My only major gripe with this game is that the protagonist doesn't speak much at all when I feel he should be. It kind of makes some scenes feel like a one-sided conversation where the girls are rambling to themselves.
I love the animations. The expressions make the characters feel so much more alive, and the h-scenes even hotter. I really hope other Koikatsu-based VN developers take notes, because I want to see more of this.
This issue seems to be persisting in the browser version, but I just found a quick fix: Click the E symbol in the bottom left to advance the dialogue without having to click the speech-bubble.