On the end scene and the "fuck fuck fuck". It would have deserved a nuance or two.
Next about Sage. Instead of saying that she is changing, I would rather say that it is the MC / player who really gets to know her. There are also the situations that change, here we are in a more serious situation, which changes from the start of the game.
For her parents, we understand that she wants to be independent, so that she does not put her family connections forward at all (unlike her brother). Remember that the MC has only been there for 2 or 3 months.
everything is fine, but the issue of the secret family is only finalized to the plot, it has no credibility at all
if we are in relationship with Sage when she explains that she is going to talk about Maya's problem with her family, it doesn't make sense that she doesn't warn him about who they are, even MC could ask, but if Sage is silent he can think that they are any influential family in the world
but just in general, in case MC hangs out with Sage, there is no way that anyone among DIKs and HOTs would warn him, not even after seeing Jade's sex tape...
the "fuck fuck fuck" can also be forgiven, MC often had overreactions
let's just forget about it and move on
DPC has a strange relationship with family relationships, in the last chapter when Maya tells him in the reception game her last name, he is surprised...let's face it...the last name of his fraternity brother and the girl he lived with...if MC may not know Maya's last name in my opinion he may not even know his own