A solid foundation for a game with a nice narrative.
So I'm gonna be pretty blunt here. I got totally bored by day 2. My brain was switching off as I ran through the motions of making the potion for the customer but with no variety at all from start to finish it was a bit of a slog to get through it.
The mysterious cult member showing up throughout the game and the final piece of the story at the end was what kept me going because I was interested in seeing what happened.
The character art was nice I liked the design and the pixel art. I especially liked the hooded cult member with the shadowy face. The environment was very basic and flat however. The item sprites and UI were solid though and the shop screen looked great.
The music was simple enough but I liked the music/tone change whenever the cult member showed up. Sometimes it kinda turned dark too and sometimes it didn't, not sure why but it was a nice touch.
Overall the game had me wanting more. You mentioned in the closing statement that you plan to keep developing the game and put it on steam. I'll be really interested to see that, I really like the base mechanics of the potion crafting and shop mechanics I'm excited to see how that develops and what the game turns into, especially with the lingering story beat.