Let's go to the charts:
Ako - loves Komachi (maybe?) but is scared of the future and wants to get away ... also, probably the incest thing, but twins are weird
Komachi - cray cray
Yuki - loves both (?) the sisters, but I believe leans more towards Komachi
Maki-sensei - started out trying to do the right thing, but is going into self-destruct mode thinking she's in love with Ako because fuck it, why does she always have to be the good girl
Volleyball-sensei - interested in Maki (probably) but also sees what's about to happen and is trying to stop her from ruining her life (only fully sane character so far)
If I were to make a guess, I'd say one of these characters ends up dead (my money's on one of the twins - Komachi, probably, since she's a cutter now) and probably Maki getting kicked out of her job.