Very charming game!
The visuals are outstanding, definitely the best aspect of this game to me. The way the characters react and emote is just really... well, charming. The sound design is also very good, and compliments the art style really well.
While it is fun to talk to the characters the first couple of times, it does get repetitive. It really doesn't help that all the characters have the same questions. I just think in general there's not enough questions. I would even occasionally get the same question twice for the same character. I get that writing a lot of questions and reactions would be hard, but considering they make up the entire gameplay loop, it's kind of important.
But that's basically my entire critique. There's nothing else I really think needs to be improved. That being said, I don't think this would work well as a full game. I think expanding this would be really tricky without changing the core gameplay too much. It's fantastic at what it wants to be, even if that's something you'll only play for 10 minutes or so.