The music for this game is very well done. Slow, easygoing, and quite fitting for the atmosphere of a coffee shop.
The art is also nice and there are a few funny visual gags around the shop. (It seems our main character may have two left hands judging from the intro sequence. Perhaps this is another reason for being jealous of Jerry.)
On the gameplay side things are quite confusing (with a lot of text that's hard to read in a small window to play the game in). The brewing mechanic has red and orange indicators on the bar that fills up when you press 'Q' but for the life of me I haven't been able to figure out what this is for (no other buttons seem to stop it; I was under the impression I was trying to stop the brew on one of those colors). I'm told to click and hold after brewing to fill the cup but it seems I can do this with 'R' as well (I only found this out through experimenting). Additionally, it seems I can tap 'R' or just click to serve a minimally filled coffee with no penalty.
All of the mechanics I encountered seemed to boil down to just pressing or holding a key. For me this was not engaging. I can see the vision behind it, but I think there should be more elements added to spice the gameplay up (i.e. timing mechanics, turn it into a slower-paced Guitar (Coffee!) Hero, allow multi-tasking so I can brew one coffee somewhere and another elsewhere while waiting on one, etc.).
At night I was told to hover my cursor over some icons while pressing the "ZXCV" buttons (If these two modes are separate they should both use "QWER"). I tried to press the corresponding buttons, but nothing seemed to happen or progress. I tried to get to the ritual casting part again going through the game another time, but ended up at a screen of the coffee place at night where none of my controls worked anymore.
While there are is a lot wrong with the gameplay of this game, I do appreciate the effort. There was a vision here, and while not fully realized I don't think it's something to give up on. Keep up the work and I hope you can either turn this into a better game or use what you've learned here for future endeavors! Making video games is a difficult thing, so it's still really cool that you were able to make this (especially being given only two weeks)!