Just did my first playthrough (son), here are my thoughts.
I'm happy that this is a more story-focused game with a good amount of writing, but the transitions between scenes and events is sometimes jarring or confusing.
I am NOT a fan of the mother as a character--she's annoying and I don't find her attractive at all.
This is amplified by the fact that the game seems to force either a son-mother relationship or father-daughter.
I liked the sister, but that option seems to be unreasonably cut out of the story intentionally. I prefer brother-sister games and so it really sucks to basically be cucked by the father while being forced time and time again into scenes with the mother (which I skip), even after--given every opportunity--selecting the option that either denies or minimizes the romantic and sexual encounters.
The interactions with Karen were pretty enjoyable, but even those were fucking ruined by the clingy mother.
I might do another play through as the father, only so I can get the content with the daughter, but I don't really connect to that relationship.
It really boils down to this: as far as romantic choices go, rather than letting you choose between the mother or sister, the game forces you to choose between playing as the father or son. Which I don't like at all.