Nice graphic...but still much to improve.
1. No facial expressions
2. No eye contact until day 28
3. Mouth won't open
4. Sperm let out in lightspeed
5. Template faces of NPCs(that you may notice in other AVN)
You are free to think what you like, but some of these are intentional decisions and some others are incorrect.
1. The facial expressions are more natural and subtle than other games. The dev chose to not use exaggerated expressions.
2. Day 2 Lucy talks in the kitchen and upstairs, looking at the MC. If that isnt good enough, day 3 on the train we sit next to her and she looks directly at us.
3. This is another choice by the dev. He doesn't like random mouthflaps, so he decided to not make renders of characters mid-sentence with an open mouth.
4. Generally, the transition from a clean render to a messy render is done with a white flash. This is by no means the only game like this to use this technique. If you mean animations in the latest update, those appear to be normal speed.
5. There are only so many modifiers to work with in the modeling program, and fewer still if one doesn't want abominations. Assets and models can be somewhat limited.