I unfortunately didn't really understand the controls, and the game felt slow and unresponsive.
Some sound design or responsive UI would definitely help, because I was spamming the buttons without nothing happening, so I thought it was glitched until I figured that I had to click on the dice first.
The text cooldown is really slow and painful at base speed, and the speed selector only updates on the next dialogue, and sometimes not update at all, which is quite frustrating. Some way to skip the text would be really neat, because it is the antithesis of fun to have to wait 20 seconds when done reading the dialogue.
For the up-down scroll, it is inverted and unintuitive. You should probably follow the conventions to make it logical and intuitive.
Id like to review the actual story and game, but everything around it keeps distracting me, and not in a good way. As dumb as it sounds, I think the first step to making a great Novel / VN game is to have a good UI design, as unnoticeable as possible, so the player can enjoy the story in full.
Anyway, props on submitting to the game jam!