Decided to post my own comment regarding the MC's mother arc.
It seems that the Mother will not appear again on the story if you are on the No NTR route,going to the MC's grandmother or something like that.
Personally I would love to interact with the mother on this particular "forced" setting,as erasing her completely from the plot seems like a waste of what could have been a really interesting character.
Specially on the VN world it could be just the "alternate start" or another part of the "multiverse of choices",speaking with both the bitchy MC's mother and grandma on the no NTR path would be really interesting perphaps even she mentioning Frank(her lover) implying that they have fallen apart recently on that route.
Beyond critics to the Worldbuilding of the plot I must say that I have no further complaints,the branching is one of the best applied to these kind of games,every route(Nerd,Chick,Jock) is shaping up to be its own narrative perfectly including into the global archetype of your planning.
What I noticed is that the transitions can be at times be quite confusing and you clearly locate as a player the intention of one event substituting another,I remember this specific scene with Rachel and Maddison interacting with the MC and right at the end Maddison telling the MC(as if she barely knew him) that her friend Sandy wanted to speak with him,even when the MC already knows Sandy on the Chick route meeting her right on the first branching choice.
Anyways played 0.5 quite late and on Android but I end up quite pleased with your work and cannot wait for the incoming 0.6!