Great visual novel experience!! It’s fun to play and also it have a good variety of options The only things than I will improve is to have a little bit more of options so you can have more control on the story, also it’s not necessary than you can choose what characters than are not your protagonist have to say, it’s better than you can choose only what the protagonist do and let the story change by the protagonist decision
For the rest it have a really great story and also I like the achievements system!! Good luck working on the full version!!