First off, I am very impressed with how much you got into the game. There is a lot of content for a game jam. Also I like that I can just walk up and hit the heal button. When I play Pokemon, I always hate waiting for the lady to put my Pokemon in the heal machine one by one.
On the other side, for the first couple of minutes you are just reading through dialogue and clicking through menus. In this intro sequence, I don't think I learn really much to help me out with the game. The time would have been much more well spent explained systems like the stamina system. I know that is kind of like a Pokemon tradition, but I don't think its necessary to inherit every part of the design from the genre you take inspiration from.
Overall, I think its solid, but I think some considerations need to be made of what you are using and what you aren't based of you experiences with other creature captures games, and what really makes up their core experiences.