for this reason and it’s definitely a lot more relaxed.. they also have shenanigans potential tho i imagine shinobu being like ??? sometimes since tsukasa, souma, and even hiiro can all fall into the habit of speaking really properly… generally everyone gets along tho!!