Four chapters might be enough to defuse the drama and start amending these broken friendships, but it's nowhere near enough for anyone to actually start dating. The emotional wounds here run way too deep for that kind of quick turnaround.
Take Sakine, for example—she's essentially self-destructed at this point. As emotionally fragile as she currently stands, a relationship seems impossible. I'd say any shot with Chiyoko is pretty much gone at this rate, and getting past her heartbreak quickly enough for Shinoppe? Doesn't seem likely either. And honestly... Mafuyu's chances are long since dead.
Now, Chiyoko and Mafuyu together? Maybe possible in theory, but probably not. Mafuyu's already dealing with depression after being friend-zoned by Sakine, then seeing her crush kiss Chiyoko just piled more trauma on top. That's going to take serious time to process.
From Chiyoko's angle, even though she's been dragged through everyone else's chaos without really doing anything wrong, her kindness makes her prone to internalizing blame. She'll probably carry guilt about possibly fracturing this whole group dynamic—and that guilt alone might keep her from pursuing anything with Mafuyu. Sakine's presence will haunt that decision regardless.
So yeah, bottom line: I don't see anyone landing with anyone soon. If relationships do somehow form naturally by the end? Then the author's basically working miracles.