-viability; i think that having text appear incrementally on screen is a bit tough to please all readers. i know i read really fast so having everything appear kinda slowly does get a little bit boring, but having stuff appear too quickly defeats the purpose. i think it could move a little bit quicker in the end. i also think on itch setting your game resolution to auto full screen when you run it might be a good idea since it doesn't really work well in the resolution you have set. you do have an error message appearing in game though :(
-presentation; yayyyy different colors for different character dialogues! i think it would be a good idea to change the display color of links players have already clicked since the color feels really saturated next to the light green.
-theme; i like having to make moral choices of what to put in this potion i think thats cool. it kinda matches the moody visual theme you've set
-engagement; i love the character voices you've written... they're really fun and i want to keep reading!