Animations are seamless, the renders are good, and the plot is decent. I wish there was more dialogue choice, like being able to respond differently in more situations.
Girl renders are good, though the younger sister's face looks somewhat unnatural.
The MC's renders, on the other hand, are really not all that fantastic. I'm pretty sure every character we've seen so far has been taller than him, including his younger sister. He also has like 1 expression which he wears for the entire game, which is super vacant and derpy.
Also kinda weird that all the girls in his family have super fine facial features, but this guy has a chunky, flat nose and a thick face.
TL;DR
Looks promising, but dialogue choice is pretty limited, and the MC's appearance needs a serious rework.