I'll start with the negatives because they are few and minor in the whole. First, the posing of the models feels awkward. I don't think I could do better, but it's noticeable and I'm sure as the author continues to get practice, they'll improve. Second, the lighting could use some work. Again, I can't help with what feels off, but I'm sure it will improve in time.
With that out of the way, this game is excellent. The biggest standout is the character writing. The author seems to understand that it's ok for side characters to be caricatures, but the important people in the story benefit from depth. So many of these stories fall into the same formulaic traps where everyone seems like an idiot following a script.
Steph in particular is intelligent, flawed, but a good person and eminently likable. The author manages to walk the like of giving the player some agency with how Steph accomplishes her goals, but we are not allowed to fundamentally change who she is with a single out-of-charater choice. In particular and avoiding spoilers, in an event early in the story where she helps a character out of an awful situation, another game would have given the player the choice to help or not. Instead, Steph is shown to never seriously consider not helping and that serves to make her a stronger character. The choices we get are largely at reasonable places that do not conflict with Steph as a person.
I won't go into so much detail as to describe each character, but those who are written to be full characters are largely excellently written. I'm not sure I've seen a better manipulator than Sadie in any story where she was not the protagonist. As the player, the bully is usually a predictable antagonist, but I can say that I think Sadie is honestly trying to help in her own messed up way. I hope that's the case, but I recognize that it's possible she is playing out a long con and that's critical to making Steph's relationship with her believable.
The last note I'll make on character design is Hu. I think he does genuinely care for his sister and vice versa, but that care does seem to be obscured behind his function in the story as the horny brother who wants nothing more than to leer at his sister. I'm on board with horny Hu continuing to move the plot forward, but I hope that it is reinforced that he loves his mother and sister as family, as well as hot women.
Speaking of hot women, I'm really impressed by the character designs. Of the core cast, only Sadie looks like a stock model and I see that as an intentional (and clever) choice. Most of the characters have character in their design. Steph and her family have a measure of family resemblance. In most games, this is accomplished by breast size and using similar stock faces. Here, they all have distinct faces that retain family resemblance. Steph and her mother are beautiful in face and body, as you'd expect of the genre, but their faces aren't generic. It's a welcome balm after all the same-face syndrome in most games (even excellent ones!) and especially with the rise of AI generic-ized 'hot chick.'
I've blathered on long enough. I hope the author continues to be inspired and motivated to work on this game for a long time coming. This has quickly become one of my favorites I'll be keeping a close eye on.
Thank you!