there is some old man groping the older sister who thinks he is still in vietnam and she is a prostitute. from what i understand, he isn't a returning character, just a one time deal (well, he appears multiple times, but just that update he debuted).
there's last years christmas bonus. MC has a dream, where it time skips to christmas. judging by your answers, the 3 main girls are pregnant with your kids OR NTR kids. the dream is canon, but it's just a dream. Dev mentioned that it's peak at who the potential NTR's are gonna be for each girl. the NTR guys could change, since it was a while back, plans could have changed.
your mom is giving another boy in your class blowjobs. that happened this update, so she is making progress in that aspect.
it's all avoidable of course.