Heya koreanois, I'm a huge fan of incremental games and I love your twist with the cauldron recipes in it.
But first things first, the intro is amazing and the character is absolutely relateable. The arstyle is cute although as a pixel artist it hurts me to see the inconsistent pixel sizes a little.
The gameplay loop is fun, I think the ingredient to cauldron animation could be twice as fast.
Towards the end it got a little bit too grindy for my taste, you could've made the phone a little cheaper on the price but I guess the grind is a part of the fun in these kind of games :)
All in all a very good job!