The design of the female characters' appearance is unique and more true to life than many other visual novels. Obviously all of the characters are designed to be very attractive, but if these women were real, they would each have something that makes them self conscious even though it shouldn't. Anyone who has dated someone for a while would understand even if its something as small as "I hate my cheekbones". it really helps make the characters feel more realistic.
On the subject of characters, before the end of even the first conversation with Emma, it was clear that this would be a game that has some of the best character writing in an AVN. Its clear that there has been a lot of effort given to making characters feel as real as possible. I'm not even past ch2 and i can say without hesitation that the writing is near the level of Dr Pinkcake or Caribdis (Being a DIK/Acting Lessons and Once in a lifetime/Eternum respectively)
Definitely try to buy it or support it to help support this level of effort and creativity shown by MrSilverLust if you can