A small suggestion is playing around with the typography/color both in the game and itch page—it can help elevate your game’s experience to the player in terms of what they should feels. (Also the full screen button seems to not be working for whatever reason?)
yeah if possible, I think you'd have to play around with the "viewport dimensions" option when you're editing the game, and see what works best.
Otherwise, I do like how this feels like a Visual Novel, with character portraits, various dialogue choices, and scene changes. I'd be interested to see if you ever expand upon this format in a later game, as the foundation is very solid right now