They are still together, Sukoya-san is currently in the middle of taking a eight month break from most of her vtuber stuff because she has a major exam coming up for her medical career.
Their relationship is very interesting. It feels like Sachi is trying to trick Minami into being happier. Like, she wants to control her, but just to make her happy.
^As I said, sexuality is all too malleable in the hands of comic writers. I cannot speak for runs before the 90s, but it doesn't surprise me that they flip-flopped so much. At least it was not such a drastic move as when they altered Iceman's mind to make him gay.
Only just noticed Rina's flask of suspicious blue fluid in the first frame. Rina, you gotta stop with these Special Drinks that turn your friends into the undead.