As a hardcore pokemon player, I got hella fustrated cus some moves didn't do what they were meant to do, some had wrong descriptions, there is no STAB implementation, hell, fury swipes or attack adds the damage for each attack which is not the way it works, making it almost kill the target even if they're much lower leveled.
With that said, this game shows GREAT promise. I was actually making some animations and scenes of some pokegirls to maybe make into a fan game and seeing this is ironic. It's impressive nonetheless that you implemented the pokemon battle system, boxes, evolution, learn set into ren'py. Now, obvi, there's still a lot to fix, but I feel like this would better be put in rpg maker and using the pokemon premade stuff they have. The progress system with the girls seem lacking, but i feel more is to come to that. So far, animations are good, just sparse.
This is a great foundation, I can't wait to see more. This has great potential to be a good fanmade pokemon game that can be played hardcore or just for the lewds. Sorry for the long comment, just had to express it.