Wow! Charming story, fun mechanics, killer soundtrack. Easily one of the most "Game Boy" non-ROM entries I've seen so far! I appreciate how simple and readable the combat is, and I like how it retains the pure luck aspect while ultimately favoring the player in the early-game against low HP encounters. The non-dog enemies have fun-to-avoid movement patterns that makes dodging them quite satisfying. The cat, both in story and mechanic, is exceedingly charming!
I only had two issues. The first was that is was initially hard to distinguish between impassable vines and flowers. The second was that I accidentally froze the game when trying to exit the graveyard from the north (where the dog blocks the way).
Fantastic! Great work!