Stumbled upon this game during this week, and just finished it up this morning. Though... I think I'd call it a VN more than a game due to the lack of decisions / choices that you can make. Not that the ride wasn't fun, I certainly enjoyed it. There were some decisions that the MC made that I didn't like / wish I had more of a choice in (particularly going with a rapey approach to his sister early), but that's small nitpicking. The ending was a bit abrupt as well - not that I didn't see the foreshadowing with Mia's decision (and frankly, that was good character development on her behalf throughout the story and showed maturity on her end), but it just... left quite a bit unknown. It's my understanding that there's a second game being developed now to continue the story, and I'm certainly going to dive into that, but wish I had more context on the at home dynamic that remained. The whole brother-sister relationship usually comes to a head at some point, and I understand where Mia was coming from. I suppose on my end it seemed like the MC didn't have anywhere near the same feelings for her, since he just accepted it - granted, I could interpret that as he has more feelings for his "mom", but it just seemed... cold, though I guess I'm nitpicking given that the story did have to wrap up a bit.
Besides the character development of Mia, I also appreciated Emma's character, in the sense that I went from liking her as an individual in this story, to liking her less and less and frankly slightly disliking her at the end - that's well done, and I 'like' her character arc even if I ended disliking her at the end.
I don't really do reviews, though I suppose I probably should start doing so, personally this game / VN, with the story, characters, scenes, animations, and all around, a solid 4/5 IMO.