So, I'm not a huge fan of visual novels. Usually clicking through dialogue feels really tedious to me and there is often a lot of dialogue that seems unnecessary on top of it that doesn't help either. But I played through all of this and never felt any of those feelings at all, that was fantastic! I think what helps is how much your game is a back-and-forth between the player and the customer, with lots of options to choose. It really made me feel like my actions had meaningful consequences and I was constantly paying attention to every little detail in case it would reveal the best answer. The art is great too with the music really setting a perfect tone in the background. The addition of a returning customer to talk with you between sessions was unexpected but really helps sell the whole setting on top of that, so it really dragged me in and frankly I was a bit sad when it was over because of that.
The only real feedback I would give is that the UI itself looks a bit plain, a border around the dialogue box and a slightly more off-white background might make it a bit better but that's really nit picking and I only came to that by trying to think long and hard about what sort of feedback I could give. Honestly, really fantastic game so thank you for making it! (For the record, I recommended first and did not recommend second)