I actually read this one in its entirety some years back. It's a cheap crappy fetish nukige so don't go in expecting much, but it might be worth a few faps. Oddly enough in a game about milfs and pregnant girls the best girl is the one who is initially
neither of those things.
I read one or two others by the same developer and they're roughly the same sort of thing: lots of incest and pregnancy, and mostly worthless trash except that some of the girls are surprisingly likeable. They also have harem routes, which is nice.
Emiko annoyed me because she basically hijacks the sister's route and turns it into a threesome route. It seems like they ran out of budget and weren't able to finish both the sister and mother+sister routes, so you reach a choice where one option enters the mother+sister route, and the other just gives and almost instant ending with the sister. Incestuous oyakodon is very important so I get why they prioritised that, but it's a shame that the sister barely gets a route.