I must admit it, even though incest is a huge turn off for me, I quite liked this game and I cannot wait for the rework and the full game eventually.
I guess the best thing I can say about this game is that I sat here for the last 3 hours refusing every advance made by a family member and I still loved the game. Hell, maybe it is the fact that certain relationships are decided before you assume control, but by the end, even a massive incest hater like me could feel the connection to the sisters (not mother, that still remains sacred

) and I feel like trying their routes when the reworked game drops.
The only thing weird and bothering me were the moments when player makes decisions for Miru. I assume that's where NTR comes in, but if you control everything yourself then why would you do that? And then even if you do, MC still doesn't know about it and you don't feel like you have a moral right to leave Miru and it just gets weird.
I guess what I'm trying to say is, came for the porn, stayed for the story. Chapter 6 part was quite a bit more emotional and with some obviously missing lose ends (as the DEV has told us about remaking parts of the story from first 5 chapters), but as I said, this is definitely a VN worth trying out. Deep and emotional character stories will make you choose the girl based on what resonates with you more rather than just the prettiest model.
P.s. Friend instead of brother / sister, I assume it's for Patreon censorship, because no one is that stupid...