I love this fun little story! It is paced rather well, doesn't go off on any unnecessary tangents, is simple and straightforward in a good way.
I honestly expected more doughnut puns embedded throughout, but we at least got a few!
I also liked the sly little MH reference you hid in there! I love how you handled it too- if you are unfamiliar, you wouldn't think twice about it!
The artwork fit extremely well, though one simple addition I would suggest is to have a custom name font in a balloon/comic font style to more closely match the logo. I could easily imagine this with a complete custom UI if you decide to update the game further, but just that one change would go a long way in unifying the theme.
Also unnecessary, but just musing, I would like to see an epilogue. I didn't want it to end so soon! Maybe even just a reference in a future project or something, because I hope to see more from your team!
Keep up the good work!