This was a very cohesive game. All the aesthetics and dialogue made sense together and fit well together. I appreciated the how the gameplay was explained both in text and with visual cues.
The only part that wasn't clear was exactly how the sincerity bar worked. I saw the countdown, but I still wasn't clear when I was supposed to speak. When I was reciting the text, sometimes the bar would still bounce back and forth, so I had no indication that it registered that I spoke. I did get the bar to turn red and the character banner would show on the screen, but in both scenarios there was a delay from the time I finished speaking to the time anything happened.
So, it may be that I just wasn't "sincere" enough, but I would have loved to have more of a clearer indication that it could indeed "hear" me. Maybe a meter showing the audio waves would be good? Or even have something flash, maybe the words "good" or "great" or whatever text is appropriate, the way the DDR games used to do to indicate if a step was timed correctly.
Lastly, great job to the character voice. It was a nice way to exemplify what the game was looking for, if anyone didn't know.