I think the two people having sex are Shirahasi senpai and Fujiwara

i think so too. but fujiwara and shirahashi acts like (=・ω・=) nothing happen between them. so im guessing that its not them. for me

I do not believe they hook up. I read the draws and longer hair does not match at all. The two people were sneaking in from the new dorm I believe.

doubtful, as they have their own room, and wouldn't need a 2nd one, which is right next door to the others!

Well I would like fujiwara and shirahashi to hook up .