Honestly this game might be a bit to early to review, and is certainly to early to even try and place somewhere on my personal list, link in the sig below. But even with that being said I am already in love with this game and this story.
Truly, I am. One of my favorite VN's of all time is "Sisterly Lust" and not for the models or images, not for the harem aspect either. I love it for it's genuine connection and relationships that envelop it's story. So with "Mother Lovers Society" and the Chapter and a bit that is already out, I'm completely invested in not only these two characters, who I can already see and feel their personalities, but the relationship they share as well.
I want to know how it started, I want to know their past, what the 'rules' are for each other, why they had to move, how are they going to handle living as a couple, will they get what their hearts desire, what does the future hold for them.
Most of the games I have played through, especially those of the incestual variety have been males and moms, sisters, aunts, cousins, etc. I can only think of two others off the top of my head that has a female MC incest story, and even one of those gives you the choice of male or female in the intro. So this already is something special to me.
If things hold, and the story gets deeper and richer, conflict, love, romance, raised stakes, etc. And it has some real length to it, which I hope it does given that it is split up into chapters, though chapter one is rather short by itself. I could easily see this story breaking into my personal top ten, or even top five. I honestly think it can be that good.
P.S. Visuals are amazing as well.