Some of the interactions between MC and various characters doesn't make sense or have some big gaps. The mysterious girl is playing/flirting at the train with the MC, but once at the town she's treating him like they have never seen each other. The bar scene is very absurd, even if both of them have an inexplicably gut reaction when they're interacting together.
Supposedly, the MC is going to the night club to meet Gina. Then, Rose is there and they start to chat. If you reject her invitation and stay, instead of look for Gina, out of the blue, Lisa's is inviting you to follow her, you do so, but if you're interrupted she gets mad without reason. MC goes back home, but he doesn't think about her childish behavior. Even worst, next time he runs into Lisa, neither of them is asking for an explanation or giving it. It's just normal.
In a porn fest kind of game, I wouldn't even bother with this kind of things, but in games such as this, where the story and dialogues are important, this gap are bothering.