I like your style.

Lines are quite clean(I would say it is perfect for your style). Your characters can be hard to remember if you have a lot of them but maybe if they are beautiful enough and interesting visually(more than side characters) It wouldn't be much problem. Usually in visual novel there can be around 5 main characters. I think it's no problem for you to make them stand out from the others.
If we are saying about emotions. I actually prefer for them to be less nocitable.
I like using just face and subtle movments of hands to create certain feeling. I think it's becouse you can imagine more things and I rather do this than see it actually

With time I actually stop percive face changes intetionally and start just see person acting in my head. A little animation helps me too.
I am suprised that onyx is your work, not a photo.

Environment is pretty
I hope that my feedbak will help you
