This game seems really interesting to me. I wish it had better reviews: not in the sense that I wish the game had a higher rating, but in that the sense I wish the negative reviews weren't quite so stupid so I could get a better grasp of what's actually going on. It comes off like the people complaining are mostly spergy ESL dumbasses that think if two girls lez out in front of the MC it's NTR and are raging about it. The positive reviews intrigue me, but even they are really light on the details when it comes to the story. I quite like the concept of a guy that's been beaten down by life and as a result is gunshy getting lead around by the nose by the strong personalities of the women around him. It being the girl that initiates things and strong-arms a reluctant MC , wearing down his resistance and morals, is always more interesting (particularly in an incest game, where you expect at least one of the characters to have scruples about such an act), but I'm not even sure that's the concept this game has since the reviews are so poorly composed and I can hardly draw any information from them. The pushy, sexually aggressive sister character seems interesting as described...I guess I'll give it a shot and see what it's all about.
edit: reading the latest comments, I really just hope the complaints haven't lead the author to second guess himself and compromise the central theme of the story by trying to make everyone that's bitching happy and changing the characters' fundamental nature. If it's something he'd planned, result of personal growth on their part or if certain revelations lead the MC to understand the reasons for their actions better and improve the way the he interacts with them, leading a deeper understanding between them and a deepening/softening of their relationship all around, then great! But if it's just asspulls motivated by outside criticism and not anything he'd already planned, that's going to be apparent anybody playing the game that isn't thick, and it's going to hurt the narrative.