There is a softlock if you make too much tea during the first day? Anyways, I couldn't server the door guy any tea on day two since I didn't have enough water...
For some reason the game runs really slow on my PC as well(music stuttering etc). Shame, because even though the first day was... well. Kinda bad in execution(The whole intro gives a completely different vibe from what's going on in the next scene, the dialogue is odd, and... well. The MC is... I dunno, strangely okay with the fact she's all alone. "Granny is dead. Let's open a shop!"), it got actually pretty interesting during the first night.
Interesting idea, if you work on the executing, this could be pretty good :)