OK GOOD I DIDN'T MISS SOME VITAL PIECE OF CANON THEN THAT WOULD RUIN HOW I WRITE HIM but he would absolutely make his RA life hell

Show up for hall meeting? :) :) That's cute. Participate in dorm events? Wow where did Natsume go? He's suddenly missing from his room. Keep up a nametag to make it easier for people to know who he is, and possibly befriend him? Whaaaat how does that thing keep going missing? So weird!