Really impressive what you did here! Monster collecting is always fun, and your original character and monsters looked great. I felt like the length was just right for a jam game too.
You clearly put a lot of thought into the attacks and the battle system. Managing interest levels was really cool, and it felt rewarding to finally convince them to join. The map abilities were a cool touch as well. I never did figure out what petting did?
Downside was mostly that combat was a bit too easy. Spamming attack was usually the best and most efficient strategy for enemies, and was effective even against the boss. Felt bad that all these awesome moves were totally unnecessary.
Anyways, super impressive use of the RM engine, and what a demonstration of the inherent power and flexibility of MZ! No plugins can be tough for anyone (also why?!)