This is a great VN. One of the best I've played.
Kathy and Heidi are two of the sexiest characters I've ever seen in a VN.. ESPECAILLY KATHY.
I'm going to focus on some things that I don't like about this game though. Things that I think are hurting it overall... keep in mind that despite these things, it is still a 5 star worthy game and I am always eager for the next chapter..
...the biggest flaw in my opinion is something I consider a flaw in most visual novels: dudes. I do not play this game for the male characters. I play it because it is a fun, sexy story. There is nothing sexy about talking to a dude, especially when chapters are so short and the dude, in this case Moe, takes up such a big chunk of the screen time.
Moe has made me chuckle once or twice. But far more times, he has just made me bored and taken me out of the mood that the game otherwise sets. I do not see the point. At no time when I am playing a sexy game like this am I thinking that I'd like to be talking to a guy character.
...the second biggest flaw in my opinion is probably a less popular one. It's the insistence of shoving the incest thing into full view. I don't really mind it so much when it's part of the background of the story, but I really hate the flashbacks that hit home that this girl we are lusting after was our child and we used to wash out her cuts when she'd scrape her knee or whatever. That type of focus makes things a little too real and creepy for my taste. Likewise, the focus on our deceased wife and how the daughter did not grow up knowing her mother very well and how we dream about having sex with our now dead wife and how the daughter looks like her.. and it's all just too much. I mean, yuck. Luckily this story rarely focuses on those things, but when it does it makes me really glad that the sexual focus is less on the daughter and more on the side characters (or at least is with the choices I've made).
Anyway, that's just my two cents. It's more of a critique on the genre at large than this VN in particular as I really think this one is among the best.
Thank you for taking the time to read my thoughts.
EDIT: **SPOILER FOR CHP 6** I had to take a star away for chapter 6. A complete letdown where nothing at all happens. There basically aren't even any changes of location. 95% of the chapter consists of the characters standing around the diner saying the same thing over and over again. It's absolutely ridiculous.