Congrats on your first game!
Music was really phenomenal. It blows my mind what AI can achieve these days.
Not sure if this was part of your implementation of the limitation but the lack of a restart button made it difficult to enjoy if you make the wrong choice early on. Due to the way itch works I had to open another browser.
Additionally some expository dialogue where you can't make the wrong choice could help set a mood. Going straight into the letter with it's stylized writing made me wonder if it was the character who was struggling with English or the creator of the game.
Again, welcome to game dev and I hope you stick with it!