Nice game! I love the visual a lot! art was beautiful! :D
I love how the game is focus on storytelling and depth with each character presented in the game. Then, combined with the art style and how well done the art is, really help me to get into the atmosphere and emotion of each character.
One thing I noticed was the lack of clarity of what to do in the game, I know the premise of the game is to not worry about mixing and creating drinks, but I still worry that I do something wrong, and I was unsuccessful to keep the last character's mood from falling down. But I tried it for the second time and finished the game the way I wanted.
And maybe you could add more minigames into it, like slicing lemons, or the usual bartender activity while their mixing the drink for customer! It'd probably be a lot more engaging for the player!
Otherwise, the game is beautiful! It has a lot of potential! :D